perspicuity_n and_o opacity_n art_n 2._o the_o true_a notion_n of_o a_o perspicuum_fw-la and_o opaâ—um_fw-la art_n 3._o that_o every_o concretion_n be_v so_o much_o the_o more_o diaphanous_a by_o how_o much_o the_o more_o &_o more_o ample_a inane_fw-la space_n be_v intercept_v among_o its_o particle_n caeteris_fw-la paâ—ibus_fw-la art_n 4._o why_o glass_n though_o much_o more_o dense_n be_v yet_o much_o more_o diaphanous_a than_o paper_n art_n 5._o why_o the_o diaphanity_n of_o glass_n be_v gradual_o diminish_v according_a to_o the_o various_a degree_n of_o its_o crassitude_n art_n 6._o a_o apodictical_a confutation_n of_o that_o popular_a error_n that_o glass_n be_v total_o or_o in_o every_o particle_n diaphanous_a art_n 1._o the_o contexture_n of_o this_o chapter_n with_o the_o praecedent_n art_n 2._o that_o the_o magnitude_n of_o concretion_n arise_v from_o the_o magnitude_n of_o their_o material_a principle_n art_n 3._o the_o present_a intention_n of_o the_o term_n magnitude_n art_n 4._o that_o the_o quantity_n of_o a_o thing_n be_v mere_o the_o matter_n of_o it_o art_n 5._o the_o quantity_n of_o a_o thing_n neither_o augment_v by_o its_o rarefaction_n noâ—_n diminish_v by_o itâ—_n condensation_n contrary_a to_o the_o aristoâ—eleans_n who_o distinguish_v the_o quantity_n of_o a_o body_n frâ—m_n itâ—_n substance_n art_n 6._o the_o reason_n of_o quantity_n explicable_a also_o mere_o from_o the_o notion_n of_o place_n art_n 7._o the_o existence_n of_o a_o body_n without_o real_a exâ—ension_n &_o of_o exâ—â—â—sion_n without_o a_o bâ—dy_n 〈…〉_z to_o nature_n yet_o 〈◊〉_d to_o god_n art_n 11_o aristotle_n definition_n of_o a_o continuum_fw-la in_o what_o respect_n true_a and_o whaâ—_n false_a art_n â—2_n figure_n physical_o consider_v nothing_o but_o the_o superficies_n or_o terminant_fw-la extreâ—â—_n of_o a_o body_n art_n 1._o the_o continuity_n of_o this_o to_o the_o first_o section_n art_n 2._o 〈…〉_z art_n 3._o a_o considerable_a exception_n of_o the_o chemist_n â—_o viz._n that_o some_o body_n be_v dissolve_v in_o liâ—uorâ—_n of_o 〈◊〉_d particle_n which_o 〈…〉_z art_n 4._o why_o oil_n dissociate_n the_o part_n of_o some_o body_n which_o remain_v inviolate_a in_o spirit_n of_o wine_n and_o why_o lightning_n be_v more_o penetrative_a than_o fire_n art_n 5._o smoothness_n and_o asperity_n in_o concretion_n the_o conâ—equents_v of_o figure_n in_o hâ—â—r_n material_a principle_n art_n 1._o the_o motive_n virtue_n of_o all_o concretion_n derive_v from_o the_o essential_a mobility_n oâ—_n atom_n art_n 2._o 〈…〉_z partâ—_n art_n 5._o what_o the_o active_a faculty_n of_o a_o thing_n be_v art_n 6._o that_o in_o nature_n every_o faculty_n be_v active_a none_o passive_a art_n 7._o a_o peripatetic_a contradiction_n assume_v the_o matter_n of_o all_o body_n to_o be_v devoid_a of_o all_o activity_n and_o yet_o desume_v some_o faculty_n â_fw-la tota_fw-la substantia_fw-la art_n 8._o that_o the_o faculty_n of_o animal_n the_o ratiocination_n of_o man_n only_o except_v be_v identical_a with_o their_o spirit_n art_n 9_o the_o reason_n of_o the_o coexistence_n of_o various_a faculty_n in_o one_o and_o the_o same_o concretion_n art_n 10._o habit_n define_v art_n 11._o that_o the_o reason_n of_o all_o habit_n in_o animal_n consist_v principal_o in_o the_o conformity_n and_o flâ—xibility_n of_o the_o organ_n which_o the_o respective_a faculty_n make_v use_v of_o for_o the_o performance_n of_o its_o proper_a action_n art_n 12._o habit_n acquirable_a by_o bruit_n and_o common_a not_o only_o to_o vegetable_n but_o also_o to_o some_o mineral_n art_n 1._o gravity_n as_o to_o â—â—s_o essence_n oâ—_n formal_a reason_n very_o obscure_a art_n 2._o the_o opinion_n of_o epicurus_n good_a as_o to_o the_o cause_n of_o comparative_a insufficient_a as_o to_o the_o cause_n of_o absolute_a gravity_n art_n 3._o aristotle_n opinion_n of_o gravity_n recite_v art_n 4._o copernicus_n theory_n of_o gravity_n insatisfactory_a and_o wherein_o art_n 5._o the_o determination_n of_o kepler_n gassendus_fw-la etc._n etc._n that_o gravity_n be_v cause_v mere_o by_o the_o attraction_n of_o the_o earth_n espouse_v by_o the_o author_n art_n 6._o the_o extâ—rnal_n principle_n of_o the_o perpendicular_a descent_n of_o a_o stone_n project_v up_o in_o the_o aer_fw-la must_v be_v either_o depellâ—nt_n or_o attrahent_v art_n 7._o that_o the_o resistance_n of_o the_o superior_a aer_fw-la be_v the_o only_a cause_n which_o gradual_o refract_v and_o in_o fine_a whole_o overcome_v the_o impress_v force_n whereby_o a_o stone_n project_v be_v elevate_v upward_o art_n 8._o thaâ—_n the_o aer_fw-la distract_v by_o a_o stone_n violent_o ascend_v have_v as_o well_o a_o depulsive_a as_o a_o resistent_fw-la faculty_n arise_v immediate_o from_o its_o elaterical_a or_o restorative_n motion_n art_n 9_o that_o nevertheless_o when_o 〈…〉_z on_o high_a in_o the_o 〈…〉_z no_o causâ—_n can_v 〈◊〉_d downwâ—â—â—_n motion_n 〈…〉_z art_n 10._o argument_n that_o 〈◊〉_d terraqueous_a glâ—be_n be_v endow_v with_o a_o certain_a attractive_a faculty_n in_o order_n to_o the_o detention_n and_o retraction_n of_o all_o its_o part_n art_n 11._o what_o be_v the_o part_n of_o the_o terrestrial_a globe_n art_n 12._o a_o second_o argument_n that_o the_o earth_n be_v magnetical_a art_n 13._o a_o parallelisme_n betwixt_o the_o attraction_n of_o iron_n by_o a_o loadstone_n aâ—d_v the_o attraction_n of_o terrene_a body_n by_o the_o earth_n art_n 14._o that_o as_o the_o sphere_n oâ—_n the_o lodestone_n allective_a virtue_n be_v limit_v so_o be_v that_o of_o the_o earth_n magnetism_n art_n 15._o a_o objection_n of_o the_o disproportion_n between_o the_o great_a bulk_n of_o a_o large_a 〈◊〉_d and_o the_o exâ—â—â—â—y_n of_o the_o suppose_a magnetic_a ray_n of_o the_o earth_n solve_v by_o three_o weighty_a reason_n art_n 16._o the_o reason_n of_o the_o aequivelocity_n of_o body_n of_o different_a weight_n in_o their_o perpendicular_a descent_n with_o sundry_a unquestionable_a authority_n to_o confirm_v the_o hoti_n thereof_o art_n 18._o that_o the_o centre_n of_o the_o universe_n be_v not_o the_o low_a part_n â—â—â—reof_o nor_o the_o centre_n of_o the_o earth_n the_o centre_n of_o the_o world_n art_n 19_o a_o four_o argument_n that_o gravity_n be_v only_a attraction_n art_n 20._o why_o a_o great_a gravity_n or_o strong_a attractive_a force_n be_v impress_v â—pon_o a_o piece_n of_o iron_n by_o a_o loadstone_n than_o by_o the_o earth_n art_n 21_o a_o â—ifth_o argument_n almost_o apâ—â—icticaâ—â—_n that_o gravity_n 〈◊〉_d the_o effect_n 〈◊〉_d the_o earth_n â—â—â—â—raction_n art_n 1._o sword_n nothing_o 〈…〉_z art_n 1._o the_o connection_n of_o this_o to_o the_o immediate_o precedent_a chapter_n art_n 2._o why_o the_o author_n deduce_v the_o 4_o first_o quality_n not_o from_o the_o 4_o vulgar_a element_n but_o from_o the._n 3_o propriety_n of_o atom_n art_n 3._o the_o nature_n of_o heat_n be_v to_o be_v conceive_v from_o its_o general_n effect_n viz._n the_o penetration_n discussion_n and_o dissolution_n of_o body_n concrete_a art_n 4._o heat_v define_v as_o no_o immaterial_a but_o a_o 〈…〉_z art_n 7._o that_o the_o atom_n of_o heat_n be_v capable_a of_o expedition_n or_o deliverance_n from_o concretion_n two_o way_n viz._n by_o euâ—cation_n and_o motion_n art_n 8._o a_o vnâ—raâ—us_a matter_n the_o chief_a seminary_n of_o the_o atom_n of_o heat_n and_o why_o aâ—â—_n â—_o among_o unctuous_a concreâ—â—ons_n whâ—_n some_o arâ—_n more_o â—asily_o inflammable_a than_o other_o art_n 11._o problem_n 1._o why_o the_o â—ottoâ—_n of_o a_o cauldron_n wherein_o water_n be_v boil_a may_v be_v touch_v by_o the_o hand_n of_o a_o man_n without_o burn_v 〈…〉_z art_n 12._o problem_n 2._o why_o lime_n become_v ardent_a upon_o the_o affusion_n of_o water_n â—ol_n art_n 13._o problem_n 3._o why_o the_o heat_n of_o lime_n burn_v be_v more_o vehement_a than_o the_o heat_n of_o any_o flame_n whatever_o sol._n art_n 14._o problem_n 4_o why_o boil_a oil_n scald_v more_o vehement_o than_o boil_a water_n sol._n art_n 15._o problem_n 5_o why_o metal_n melt_v or_o make_v red_a hot_a burn_v more_o violent_a than_o the_o fire_n that_o melt_v or_o heat_v they_o sol._n art_n 16._o consectary_n 2._o that_o as_o the_o degree_n of_o heat_n so_o those_o of_o fire_n be_v innumerable_o uâ—rious_a art_n 17._o that_o to_o the_o calefaction_n combustion_n or_o inflammation_n of_o a_o body_n by_o fire_n be_v require_v a_o certain_a space_n of_o time_n and_o that_o the_o space_n be_v great_a or_o less_o according_a to_o the_o paucity_n or_o abundance_n of_o the_o igneous_a atom_n invade_v the_o body_n object_v and_o more_o or_o less_o of_o aptitude_n in_o the_o contexture_n thereof_o to_o admit_v they_o art_n 18._o fleame_z more_o or_o less_o durable_a for_o various_a respect_n art_n 19_o consectary_n 3._o that_o the_o immediate_a and_o genuine_a effect_n of_o heat_n be_v the_o disgregation_n of_o all_o body_n as_o well_o homogeneous_a as_o heterogenous_a and_o that_o the_o congregation_n of_o homogeneous_a nature_n be_v only_o a_o accidentalâ—ffâ—ct_n â—ffâ—ct_z of_o hâ—aâ—_n contrary_a
disseminate_a inanity_n neither_o important_a nor_o competent_a ibid._n 9_o the_o hypothesis_n of_o a_o câ—rtâ—in_n aethereal_a substance_n to_o replenish_v thâ—_n port_n â—f_a boâ—ies_n in_o rarifaction_n demonstrate_v insufficient_a to_o solve_v the_o difficulty_n or_o demolish_v the_o epicurean_a thesis_n of_o small_a vacuity_n 254_o 10_o the_o facility_n of_o understand_v the_o reason_n and_o manner_n of_o 〈◊〉_d and_o condensation_n from_o the_o concâ—ssion_n of_o sâ—all_a vacuity_n illustrate_v by_o a_o 〈…〉_z 255_o 11_o paradox_n thaâ—_n the_o matter_n of_o a_o body_n when_o 〈…〉_z no_o more_o of_o true_a place_n 〈…〉_z and_o the_o conciliation_n thereof_o to_o the_o 〈◊〉_d definition_n of_o a_o rare_a and_o of_o a_o denâ—e_a boâ—y_n 2â—6_n 12_o problem_n 〈…〉_z be_v capable_a of_o condensation_n to_o so_o hang_v 〈◊〉_d as_o it_o be_v of_o rariâ—faction_n and_o the_o 〈◊〉_d â—olution_n thereof_o ibid._n sect_n iii_o art_fw-la c._n 1_o the_o opportunity_n of_o the_o present_a speculation_n concern_v the_o â—_z of_o perspicuity_n and_o opacity_n â—â—8_n 2_o the_o true_a notion_n of_o a_o perâ—picuum_fw-la and_o opacum_fw-la ibid._n 3_o that_o every_o concretion_n be_v so_o much_o the_o more_o 〈◊〉_d by_o how_o much_o thâ—_n more_o and_o more_o ample_a inane_fw-la space_n 〈◊〉_d intercept_v among_o its_o particle_n caeteus_fw-la paâ—â—bus_fw-la ibid._n 4_o why_o glass_n though_o much_o more_o dense_n be_v yet_o much_o more_o diaphanous_a than_o paper_n 259_o 5_o why_o â—he_v diaphanity_n of_o glass_n be_v gradual_o diminish_v according_a to_o the_o various_a degree_n of_o its_o crassitude_n ibid._n 6_o a_o apodictical_a confutation_n of_o that_o popular_a error_n that_o glass_n be_v total_o or_o in_o every_o particle_n diaphanous_a 260_o chap._n x._o of_o magnitude_n figure_n and_o their_o consequent_n subtlety_n hebetude_n smoothness_n asperity_n 261_o sect_n i._o artic_a 1_o the_o contexture_n of_o this_o chapter_n with_o the_o praecedent_n ibid._n 2_o that_o the_o magnitude_n of_o concretion_n arise_v from_o the_o magnitude_n of_o their_o material_a principle_n ibid._n 3_o the_o present_a intention_n of_o the_o term_n magnitude_n ibid._n 4_o that_o the_o quantity_n of_o a_o thing_n be_v mere_o the_o matter_n of_o it_o 2â—2_n 5_o the_o quantity_n of_o a_o thing_n neither_o augment_v by_o its_o rarefaction_n nor_o diminish_v by_o its_o condensation_n contrary_a to_o the_o aristotelian_o who_o distinguish_v the_o quantity_n of_o a_o body_n from_o its_o substance_n ibid._n 6_o the_o reason_n of_o quantity_n explicable_a also_o mere_o from_o the_o notion_n of_o place_n 263_o 7_o the_o existence_n of_o a_o body_n without_o real_a extension_n and_o of_o extension_n without_o a_o body_n though_o impossible_a to_o nature_n yet_o easy_a to_o god_n ibid._n 8_o corollary_n that_o the_o primary_n cause_n why_o nature_n admit_v no_o penetration_n of_o dimension_n be_v rather_o the_o solidity_n than_o the_o extension_n of_o a_o body_n 264_o 9_o the_o reason_n of_o quantity_n continue_v and_o discrete_a or_o magnitude_n and_o multitude_n ibid._n 10_o that_o no_o body_n be_v perfect_o continue_v beside_o a_o atom_n ibid._n 11_o aristotle_n definition_n of_o a_o continuum_fw-la in_o what_o respect_n true_a and_o what_o false_a 265_o 12_o figure_n physical_o consider_v nothing_o but_o the_o superficies_n or_o terminant_fw-la extreme_n of_o a_o body_n ibid._n sect_n ii_o artic_a 1_o the_o continuity_n of_o this_o to_o the_o first_o section_n 266_o 2_o subtlety_n and_o hebetude_n how_o the_o consequent_n of_o magnitude_n ibid._n 3_o a_o considerable_a exception_n of_o the_o chymest_n viz._n that_o some_o body_n be_v dissolve_v in_o liquor_n of_o grosser_n particle_n which_o yet_o conserve_v their_o continuity_n in_o liquor_n of_o most_o subtle_a and_o corrosive_a particle_n prevent_v ibid._n 4_o why_o oil_n dissociate_n the_o part_n of_o some_o body_n which_o remain_v inviolate_a in_o spirit_n of_o wine_n and_o why_o lightning_n be_v more_o penetrative_a than_o fire_n 267_o 5_o smoothness_n and_o asperity_n in_o concretion_n the_o consequent_n of_o figure_n in_o their_o material_a principle_n ibid._n chap._n xi_o of_o the_o motive_n virtue_n habit_n gravity_n and_o levity_n of_o concretion_n â—69_n sect_n i._o artic_a 1_o the_o motive_n virtue_n of_o all_o concretion_n derive_v from_o the_o essential_a mobility_n of_o atom_n ibid._n 2_o why_o the_o motive_n virtue_n of_o concretion_n do_v reside_v principal_o in_o their_o spiritual_a part_n 270_o 3_o that_o the_o deviation_n of_o concretion_n from_o motion_n direct_v and_o their_o tardity_n in_o motion_n arise_v from_o the_o deflection_n and_o â—epercussions_n of_o atom_n compose_v they_o ibid._n 4_o why_o the_o motion_n of_o all_o concretion_n necessary_o praessâ—pâ—ssâ—th_v something_o that_o remain_v unmoved_a or_o that_o in_o respect_n of_o its_o slow_a motion_n be_v equivalent_a â—o_o a_o thing_n vnmoved_a ibid._n 5_o what_o 〈◊〉_d active_a faculty_n of_o a_o thing_n be_v 271_o 6_o that_o in_o nature_n every_o faculty_n be_v active_a none_o passive_a ibid._n 7_o a_o peripatetic_a contradiction_n assume_v the_o matter_n of_o alâ—_n body_n to_o be_v devoid_a of_o all_o activity_n and_o yet_o dâ—suming_v some_o faculty_n à _fw-la tota_fw-la substantia_fw-la 272_o 8_o that_o the_o faculty_n of_o animal_n the_o ratiocination_n of_o man_n only_o except_v be_v identical_a with_o their_o spirit_n ibid._n 9_o the_o reason_n of_o the_o coexistence_n of_o various_a faculty_n in_o one_o and_o the_o same_o concretion_n ibid._n 10_o habit_n defiâ—ed_v 273_o 11_o that_o the_o reason_n of_o all_o habit_n in_o animal_n consist_v principal_o in_o the_o conformity_n and_o flexibility_n of_o the_o organ_n which_o the_o respective_a faculty_n make_v use_v of_o for_o the_o performance_n of_o its_o proper_a action_n ibid._n 12_o habit_n acquirable_a by_o bruit_n and_o common_a not_o only_o to_o vegetable_n but_o also_o to_o some_o mineral_n 2â—4_n sect_n ii_o artic_a 1_o gravity_n as_o to_o its_o essence_n or_o formal_a reason_n very_o obscure_a 275_o 2_o the_o opinion_n of_o epicurus_n good_a as_o to_o the_o cause_n of_o comparative_a insufficient_a as_o to_o the_o â—ause_n of_o absolute_a gravity_n ibid._n 3_o aristotle_n opinion_n of_o gravity_n recite_v ibid._n 4_o copernicus_n theory_n of_o gravity_n insatisfactory_a and_o wherein_o 276_o 5_o the_o determination_n of_o kepler_n gassendus_fw-la etc._n etc._n that_o gravity_n be_v cause_v meâ—rly_o by_o the_o attraction_n of_o the_o earth_n espouse_v by_o the_o author_n 277_o 6_o the_o external_n principle_n of_o the_o perpendicular_a descent_n of_o a_o stone_n project_v up_o in_o the_o aer_fw-la must_v be_v either_o depellent_fw-fr or_o attrahent_fw-la ibid._n 7_o that_o the_o resistance_n of_o the_o superior_a aer_fw-la be_v the_o only_a cause_n which_o gradual_o refract_v and_o in_o fine_a whole_o overcome_v the_o impress_v force_n whereby_o a_o stone_n project_v be_v elevate_v upward_o ibid._n 8_o that_o the_o aer_fw-la distract_v by_o a_o stone_n violent_o ascend_v have_v as_o well_o a_o depulsive_a as_o a_o resistent_fw-la faculty_n arise_v immediate_o from_o its_o elaterical_a or_o restorative_n motion_n 279_o 9_o that_o nevertheless_o when_o a_o stone_n project_v on_o high_a in_o the_o aer_fw-la be_v at_o the_o high_a point_n of_o its_o mountee_n no_o cauâ—e_n can_v begâ—â—_n its_o downward_o motion_n but_o the_o attractive_a virtue_n of_o the_o earth_n 280_o 10_o argument_n that_o the_o terraqueous_a globe_n be_v endow_v with_o a_o certain_a attractive_a faculty_n in_o order_n to_o the_o detention_n and_o retraction_n of_o aâ—l_a its_o part_n 2â—1_n 11_o what_o be_v the_o part_n of_o the_o terrestrialglobe_n 282_o 12_o a_o second_o argument_n that_o the_o earth_n be_v magnetical_a ibid._n 13_o a_o parallelism_n betwixt_o the_o attraction_n of_o iron_n by_o a_o loadstone_n and_o the_o attraction_n of_o terrene_a body_n by_o the_o earth_n 283_o 14_o that_o as_o the_o sphere_n of_o the_o lodestone_n allective_a virtue_n be_v limit_v so_o be_v that_o of_o the_o earth_n magnetism_n ibid._n 15_o a_o objection_n of_o the_o disproportion_n between_o the_o great_a bulk_n of_o a_o large_a stone_n and_o the_o exility_n of_o the_o suppose_a magnetic_a ray_n of_o the_o earth_n solve_v by_o three_o weighty_a reason_n 284_o 16_o the_o reason_n of_o the_o aequivelocity_n of_o body_n oâ—_n different_a weight_n in_o their_o perpendicular_a descent_n with_o sundry_a unquestionable_a authority_n to_o confirm_v the_o hoti_n thereof_o â—85_n 17_o that_o the_o whole_a terrestrial_a globe_n be_v devoid_a of_o gravity_n and_o that_o in_o the_o universe_n be_v no_o high_a nor_o low_a place_n 2â—6_n 18_o that_o the_o centre_n of_o the_o universe_n be_v not_o the_o low_a part_n thereof_o nor_o the_o centre_n of_o the_o earth_n the_o centre_n of_o the_o world_n 287_o 19_o a_o four_o argument_n that_o gravity_n be_v only_a attraction_n 289_o 20_o why_o a_o great_a gravity_n or_o strong_a attractive_a force_n be_v impress_v upon_o a_o piece_n of_o iron_n by_o a_o loadstone_n than_o by_o the_o earth_n ibid._n 21_o a_o five_o argument_n
how_o much_o near_o they_o approach_v the_o earth_n unless_o it_o can_v be_v demonstrate_v that_o this_o increase_n of_o velocity_n in_o each_o degree_n of_o descent_n arise_v only_o from_o the_o increase_n of_o appetency_n of_o union_n with_o the_o whole_a which_o neither_o copernicus_n himself_o nor_o any_o other_o for_o he_o have_v yet_o dare_v to_o assent_v as_o in_o consideration_n of_o many_o other_o defect_n and_o some_o absurdity_n which_o that_o wonder_n of_o the_o mathematics_n ricciolus_n have_v demonstrative_o convict_v it_o of_o in_o almegisti_fw-la novi_fw-la parte_fw-la posteriori_fw-la lib._n 9_o sect_n 4._o cap._n 16._o de_fw-la systemate_fw-la terrae_fw-la motae_fw-la who_o have_v he_o but_o as_o solid_o determine_v all_o the_o difficulty_n concern_v the_o immediate_a cause_n of_o this_o affection_n in_o body_n call_v gravity_n as_o he_o have_v refute_v the_o copernican_n thesis_n of_o a_o innate_a appetency_n in_o the_o part_n of_o the_o earth_n to_o reunite_v themselves_o to_o the_o whole_a doubtless_o he_o have_v much_o increase_v the_o obligation_n and_o gratitude_n of_o his_o reader_n but_o make_v it_o his_o principal_a design_n to_o propugn_v the_o physiology_n and_o astronomy_n of_o the_o ancient_n especial_o such_o tenant_n as_o be_v admit_v by_o the_o school_n and_o allow_v of_o by_o the_o doctor_n of_o rome_n as_o most_o concordant_a to_o the_o literal_a sense_n of_o sacred_a writ_n he_o wave_v that_o province_n seem_v to_o adhaere_fw-la to_o the_o common_a doctrine_n of_o the_o stagirite_n former_o recite_v and_o only_o occasional_o to_o defend_v it_o last_o there_o be_v other_o among_o who_o kepler_n and_o gassendus_fw-la deserve_v the_o rich_a minerval_n who_o neither_o admit_v with_o aristotle_n author_n that_o gravity_n be_v any_o quality_n essential_o inhaerent_a in_o concretion_n nor_o with_o copernicus_n that_o it_o be_v a_o appetency_n of_o union_n implant_v original_o in_o the_o part_n of_o the_o earth_n by_o virtue_n whereof_o they_o carry_v themselves_o towards_o the_o middle_a of_o the_o terrestrial_a globe_n define_v it_o to_o be_v a_o impress_v motion_n cause_v immediate_o by_o a_o certain_a magnetic_a attraction_n of_o the_o earth_n and_o this_o opinion_n seem_v to_o carry_v the_o great_a weight_n of_o reason_n as_o may_v soon_o be_v manifest_a to_o any_o competent_a and_o equitable_a judgement_n that_o shall_v exact_o perpend_v the_o solid_a argument_n allege_v by_o its_o assertor_n which_o for_o great_a decorum_n we_o shall_v now_o twist_v together_o into_o one_o continue_a thread_n that_o so_o our_o reader_n may_v wind_v they_o into_o one_o bottom_n and_o then_o put_v they_o together_o into_o the_o balance_n insomuch_o as_o frequent_v and_o most_o accurate_a observation_n demonstrate_v attrahent_v that_o the_o motion_n of_o a_o body_n downward_o do_v increase_v in_o the_o same_o proportion_n of_o velocity_n that_o the_o motion_n of_o the_o same_o body_n violent_o project_v upward_o do_v decrease_v therefore_o be_v it_o reasonable_a nay_o necessary_a for_o we_o to_o conceive_v that_o there_o be_v two_o distinct_a external_n principle_n which_o mutual_o contend_v about_o the_o same_o subject_n and_o execute_v their_o contrary_a force_n upon_o the_o same_o movable_a now_o of_o these_o two_o antagonistical_a force_n the_o one_o be_v evident_a the_o other_o obscure_a and_o the_o argument_n of_o our_o instant_a disquisition_n manifest_a it_o be_v when_o a_o stone_n be_v throw_v upward_o from_o the_o surface_n of_o the_o earth_n into_o the_o aer_fw-la that_o the_o external_n principle_n of_o its_o motion_n upward_o be_v the_o hand_n of_o he_o who_o project_v it_o but_o somewhat_o obscure_a what_o be_v the_o external_n principle_n of_o its_o motion_n downward_o when_o it_o again_o return_v to_o the_o earth_n nevertheless_o this_o obscurity_n do_v not_o imply_v a_o nullity_n i._n e._n it_o be_v high_a temerity_n to_o conclude_v that_o there_o be_v no_o external_n cause_n of_o the_o stone_n descent_n because_o that_o external_n cause_n be_v not_o equal_o manifest_v with_o that_o of_o its_o ascent_n unless_o any_o dare_v to_o affirm_v that_o because_o he_o can_v perceive_v when_o iron_n be_v attract_v to_o a_o loadstone_n no_o external_a cause_n of_o that_o attraction_n therefore_o there_o can_v be_v none_o at_o all_o many_o indeed_o be_v the_o way_n by_o which_o a_o external_n cause_n may_v move_v a_o body_n and_o yet_o they_o all_o fall_n under_o the_o comprehension_n of_o only_a two_o cardinal_n way_n and_o those_o be_v impulsion_n and_o attraction_n this_o praeconsider_v it_o follow_v upward_o that_o we_o cast_v about_o to_o find_v some_o cause_n or_o impellent_fw-fr or_o attrahent_fw-la or_o rather_o two_o cause_n one_o impellent_fw-fr the_o other_o attrahent_fw-la operate_n together_o to_o which_o we_o may_v impute_v the_o perpendicular_a motion_n of_o body_n descend_v the_o impellent_fw-fr cause_n if_o any_o such_o there_o be_v of_o the_o perpendicular_a motion_n of_o a_o stone_n descend_v can_v be_v no_o other_o but_o the_o aer_fw-la from_o above_o incumbent_a upon_o and_o press_v it_o downward_o because_o of_o any_o other_o external_n cause_n of_o that_o effect_n no_o argument_n can_v be_v give_v for_o shall_v you_o suppose_v a_o sphere_n of_o fire_n or_o some_o other_o or_o some_o other_o aethereal_a substance_n to_o be_v immediate_o above_o the_o convex_a extreme_a of_o the_o sphere_n of_o aer_fw-la which_o close_o and_o with_o some_o kind_n of_o pressure_n environ_v the_o aer_fw-la may_v compel_v all_o its_o part_n to_o flow_v together_o towards_o the_o terraqueous_a globe_n yet_o can_v that_o super-aereal_a sphere_n bound_v and_o urge_v by_o the_o circumvolution_n of_o the_o celestial_a orb_n do_v no_o more_o than_o cause_n the_o aer_fw-la be_v itself_o press_v downward_o to_o bear_v down_o upon_o the_o stone_n and_o so_o depress_v it_o and_o so_o the_o aer_fw-la must_v still_o be_v at_o least_o the_o proxime_fw-la cause_n impel_v the_o stone_n downward_o moreover_o that_o the_o aer_fw-la alone_z may_v be_v the_o impellent_fw-fr cause_n of_o the_o stone_n perpendicular_a decidence_n from_o on_o high_a even_o aristotle_n himself_o seem_v to_o concede_fw-la insomuch_o as_o he_o be_v positive_a in_o his_o judgement_n that_o when_o a_o heavy_a body_n project_v upward_o be_v abandon_v by_o its_o motor_n it_o be_v afterward_o move_v only_o by_o the_o aer_fw-la which_o be_v move_v by_o the_o projicient_fw-la move_v the_o next_o contermâ—â—ous_fw-fr aer_fw-la by_o which_o again_o the_o next_o neighbour_a aer_fw-la be_v likewise_o move_v anâ—_n so_o successive_o forward_a until_o the_o force_n of_o the_o impress_v motion_n gradual_o decay_v the_o whole_a communicate_v motion_n cease_v and_o a_o quiet_a succeed_v but_o betause_n aristo_n le_fw-fr can_v not_o tell_v what_o cause_n that_o be_v which_o in_o every_o degree_n of_o the_o stone_n ascent_n oppose_v at_o length_n whoâ—â—â—_n overcome_v the_o impress_v force_n unless_o it_o shall_v be_v the_o occurrent_a superior_a aer_fw-la which_o continual_o resist_v the_o inferior_a aer_fw-la whereby_o the_o project_v stone_n be_v promote_v in_o its_o ascent_n may_v not_o we_o safe_o enough_o conclude_v that_o the_o aer_fw-la from_o above_o incumbent_a upon_o the_o project_v stone_n may_v by_o the_o same_o force_n depress_v it_o downward_o wherewith_o it_o first_o resist_v the_o motion_n of_o it_o upward_o doubtless_o what_o forceâ—_n soever_o the_o hand_n of_o a_o man_n who_o project_n a_o stone_n upward_o into_o the_o aer_fw-la do_v impress_n upon_o it_o and_o the_o contiguous_a aer_fw-la yet_o still_o be_v 〈◊〉_d the_o superior_a aer_fw-la that_o both_o continual_o resist_v the_o tendency_n 〈◊〉_d the_o stone_n upward_o and_o at_o its_o several_a degree_n of_o ascent_n reâ—racteth_v 〈◊〉_d force_n thereupon_o impress_v by_o the_o hand_n of_o the_o projicient_fw-la untâ—â—â—_n have_v total_o overmaster_v the_o same_o it_o so_o increase_v its_o conquâ—â—â—g_n depellent_fw-fr force_n as_o that_o in_o the_o last_o degree_n of_o the_o stone_n dependant_a motion_n the_o depressive_a force_n of_o the_o aer_fw-la be_v become_v as_o great_a as_o be_v the_o elevate_a force_n of_o the_o hand_n in_o the_o begin_n of_o 〈◊〉_d ascendent_n motion_n suppose_v we_o that_o a_o diver_n shall_v from_o the_o bottom_n of_o the_o sea_n throw_v a_o stone_n direct_o upward_o with_o the_o same_o â—â—â—ce_n as_o from_o the_o surface_n of_o the_o earth_n up_o into_o the_o aer_fw-la and_o then_o â—â—mand_v why_o the_o stone_n do_v not_o ascend_v to_o the_o same_o height_n in_o the_o water_n as_o in_o the_o aer_fw-la be_v it_o not_o think_v you_o because_o the_o 〈◊〉_d do_v more_o resist_v and_o refract_v the_o impress_v force_n and_o so_o sooâ—â—â—_n overcome_v it_o and_o then_o begin_v to_o impress_v its_o own_o con-contrary_a depress_v force_n thereupon_o never_o discontinue_v that_o impression_n 〈◊〉_d it_o have_v reduce_v the_o stone_n to_o the_o bottom_n of_o the_o sea_n from_o wheâ—â—â—_n it_o be_v project_v the_o difference_n therefore_o betwixt_o the_o resistance_n of_o the_o impress_v force_n by_o the_o
the_o planet_n which_o â—â—â—â—iâ—hstanding_n the_o delude_a sight_n be_v demonstrate_v not_o to_o be_v in_o onâ—_n buâ—_n 〈◊〉_d sphereâ—_n somâ—_n far_o â—rom_n some_o neâ—râ—â—_n to_o the_o earth_n disperâ—eâ—_n 〈…〉_z immense_a space_n for_o from_o hence_n that_o thâ—_n distance_n betwixt_o 〈…〉_z uâ—_n iâ—_n so_o vast_a thâ—t_v our_o sight_n not_o discern_v the_o large_a space_n intercept_v 〈…〉_z they_o in_o theâ—â—_n several_a orbed_a they_o all_o appeâ—â—e_n at_o the_o same_o distancâ—_n 〈…〉_z same_o circumference_n woâ—â—_n câ—ntre_n must_v be_v there_o wherâ—_n thâ—_n eye_n 〈…〉_z selâ—_n about_o do_v behold_v they_o so_o that_o in_o whatsoever_o part_n of_o the_o 〈◊〉_d â—pace_fw-fr oâ—_n thâ—_n world_n whether_o in_o the_o moon_n sun_n or_o any_o other_o orb_n 〈◊〉_d â—hall_v imaginâ—_n your_o selâ—_n to_o be_v place_v still_o you_o must_v according_a to_o 〈…〉_z oâ—_n your_o sight_n judge_v the_o world_n to_o be_v spherical_a anâ—_n that_o you_o 〈◊〉_d in_o the_o verâ—_n centre_n of_o that_o circumference_n in_o which_o you_o conceive_v all_o thâ—_n 〈◊〉_d star_n tâ—_n be_v constitute_v trulâ—_n 〈◊〉_d worthy_a thâ—_n admiration_n of_o a_o wise_a man_n to_o observe_v that_o the_o very_a planeâ—â—_n 〈◊〉_d admit_v by_o the_o aristotelean_n to_o have_v certain_a motion_n 〈…〉_z be_v move_v in_o such_o gire_n as_o have_v not_o their_o centre_n in_o the_o 〈…〉_z immens_o distant_a from_o it_o and_o yet_o that_o the_o same_o person_n 〈…〉_z contradict_v themselves_z as_o to_o account_n that_o the_o centre_n oâ—_n the_o 〈…〉_z common_a centre_n of_o the_o world_n about_o which_o all_o the_o celestial_a 〈…〉_z difficulty_n perpend_v wâ—_n can_v infallâ—blâ—_n 〈…〉_z earthy_a bâ—â—ieâ—_n when_o descend_v in_o direct_a lineâ—_n to_o 〈…〉_z towards_o the_o centre_n of_o the_o world_n and_o though_o theâ—_n 〈…〉_z towards_o the_o centre_n of_o the_o world_n yet_o do_v that_o seem_v 〈…〉_z be_v also_o by_o accident_n that_o they_o be_v carry_v towaâ—â—_n the_o 〈…〉_z earth_n in_o which_o as_o be_v a_o mere_a imaginary_a point_n theâ—_n 〈…〉_z attain_v quiet_n for_o per_fw-la se_fw-la they_o be_v carry_v toward_o the_o 〈…〉_z who_o will_v or_o principle_n and_o have_v once_o attain_v thereâ—â—_n 〈…〉_z as_o they_o no_o more_o seek_v to_o pass_v on_o from_o thence_o 〈…〉_z â—entre_fw-fr thaâ—_n a_o infant_n receive_v into_o his_o nurse_n arm_n or_o lap_n 〈…〉_z into_o heâ—_n entrail_n and_o mere_o per_fw-la accidens_fw-la be_v it_o that_o they_o 〈…〉_z the_o centre_n of_o the_o earth_n because_o tend_v in_o the_o near_a 〈…〉_z line_n to_o the_o place_n oâ—_n their_o quiet_a they_o must_v be_v direct_v 〈…〉_z since_o if_o we_o suppose_v that_o direct_a line_n to_o be_v continue_v it_o must_v 〈…〉_z the_o centre_n of_o the_o earth_n and_o thus_o have_v we_o leave_v no_o stone_n 〈…〉_z all_o aristotle_n theory_n of_o gravity_n which_o be_v that_o weight_n be_v a_o quality_n essential_o inhaerent_a in_o all_o terrene_a concrition_n whereby_o they_o spontaneously_v 〈◊〉_d â—oward_n the_o centre_n of_o the_o terrestrial_a globe_n aâ—_n to_o the_o common_a cenâ—â—e_n 〈…〉_z place_n in_o the_o universe_n the_o whole_a remainder_n of_o our_o praesepe_a 〈◊〉_d therefore_o concern_v our_o far_a confirmation_n of_o that_o 〈…〉_z of_o gravity_n which_o we_o have_v espouse_v which_o be_v 〈…〉_z mere_a effect_v of_o the_o magnetic_a attraction_n of_o the_o earth_n let_v we_o therefore_o once_o more_o resume_v our_o argument_n à _fw-la simili_fw-la attraction_n consider_v the_o analogy_n betwixt_o the_o attraction_n of_o iron_n by_o a_o loadstone_n and_o that_o of_o terrene_a concretion_n by_o the_o earth_n not_o only_o as_o to_o the_o manner_n of_o their_o respective_a attraction_n but_o chief_o as_o to_o the_o parity_n of_o reason_n in_o our_o judgement_n upon_o their_o sensible_a effect_n when_o a_o man_n hold_v a_o plate_n of_o iron_n of_o 6_o or_o 7_o ounce_n weight_n in_o his_o hand_n with_o a_o vigorous_a loadstone_n place_v at_o convenient_a distance_n underneath_o his_o hand_n and_o find_v the_o weight_n of_o the_o iron_n to_o be_v increase_v from_o ounce_n to_o pound_n if_o aristotle_n on_o one_o side_n shall_v tell_v he_o that_o that_o great_a weight_n be_v a_o quality_n essential_o inhaerent_a in_o the_o iron_n and_o kepler_n or_o gilbert_n on_o the_o other_o affirm_v to_o he_o that_o that_o weight_n be_v a_o quality_n mere_o adventitious_a or_o impress_v upon_o it_o by_o the_o attractive_a influence_n of_o the_o loadstone_n subjacent_a it_o be_v easy_a to_o determine_v to_o which_o of_o those_o so_o contrary_a judgement_n he_o will_v incline_v his_o assent_n if_o so_o well_o may_v we_o conceive_v the_o gravity_n of_o a_o stone_n or_o other_o terrene_a body_n to_o belong_v not_o so_o much_o to_o the_o body_n itself_o as_o to_o the_o attraction_n of_o that_o grand_a magnet_n the_o terraqueous_a globe_n lie_v underneath_o it_o for_o suppose_v that_o a_o loadstone_n be_v unknown_a to_o you_o place_v underneath_o your_o hand_n when_o you_o lift_v up_o a_o piece_n of_o iron_n from_o the_o earth_n though_o it_o may_v be_v pardonable_a for_o you_o to_o conclude_v that_o the_o great_a weight_n which_o you_o will_v observe_v therein_o be_v a_o quality_n essential_o inhaerent_a in_o the_o iron_n when_o yet_o in_o truth_n it_o be_v only_a external_n and_o attractitious_a because_o you_o be_v ignorant_a of_o the_o loadstone_n subjacent_a yet_o if_o after_o you_o be_v inform_v that_o the_o loadstone_n be_v place_v underneath_o your_o hand_n you_o shall_v persevere_v in_o the_o same_o opinion_n the_o great_a candour_n imaginable_a can_v not_o but_o condemn_v you_o of_o inexcusable_a pertinacity_n in_o a_o error_n thus_o also_o your_o ignorance_n of_o the_o earth_n be_v one_o great_a loadstone_n may_v excuse_v your_o adhaerence_n to_o the_o erroneous_a position_n of_o aristotle_n concern_v the_o formal_a reason_n of_o gravity_n but_o when_o you_o shall_v be_v convince_v that_o the_o terrestrial_a globe_n be_v natural_o endow_v with_o a_o certain_a attractive_a or_o magnetic_a virtue_n in_o order_n to_o the_o retention_n of_o all_o its_o part_n in_o cohaerence_n to_o itself_o and_o retraction_n of_o they_o when_o by_o violence_n distruct_v from_o it_o and_o that_o gravity_n be_v nothing_o but_o the_o effect_n of_o that_o virtue_n you_o can_v have_v no_o plea_n leave_v for_o the_o palliation_n of_o your_o obstinacy_n in_o case_n you_o recant_v not_o your_o former_a persuasion_n nor_o ought_v it_o to_o impede_fw-la your_o conviction_n that_o a_o far_o great_a gravity_n earth_n or_o strong_a attractive_a force_n be_v impress_v upon_o a_o piece_n of_o iron_n by_o a_o loadstone_n than_o by_o the_o earth_n insomuch_o as_o a_o loadstone_n suspend_v at_o convenient_a distance_n in_o the_o aer_fw-la do_v easy_o elevate_v a_o proportionate_a mass_n of_o iron_n from_o the_o earth_n because_o this_o gradual_a disparity_n proceed_v only_o from_o hence_o that_o the_o attractive_a virtue_n be_v much_o more_o collect_v or_o unite_v in_o the_o loadstone_n and_o so_o be_v so_o much_o more_o intense_a and_o vigorous_a according_a to_o its_o dimension_n than_o in_o the_o earth_n in_o which_o it_o be_v more_o diffuse_v nor_o do_v it_o discover_v how_o great_a iâ—_n be_v in_o the_o â—ingle_a or_o divide_a part_n but_o in_o the_o whole_a of_o the_o earth_n thus_o if_o you_o lay_v but_o one_o grain_n of_o salt_n upon_o your_o tongue_n it_o shall_v affect_v the_o same_o with_o more_o saltness_n than_o a_o gallon_n of_o sea-water_n not_o that_o there_o be_v less_o of_o salt_n in_o that_o great_a quantity_n of_o sea_n water_n but_o that_o the_o salt_n be_v therein_o more_o diffuse_v â—â—â—â—raction_n but_o to_o lay_v aside_o the_o loadstone_n and_o its_o correlative_a iron_n and_o come_v to_o our_o taste_n and_o incomparative_a argument_n since_o the_o velocity_n of_o the_o motion_n of_o a_o stone_n fall_v downward_o be_v gradual_o augment_v and_o by_o the_o accession_n of_o new_a degree_n of_o gravity_n grow_v great_a and_o great_a in_o each_o degree_n of_o its_o descenâ—_n 〈◊〉_d that_o augmentation_n or_o accession_n of_o gravity_n and_o so_o of_o velocity_n seem_v noâ—_n so_o reasonable_o adscriptive_a to_o any_o other_o cause_n as_o to_o this_o that_o it_o be_v the_o attraction_n of_o the_o earth_n increase_a in_o each_o degree_n of_o the_o stone_n appropinquation_n to_o the_o earth_n by_o reason_n of_o the_o great_a density_n or_o union_n of_o its_o magnetic_a ray_n what_o can_v be_v more_o 〈◊〉_d than_o that_o the_o first_o degree_n of_o gravity_n belong_v to_o a_o stone_n noâ—_n 〈◊〉_d move_v shall_v arise_v to_o it_o from_o the_o same_o attraction_n of_o the_o 〈◊〉_d when_o doubtless_o it_o be_v one_o and_o the_o same_o gravity_n that_o cause_v both_o those_o effect_n the_o same_o in_o specie_fw-la though_o not_o in_o gradâ—â—_n 〈◊〉_d no_o quality_n can_v be_v better_o intend_v or_o augment_v than_o by_o a_o accession_n of_o more_o degree_n of_o force_n from_o the_o same_o quality_n sect_n iii_o last_o as_o concern_v levity_n
we_o â—_o in_o comment_fw-fr 87._o that_o it_o be_v hâ—s_n opinion_n that_o a_o 〈…〉_z other_o thing_n â—alling_v from_o on_o high_a be_v corroborate_v 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d a_o totalitate_fw-la propria_fw-la and_o have_v its_o species_n maâ—â—_n morâ—_n and_o moâ—â—_n 〈◊〉_d as_o it_o come_v near_a and_o near_o to_o its_o proper_a 〈◊〉_d and_o so_o 〈…〉_z degree_n of_o gravity_n accede_v to_o it_o in_o every_o â—egree_n of_o its_o 〈◊〉_d to_o the_o earth_n it_o be_v according_o carry_v more_o and_o more_o swift_o but_o 〈◊〉_d that_o simplicius_n have_v not_o expound_v how_o the_o 〈◊〉_d stonâ—_n can_v 〈…〉_z how_o it_o can_v be_v corroborate_v or_o acquire_v more_o and_o more_o 〈…〉_z its_o species_n or_o how_o that_o additament_n of_o fresh_a â—ravity_n shall_v 〈…〉_z judge_v you_o whether_o he_o have_v do_v aristotle_n 〈…〉_z author_n of_o that_o opinion_n which_o instead_o of_o 〈◊〉_d â—he_v 〈…〉_z much_o more_o obscure_a than_o afore_o beside_o we_o have_v the_o 〈…〉_z that_o a_o descend_a body_n be_v not_o carry_v the_o more_o â—wâ—ftly_o by_o reâ—soâ—_n 〈◊〉_d â—ny_n access_n or_o additament_n of_o gravity_n a_o stone_n 〈…〉_z ounce_n 〈…〉_z as_o speedy_o down_o as_o one_o of_o a_o hundred_o pounâ—_n aristotle_n 2_o other_o 〈…〉_z as_o the_o same_o simplicius_n commemorate_v who_o 〈…〉_z the_o cause_o 〈…〉_z the_o decrease_v of_o the_o quantity_n of_o the_o aer_fw-la 〈◊〉_d the_o sâ—oâ—â—_n 〈◊〉_d that_o by_o how_o much_o the_o high_a a_o stone_n be_v by_o so_o 〈…〉_z and_o so_o much_o the_o great_a resistance_n to_o the_o motion_n 〈…〉_z much_o the_o great_a quantity_n of_o the_o aer_fw-la resist_v 〈…〉_z consequent_o the_o resistance_n of_o the_o aer_fw-la grow_v 〈…〉_z of_o the_o stone_n descent_n the_o velocity_n of_o its_o 〈…〉_z proportion_n thereunto_o and_o this_o after_o 〈…〉_z sink_v in_o deep_a water_n more_o slow_o 〈…〉_z near_o the_o bottom_n but_o though_o we_o admit_v 〈…〉_z stone_n descend_v yet_o we_o 〈…〉_z to_o mâ—ke_a â—ny_n sensible_a difference_n of_o 〈…〉_z and_o will_v you_o have_v a_o argument_n to_o 〈…〉_z one_o fathom_n 〈…〉_z fall_v the_o same_o 〈…〉_z fathom_n observe_v again_o with_o what_o velocity_n it_o pass_v the_o last_o or_o ten_o fathom_n this_o do_v consider_v sinâ—e_v in_o the_o latter_a case_n the_o velocity_n shall_v be_v incomparable_o great_a than_o in_o the_o former_a whether_o it_o be_v not_o necessary_a that_o thâ—t_o great_a augmentation_n of_o velocity_n in_o the_o stone_n while_o it_o pervade_v the_o tâ—nth_o fathom_n of_o space_n must_v not_o arise_v from_o some_o other_o and_o more_o potent_a câ—use_n thâ—n_v the_o resistance_n of_o the_o inferior_a 〈◊〉_d for_o in_o both_o caseâ—_n the_o stone_n carry_v the_o same_o proportion_n of_o weight_n and_o in_o the_o low_a fathom_n there_o be_v the_o same_o quantity_n of_o aer_fw-la and_o consequent_o the_o same_o measure_n oâ—_n resistance_n and_o if_o you_o weigh_v the_o stone_n fiâ—st_v in_o some_o very_a high_a place_n â—nâ—_n afterward_o in_o a_o low_a or_o very_o near_o the_o earth_n sure_o you_o can_v expect_v to_o finde_v heavy_a in_o the_o low_a place_n in_o respect_n of_o the_o lesser_a quantity_n of_o aâ—r_a â—ubâ—jaâ—ent_n than_o in_o the_o high_a in_o respect_n of_o the_o great_a quantity_n of_o aer_fw-la there_o 〈◊〉_d it_o last_o as_o for_o their_o argument_n desume_v from_o the_o slow_a sinkâ—ing_n of_o weight_n in_o deep_a than_o in_o shallow_a 〈…〉_z thereof_o 〈…〉_z same_o with_o thâ—t_n of_o the_o more_o difficult_a depression_n of_o a_o 〈…〉_z aer_fw-la near_o the_o bottom_n thâ—n_o near_o the_o top_n of_o the_o 〈…〉_z explain_v 3_o a_o three_o conceit_n there_o 〈◊〉_d impute_v to_o hipparchuâ—_n art_n by_o the_o 〈◊〉_d simplicius_n which_o compare_v the_o downward_o motion_n of_o a_o stone_n 〈◊〉_d by_o its_o own_o proper_a gravity_n with_o the_o upward_o motion_n of_o the_o 〈…〉_z cause_v by_o a_o external_n â—orce_v impress_v upon_o it_o by_o the_o 〈…〉_z infer_v that_o as_o long_o as_o the_o force_n impress_v praevail_v over_o the_o stone_n gravity_n 〈◊〉_d long_o be_v the_o stone_n carry_v upward_o and_o that_o more_o swift_o in_o the_o beginning_n because_o the_o â—orce_n be_v then_o strong_a but_o afterward_o less_o and_o less_o swift_o because_o the_o same_o fâ—rce_n impress_v be_v gradual_o debilitate_a until_o the_o stone_n proper_a gravity_n at_o length_n get_v the_o upper_a hand_n of_o the_o force_n impress_v the_o stone_n begin_v it_o motion_n downward_o which_o be_v slow_a in_o the_o beginning_n because_o the_o gravity_n do_v not_o yâ—t_o much_o praevail_v but_o afterward_o grow_v more_o and_o more_o swift_a because_o the_o gravity_n more_o and_o more_o praevail_v but_o this_o leave_v we_o more_o than_o half_a way_n short_a of_o the_o difficulty_n for_o though_o it_o be_v reasonable_a to_o assume_v that_o a_o certain_a compensation_n of_o velocity_n be_v make_v in_o both_o 〈…〉_z that_o the_o decrease_v of_o velocity_n towards_o the_o end_n of_o the_o upward_o motion_n be_v make_v up_o again_o by_o the_o increase_n of_o velocity_n towards_o the_o end_n of_o the_o downward_o and_o that_o in_o proportion_n to_o the_o degree_n of_o space_n yet_o forasmuch_o as_o the_o motion_n of_o a_o stone_n fall_v down_o be_v constant_o accelerate_a not_o only_o after_o it_o have_v be_v project_v upward_o but_o also_o when_o it_o be_v only_o drop_v down_o from_o some_o high_a place_n to_o which_o perhaps_o it_o be_v never_o elevate_v but_o remain_v there_o from_o the_o begin_n of_o the_o world_n as_o it_o often_o happen_v in_o deep_a mine_n the_o earth_n â—â—derneath_o the_o stone_n near_o the_o surface_n of_o it_o be_v 〈…〉_z can_v the_o stone_n gravity_n gradual_o praevail_v over_o the_o impress_v force_n be_v as_o hipparchus_n conclude_v the_o cause_n of_o itâ—_n 〈…〉_z of_o its_o descent_n these_o reason_n thus_o delude_v our_o curiosity_n art_n let_v we_o have_v 〈…〉_z former_o asserted_a position_n that_o all_o terrene_a 〈…〉_z be_v attract_v by_o the_o magnetic_a virtue_n of_o the_o earth_n 〈…〉_z that_o the_o magnetic_a virtue_n of_o the_o earth_n be_v 〈…〉_z afar_z off_o and_o thereupon_o infer_v that_o the_o 〈…〉_z therefore_o more_o rapid_a near_o the_o earth_n than_o far_o from_o 〈…〉_z take_v virtue_n seem_v to_o be_v great_a and_o so_o the_o 〈…〉_z truth_n near_o the_o stone_n 〈…〉_z and_o plausible_a to_o our_o first_o thought_n but_o insatisfactory_a to_o our_o second_o for_o if_o it_o be_v so_o then_o ought_v the_o celerity_n of_o the_o stone_n motion_n in_o one_o fathom_n near_o the_o earth_n to_o be_v the_o same_o whether_o the_o stone_n be_v let_v fall_v from_o the_o altitude_n of_o only_a one_o fathom_n or_o from_o that_o of_o 10_o 20_o a_o 100_o fathom_n when_o we_o exact_o measure_v the_o spaâ—â—_n of_o time_n in_o which_o it_o pervade_v the_o one_o fathom_n near_o the_o earth_n in_o the_o former_a case_n and_o compare_v it_o with_o that_o space_n of_o time_n in_o which_o it_o pervade_v the_o same_o low_a fathom_n in_o the_o latter_a it_o may_v be_v far_o observe_v that_o whether_o a_o stone_n be_v let_v fall_v from_o a_o small_a or_o a_o great_a altitude_n the_o motion_n thereof_o for_o the_o first_o fathom_n of_o its_o descent_n be_v always_o of_o equal_a velocity_n i._n e._n it_o be_v not_o more_o nor_o less_o swift_a for_o the_o first_o fathom_n of_o its_o descent_n from_o the_o altitude_n of_o a_o 1st_a fathom_n than_o from_o the_o altitude_n of_o only_a two_o fathom_n when_o yet_o it_o ought_v to_o be_v more_o swift_a for_o the_o first_o fathom_n of_o the_o two_o than_o for_o the_o first_o of_o the_o hundred_o if_o the_o attraction_n of_o the_o earth_n be_v more_o vehement_a near_o at_o hand_n than_o far_o off_o in_o a_o sensible_a proportion_n we_o say_v in_o a_o sensible_a proportion_n because_o forasmuch_o as_o the_o magnetic_a ray_n emit_v from_o it_o be_v diffuse_v in_o â—ound_n from_o all_o part_n of_o the_o superfice_n thereof_o and_o so_o must_v be_v so_o much_o the_o more_o dense_a and_o consequent_o more_o potent_a by_o how_o much_o less_o they_o be_v remove_v from_o it_o therefore_o must_v the_o attraction_n be_v somewhat_o more_o potent_a at_o little_a than_o at_o very_o great_a distance_n but_o yet_o there_o be_v no_o tower_n or_o precipice_n so_o high_a as_o to_o accommodate_v we_o with_o convenience_n to_o experiment_n whether_o the_o power_n of_o the_o earth_n magnetic_a ray_n be_v great_a to_o a_o sensible_a proportion_n in_o a_o very_a low_a place_n than_o in_o a_o very_a high_a and_o yet_o notwithstanding_o nothing_o seem_v more_o reasonable_a than_o to_o conceive_v that_o since_o the_o magnetic_a attraction_n of_o the_o earth_n be_v the_o true_a cause_n of_o a_o stone_n downward_o motion_n therefore_o it_o shall_v be_v also_o the_o true_a cause_n of_o the_o continual_a increment_n of_o its_o velocity_n during_o that_o motion_n but_o how_o it_o shall_v be_v so_o there_o be_v the_o knot_n which_o
rhegium_n at_o the_o usual_a time_n of_o the_o apparition_n i_o examine_v all_o the_o circumstance_n thereof_o together_o with_o the_o situation_n of_o the_o place_n the_o nature_n and_o propriety_n of_o the_o soil_n and_o the_o constitution_n of_o the_o vapour_n arise_v from_o the_o sea_n and_o examine_v my_o observation_n by_o physical_a and_o optical_a reason_n i_o soon_o detect_v the_o cause_n of_o the_o whole_a phaenomenon_n first_o i_o observe_v the_o mountain_n call_v tinna_n on_o the_o sicilian_a side_n direct_o confront_v rhegium_n to_o run_v along_o in_o a_o duskish_a obscure_a tract_n upon_o pelorus_n and_o the_o shore_n subjacent_a as_o also_o the_o bottom_n of_o the_o sea_n to_o be_v cover_v with_o shine_a sand_n be_v the_o fragment_n of_o selenites_n antimony_n and_o other_o pellucid_a concretion_n devolve_v from_o the_o eminent_a part_n of_o the_o land_n the_o contiguous_a hill_n that_o be_v rich_o fraught_v with_o vein_n of_o those_o mineral_n then_o i_o observe_v that_o these_o translucid_a sand_n be_v together_o with_o vapour_n from_o the_o sea_n and_o shore_n exhale_v into_o the_o aer_fw-la by_o the_o intense_a fervour_n of_o the_o sun_n do_v coalesce_v into_o a_o cloud_n in_o all_o point_n respondent_fw-la to_o a_o perfect_a polyedrical_n or_o multangular_a looking-glass_n the_o various_a superficies_n of_o the_o resplendent_a granule_n make_v a_o multiplication_n of_o the_o species_n and_o that_o these_o be_v opacate_v behind_o by_o crass_a and_o impervious_a vapour_n direct_o face_v the_o mountain_n do_v make_v reflection_n of_o the_o various_a image_n of_o object_n respective_a to_o their_o various_a position_n to_o the_o eye_n the_o several_a row_v of_o pillar_n in_o the_o aereal_a scene_n be_v cause_v by_o one_o single_a pillar_n erect_v on_o the_o shore_n for_o be_v by_o a_o manifold_a reflection_n from_o the_o various_a superficies_n of_o the_o tralucent_a particle_n opacate_v on_o the_o hinder_a part_n by_o dense_a vapour_n in_o the_o speculary_a meteor_n it_o be_v multiply_v even_o to_o infinity_n no_o otherwise_o then_o as_o one_o single_a image_n posit_v betwixt_o two_o polyedrical_a looking-glass_n confront_o dispose_v be_v so_o often_o repercuss_v or_o reflect_v from_o superfice_n to_o superfice_v that_o it_o exhibit_v to_o the_o eye_n almost_o a_o infinite_a multitude_n of_o image_n exact_o consimilar_v thus_o also_o do_v one_o man_n stand_v on_o the_o shore_n become_v a_o whole_a army_n in_o the_o cloud_n one_o beast_n a_o whole_a herd_n and_o one_o tree_n a_o thick-set_a grove_n as_o for_o the_o vanish_v of_o this_o first_o scene_n and_o the_o succession_n of_o a_o second_o adorn_v with_o the_o representation_n of_o castle_n and_o other_o magnificent_a structure_n the_o cause_n hereof_o be_v this_o since_o the_o eye_n of_o the_o spectator_n have_v its_o sight_n various_o terminate_v in_o the_o several_a speculary_a superficies_n of_o the_o cloud_n that_o be_v in_o perpetual_a motion_n according_a to_o the_o impulse_n of_o the_o wind_n it_o come_v to_o pass_v that_o according_a to_o the_o rule_n of_o the_o angle_n of_o incidence_n and_o reflection_n divers_a species_n be_v behold_v under_o the_o same_o constitute_v angle_n and_o as_o the_o speculary_a vapour_n do_v reflect_v they_o towards_o the_o eye_n which_o divers_a species_n be_v project_v from_o object_n convenient_o situate_a and_o particular_o from_o the_o castle_n on_o the_o ascent_n towards_o rhegium_n from_o the_o place_n of_o our_o prospect_n some_o perhaps_o may_v judge_v our_o affirmation_n of_o the_o elevation_n of_o those_o shine_a grain_n of_o vitreous_a mineral_n into_o the_o aer_fw-la by_o the_o mere_a attraction_n of_o the_o sun_n and_o the_o coalition_n of_o they_o there_o with_o the_o cloud_n of_o vapour_n to_o be_v too_o large_a a_o morsel_n to_o be_v swallow_v by_o any_o throat_n but_o that_o cormorant_n one_o of_o credulity_n if_o so_o all_o we_o require_v of_o they_o be_v only_o to_o consider_v that_o hair_n straw_n grain_n of_o sand_n fragment_n of_o wood_n and_o such_o like_a festucous_a body_n be_v frequent_o find_v immure_v in_o hailstone_n which_o doubtless_o be_v sufficient_a argument_n that_o those_o thing_n be_v first_o elevate_v by_o the_o beam_n of_o the_o sun_n recoil_v from_o the_o earth_n into_o the_o middle_a region_n of_o the_o aer_fw-la and_o there_o coagmentate_v with_o the_o vapour_n condense_v into_o a_o cloud_n and_o freeze_v in_o its_o descent_n now_o this_o solution_n of_o the_o morgana_n acquire_v the_o more_o of_o certitude_n and_o authority_n from_o hence_o nature_n that_o in_o imitation_n of_o this_o natural_a prodigious_a ostent_n or_o aereal_a representation_n kircher_n invent_v a_o way_n of_o exhibit_v a_o artificial_a one_o by_o the_o fragment_n of_o glass_n selenites_n antimony_n etc._n etc._n stew_a in_o a_o iron_n trough_n and_o vapour_n ascend_v from_o water_n superaffuse_v and_o terminate_v by_o a_o black_a curtain_n superextend_v the_o full_a description_n of_o which_o artifice_n he_o have_v make_v the_o subject_a of_o his_o 2._o parastasis_fw-la in_o magia_n parastat_fw-la cap._n 1._o chap._n iii_o concern_v the_o manner_n and_o reason_n of_o vision_n sect_n i._o among_o the_o many_o different_a conception_n of_o philosopher_n both_o ancient_a and_o modern_a touch_v the_o manner_n and_o reason_n of_o the_o discernment_n of_o the_o magnitude_n figure_n etc._n etc._n of_o visible_a object_n by_o the_o visive_n faculty_n in_o the_o eye_n the_o most_o considerable_a be_v these_o 1_o the_o stoic_n affirm_v stoic_n that_o certain_a visory_a ray_n deradiate_v from_o the_o brain_n through_o the_o slender_a perforation_n of_o the_o optic_a nerve_n into_o the_o eye_n and_o from_o thence_o in_o a_o continue_a fluor_fw-la to_o the_o object_n do_v by_o a_o kind_n of_o procusion_n and_o compression_n dispose_v the_o whole_a aer_fw-la intermediate_v in_o a_o direct_a line_n into_o a_o cone_n who_o point_n consist_v in_o the_o superfice_n of_o the_o eye_n and_o base_a in_o the_o superfice_n of_o the_o object_n and_o that_o as_o the_o hand_n by_o the_o mediation_n of_o a_o staff_n impose_v on_o a_o body_n do_v according_a to_o the_o degree_n of_o resistance_n make_v thereby_o either_o direct_o or_o lateral_o deprehend_v the_o tactile_a quality_n thereof_o i._n e._n whether_o it_o be_v hard_a or_o soft_a smooth_a or_o rough_a whether_o it_o be_v clay_n or_o wood_n iron_n or_o stone_n cloth_n or_o leather_n etc._n etc._n so_o likewise_o do_v the_o eye_n by_o the_o mediation_n of_o this_o aereal_a staff_n discern_v whether_o the_o adspectable_a object_n on_o which_o the_o basis_n of_o it_o rest_v be_v white_a or_o black_a green_n or_o red_a symetrical_a or_o asymetrical_a in_o the_o figure_n of_o its_o part_n and_o consequent_o beautiful_a or_o deform_v aristotle_n 2_o aristotle_n though_o his_o judgement_n never_o acquiesce_v in_o any_o one_o point_n as_o to_o this_o particular_a do_v yet_o seem_v to_o have_v most_o constant_o incline_v to_o this_o that_o the_o colour_n of_o the_o visible_a do_v move_v the_o perspicuum_fw-la actu_fw-la i._n e._n that_o illustrate_v nature_n in_o the_o aer_fw-la water_n or_o any_o other_o 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d transparent_a body_n and_o that_o by_o reason_n of_o its_o continuity_n from_o the_o extreme_n of_o the_o object_n to_o the_o eye_n do_v move_v the_o eye_n and_o by_o the_o mediation_n thereof_o the_o internal_a sensorium_n or_o visive_n faculty_n and_o so_o inform_v it_o of_o the_o visible_a quality_n thereof_o so_o that_o according_a to_o the_o descant_n of_o those_o who_o pretend_v to_o be_v his_o most_o faithful_a interpreter_n we_o may_v understand_v he_o to_o have_v imagine_v the_o colour_n of_o the_o object_n to_o be_v as_o it_o be_v the_o hand_n the_o diaphanous_a medium_fw-la as_o it_o be_v the_o staff_n and_o the_o eye_n as_o it_o be_v the_o body_n on_o which_o it_o be_v impose_v and_o impress_v è_fw-la diametro_fw-la opposite_a to_o the_o conceit_n of_o the_o stoic_n who_o suppose_v the_o eye_n to_o supply_v the_o place_n of_o the_o hand_n the_o aer_fw-la to_z analogize_v the_o staff_n and_o the_o object_n to_o respond_v to_o the_o body_n on_o which_o it_o be_v impose_v and_o impress_v pythagorean_o 3_o the_o pythagorean_n determine_v the_o reason_n of_o vision_n on_o the_o reflection_n of_o the_o visive_n ray_n in_o a_o continue_a stream_n emit_v from_o the_o internal_a eye_n to_o the_o visible_a back_o again_o into_o the_o eye_n or_o more_o plain_o that_o the_o radious_a emanation_n from_o the_o eye_n arrive_v at_o the_o superfice_n of_o the_o object_n be_v thereby_o immediate_o repercuss_v in_o a_o uninterrupted_a stream_n home_o again_o to_o the_o eye_n in_o their_o return_n bring_v along_o with_o they_o a_o perfect_a representation_n thereof_o as_o to_o colour_n figure_n and_o magnitude_n empedocles_n 4_o empedocles_n though_o admit_v as_o we_o hint_v in_o the_o next_o praecede_v chapter_n substantial_a efflux_n from_o the_o visible_a to_o the_o organ_n of_o sight_n do_v also_o assume_v the_o
water_n and_o that_o of_o the_o aer_fw-la consi_v only_a in_o degree_n or_o more_o and_o less_o and_o though_o the_o 〈◊〉_d of_o the_o aer_fw-la may_v be_v think_v very_o inconsiderable_a in_o comparison_n oâ—_n 〈◊〉_d great_a violence_n impress_v upon_o a_o cannon_n bullet_n shoot_v upward_o 〈…〉_z the_o aer_fw-la yet_o be_v please_v to_o consider_v that_o it_o hold_v some_o 〈◊〉_d proportion_n with_o the_o renitency_n oâ—_n the_o water_n which_o 〈…〉_z that_o we_o may_v understand_v compare_v we_o not_o only_o the_o very_a 〈◊〉_d ascent_n of_o a_o stone_n throw_v upward_o from_o the_o bottom_n of_o the_o sea_n to_o the_o large_a ascent_n of_o the_o same_o stone_n with_o equal_a force_n from_o the_o earth_n throw_v up_o into_o the_o aer_fw-la but_o also_o the_o almost_o insensible_a progress_n of_o a_o bullet_n shoot_v from_o a_o cannon_n transvers_o through_o water_n with_o that_o vast_a progress_n it_o be_v common_o observe_v to_o make_v through_o the_o aer_fw-la and_o we_o shall_v soon_o be_v convince_v that_o as_o the_o great_a resistance_n of_o the_o water_n be_v the_o cause_n why_o the_o stone_n or_o bullet_n make_v so_o small_a a_o progress_n therein_o so_o be_v the_o small_a resistance_n of_o the_o aer_fw-la the_o cause_n why_o they_o both_o pervade_v so_o great_a a_o space_n therein_o and_o thus_o be_v it_o demonstrable_a that_o the_o resistance_n of_o the_o superior_a aer_fw-la be_v the_o external_n agent_n which_o constant_o resist_v by_o degree_n refract_v and_o at_o length_n whole_o overcome_v the_o impress_v force_n whereby_o heavy_a body_n be_v violent_o elevate_v up_o into_o the_o aer_fw-la the_o difficulty_n remain_v therefore_o motion_n do_v only_o concern_v the_o impellent_fw-fr cause_n of_o their_o fall_n down_o again_o or_o whether_o the_o aer_fw-la beside_o the_o force_n of_o resistance_n have_v also_o any_o depulsive_a faculty_n which_o be_v impress_v upon_o a_o stone_n bullet_n or_o other_o ponderous_a body_n at_o the_o top_n or_o high_a point_n of_o its_o mountee_n serve_v to_o turn_v the_o same_o downward_o and_o afterward_o to_o continue_v its_o perpendicular_a descent_n till_o it_o arrive_v at_o and_o quiesce_v on_o the_o earth_n which_o indeed_o seem_v well_o worthy_a our_o doubt_n because_o it_o be_v observable_a that_o wall_n pavement_n and_o the_o like_a solid_a and_o immote_a body_n though_o they_o strong_o resist_v the_o motion_n of_o body_n impinge_v against_o they_o do_v not_o yet_o impress_v any_o contrary_a motion_n thereupon_o the_o rebound_v of_o a_o ball_n or_o bullet_n from_o a_o wall_n be_v the_o effect_n mere_o of_o the_o same_o force_n impress_v upon_o it_o by_o the_o racket_n or_o gunpowder_n fire_v which_o first_o move_v it_o as_o be_v evident_a even_o from_o hence_o that_o the_o resilition_n of_o they_o to_o great_a or_o less_o distance_n be_v according_a to_o the_o more_o or_o less_o of_o the_o force_n impress_v upon_o they_o which_o those_o gunner_n well_o understand_v who_o experiment_n the_o strength_n of_o their_o powder_n by_o the_o greatness_n of_o the_o bullet_n rebound_v from_o a_o wall_n and_o to_o solve_v this_o difficulty_n we_o must_v distinguish_v betwixt_o body_n that_o be_v devoid_a of_o motion_n and_o which_o be_v distract_v have_v no_o faculty_n of_o restitution_n whereby_o to_o recollect_v their_o dissociate_v particle_n and_o so_o repair_v themselves_o of_o which_o sort_n be_v wall_n pavement_n &c_n &c_n and_o such_o body_n that_o be_v actual_o in_o motion_n and_o which_o by_o reason_n of_o a_o natural_a elater_n or_o spring_n of_o restitution_n easy_o and_o speedy_o redintegrate_a themselves_o and_o restore_v their_o sever_a part_n to_o the_o same_o contexture_n and_o tenor_n which_o they_o hold_v before_o their_o violent_a distraction_n to_o which_o classis_fw-la the_o aer_fw-la do_v principal_o belong_v now_o concern_v the_o first_o sort_n what_o we_o object_n of_o the_o non-impression_n of_o any_o contrary_a motion_n upon_o body_n impinge_v against_o they_o be_v most_o certain_o true_a but_o not_o concern_v the_o latter_a for_o the_o arm_n of_o a_o tree_n be_v inflect_v do_v not_o only_o resist_v the_o inflect_a force_n but_o with_o such_o a_o spring_n return_n to_o its_o natural_a site_n as_o serve_v to_o impel_v any_o body_n of_o competent_a weight_n that_o shall_v oppose_v its_o recurse_n to_o great_a distance_n as_o in_o the_o discharge_n of_o a_o arrow_n from_o a_o bow_n thus_o also_o the_o aer_fw-la though_o otherwise_o unmoved_a may_v be_v so_o distract_v by_o a_o body_n violent_o pervade_v it_o as_o that_o the_o part_n thereof_o urge_v by_o their_o own_o native_a confluxibility_n the_o cause_n of_o all_o elaterical_a or_o restorative_n motion_n must_v soon_o return_v to_o their_o natural_a tenor_n and_o site_n and_o not_o without_o a_o certain_a violence_n and_o so_o replenish_v the_o place_n former_o possess_v but_o now_o desert_v by_o the_o body_n that_o distract_v they_o thâ—â—_n there_o be_v so_o powerful_a a_o restorasive_n faculty_n in_o the_o aer_fw-la as_o we_o here_o assume_v innumerable_a be_v the_o experiment_n those_o especial_o by_o philosopher_n usual_o allege_v against_o a_o vacuum_n coacervate_a which_o attest_v however_o that_o you_o may_v the_o less_o doubt_n of_o its_o have_v some_o and_o a_o considerable_a force_n of_o propel_a body_n notwithstanding_o it_o be_v fluid_a in_o so_o high_a a_o degree_n be_v please_v only_o to_o reflect_v your_o thought_n upon_o the_o great_a â—orce_n of_o wind_n which_o tear_v up_o the_o deep_a and_o firm_a root_a cedar_n â—â—om_o the_o ground_n demolish_v mighty_a castle_n overset_v the_o proud_a câ—â—racts_n and_o roll_v the_o whole_a ocean_n up_o and_o down_o from_o shore_n to_o shoâ—â—_n consider_v the_o incredible_a violence_n wherewith_o a_o bullet_n be_v discharge_v from_o a_o wind-gun_n through_o a_o firm_a plank_n of_o two_o or_o three_o inch_n thickness_n consider_v that_o no_o effect_n be_v more_o admirable_a than_o that_o a_o very_a small_a quantity_n of_o flame_n shall_v with_o such_o prodigious_a impetuosity_n drive_v a_o bullet_n so_o dense_a and_o ponderous_a from_o a_o cannon_n through_o thâ—_n gate_n of_o a_o city_n and_o at_o very_o great_a distance_n and_o yet_o the_o flame_n 〈◊〉_d the_o gunpowder_n be_v not_o less_o but_o more_o fluid_a than_o aer_fw-la who_o without_o the_o certificate_n of_o experience_n can_v believe_v that_o mere_o by_o the_o force_n of_o so_o little_a flame_n a_o substance_n the_o most_o fluid_a of_o 〈◊〉_d that_o we_o know_v not_o only_o so_o weighty_a a_o bullet_n shall_v be_v drive_v with_o such_o pernicity_n forward_o through_o the_o aer_fw-la to_o the_o distance_n of_o many_o furlong_n but_o also_o that_o so_o vast_a a_o weight_n as_o a_o cannon_n and_o its_o carriage_n bear_v shall_v at_o the_o same_o time_n be_v thereby_o drive_v backward_o or_o make_v to_o recoil_v what_o therefore_o will_v you_o say_v if_o this_o can_v not_o come_v to_o pass_v without_o the_o concurrence_n of_o the_o aer_fw-la for_o it_o seem_v to_o be_v effect_v when_o the_o flame_n at_o the_o instant_n of_o its_o creation_n seek_v to_o possess_v a_o more_o ample_a room_n or_o space_n do_v conjure_n its_o impetus_fw-la or_o violence_n as_o well_o upon_o the_o breech_n or_o hinder_v part_n 〈◊〉_d the_o canon_n as_o upon_o the_o bullet_n lie_v before_o it_o in_o the_o bore_n or_o 〈◊〉_d which_o discharge_v through_o the_o concave_n be_v close_o press_v upon_o 〈◊〉_d the_o pursue_a flame_n so_o that_o the_o flame_n immediate_o perish_v 〈◊〉_d leave_v a_o void_a space_n the_o aer_fw-la from_o the_o front_n or_o adverse_a part_n instaâ—â—_n rush_v into_o the_o bore_n and_o that_o with_o such_o impetuous_a pernicity_n 〈◊〉_d it_o force_v the_o cannon_n to_o give_v back_o and_o yield_v a_o fragor_fw-la or_o report_n as_o loud_a as_o thunder_n nay_o by_o the_o commotion_n of_o the_o vicine_fw-la aer_fw-la 〈◊〉_d â—â—akes_v even_o the_o large_a structure_n and_o shatter_v glass-window_n 〈◊〉_d in_o the_o sphere_n of_o its_o violence_n and_o all_o mere_o from_o the_o 〈◊〉_d motion_n of_o the_o aer_fw-la restore_v its_o distract_a part_n to_o their_o natural_a tenor_n or_o laxity_n so_o that_o you_o may_v be_v satisfy_v of_o its_o capacity_n not_o only_o to_o resist_v the_o ascent_n of_o a_o stone_n throw_v upward_o but_o also_o of_o depel_v it_o downward_o by_o a_o impress_v motion_n 〈…〉_z notwithstanding_o our_o conquest_n of_o the_o main_a body_n of_o this_o difficulty_n abouâ—_n the_o restorative_n motion_n of_o the_o aer_fw-la we_o be_v yet_o to_o encounter_v 〈◊〉_d formidable_a reserve_n which_o consist_v of_o these_o scruple_n when_o a_o 〈◊〉_d be_v throw_v upward_o do_v not_o the_o aer_fw-la in_o each_o degree_n of_o 〈◊〉_d ascent_n suffer_v a_o distraction_n of_o its_o part_n and_o so_o be_v compel_v 〈◊〉_d a_o periosis_n or_o circular_a motion_n to_o succeed_v into_o the_o place_n leave_v below_o by_o the_o stone_n do_v it_o not_o therefore_o impress_v rather_o a_o 〈◊〉_d than_o a_o depulsive_a
force_n thereupon_o and_o so_o promote_v the_o force_n impress_v upon_o it_o by_o the_o hand_n of_o he_o who_o project_v it_o and_o must_v it_o not_o thence_o follow_v that_o the_o first_o impress_v motion_n be_v so_o far_o from_o be_v decrease_v by_o the_o suppose_a renitency_n of_o the_o superior_a aer_fw-la that_o it_o be_v rather_o increase_v and_o promote_v by_o the_o circulation_n thereof_o and_o upon_o consequence_n that_o the_o stone_n be_v carry_v upward_o twice_o as_o swift_o as_o it_o fall_v downward_o since_o it_o be_v impel_v upward_o by_o two_o force_n but_o fall_v down_o again_o only_o by_o a_o single_a force_n true_a it_o be_v that_o while_o a_o stone_n be_v fall_v down_o the_o distract_a aer_fw-la beneath_o seem_n to_o circulate_v into_o the_o place_n above_o desert_a thereby_o but_o in_o case_n a_o stone_n be_v hold_v up_o on_o high_a in_o the_o aer_fw-la by_o a_o man_n hand_n or_o other_o support_n and_o that_o support_v be_v withdraw_v so_o gentle_o as_o to_o cause_v no_o considerable_a commotion_n in_o the_o aer_fw-la in_o this_o case_n there_o seem_v to_o be_v no_o reason_n why_o the_o aer_fw-la shall_v flow_v from_o above_o down_o upon_o it_o in_o the_o first_o moment_n of_o its_o delapse_n beside_o when_o a_o stone_n project_v upward_o have_v attain_v to_o the_o high_a point_n of_o its_o ascent_n at_o which_o there_o seem_v to_o be_v a_o short_a pause_n or_o respite_n from_o motion_n cause_v by_o the_o aequilibration_n of_o the_o two_o contrary_a force_n the_o movent_fw-la and_o resistent_fw-la why_o do_v not_o the_o stone_n absolute_o quiesce_v in_o that_o place_n there_o be_v in_o the_o aer_fw-la no_o cause_n which_o shall_v rather_o depel_v it_o â—ownward_o then_o elevate_v it_o upward_o these_o consideration_n we_o ingenuous_o confess_v be_v potent_a and_o put_v we_o to_o the_o exigent_n of_o explore_v some_o other_o external_n principle_n beside_o the_o motion_n of_o restitution_n in_o the_o aer_fw-la such_o as_o may_v begin_v the_o downward_o motion_n of_o the_o stone_n when_o gentle_o drop_v off_o from_o some_o convenient_a supporter_n or_o when_o it_o be_v at_o the_o zenith_n or_o high_a point_n of_o its_o ascent_n and_o and_o at_o the_o term_n of_o its_o aequilibration_n overcome_v the_o resistance_n of_o the_o subjacent_a aer_fw-la that_o so_o it_o may_v not_o only_o yield_v to_o the_o stone_n in_o the_o first_o moment_n of_o its_o descent_n but_o by_o successive_a circulation_n afterward_o promote_v and_o gradual_o accelerate_v its_o motion_n once_o begin_v depellent_fw-fr cause_n there_o can_v be_v none_o and_o so_o there_o must_v be_v some_o attrahent_fw-la to_o begin_v the_o stone_n precipitation_n and_o that_o can_v be_v no_o other_o but_o a_o certain_a peculiar_a virtue_n of_o the_o whole_a terrestrial_a globe_n whereby_o it_o do_v not_o only_o retain_v all_o its_o part_n while_o they_o be_v contiguous_a or_o unite_a to_o it_o but_o also_o retract_v they_o to_o itself_o when_o by_o any_o violence_n they_o have_v be_v avulse_v and_o separate_v and_o this_o virtue_n may_v therefore_o be_v proper_o enough_o call_v magnetic_a in_o nature_n nothing_o be_v whole_a and_o entire_a part_n in_o which_o there_o be_v not_o radical_o implant_v a_o certain_a self-conservatory_a power_n whereby_o it_o may_v both_o contain_v its_o several_a part_n in_o cohaerence_n to_o itself_o and_o in_o some_o measure_n resist_v the_o separation_n or_o distraction_n of_o they_o as_o all_o philosopher_n upon_o the_o conviction_n of_o infinite_a experience_n decree_n and_o if_o so_o it_o be_v a_o very_a parâ—ial_a absurdity_n to_o bereave_v the_o terraqueous_a globe_n be_v a_o body_n whole_a and_o entire_a of_o the_o like_a conservatory_n faculty_n and_o hence_o come_v it_o that_o if_o any_o part_n of_o the_o earth_n be_v violent_o avell_v from_o it_o by_o this_o conservatory_n which_o must_v be_v attractive_a virtue_n it_o in_o some_o measure_n resist_v their_o avulsion_n and_o after_o the_o cessation_n of_o the_o avell_a violence_n retract_v they_o again_o and_o this_o by_o insensible_a emanation_n or_o subtle_a thread_n deradiate_v continual_o from_o its_o whole_a body_n and_o hook_a or_o fasten_v to_o they_o as_o a_o man_n retract_v a_o bird_n fly_v from_o his_o hand_n by_o a_o line_n or_o thread_n tie_v to_o its_o foot_n globe_n by_o the_o part_n of_o the_o terrestrial_a globe_n we_o intend_v not_o only_o the_o part_n of_o earth_n and_o water_n the_o liquid_a part_n of_o the_o earth_n and_o as_o blood_n in_o a_o animal_n nor_o only_a all_o stone_n metal_n mineral_n plant_n animal_n and_o whatever_o body_n derive_v their_o principle_n from_o they_o such_o as_o rain_v dew_n snow_n hail_o and_o all_o meteor_n vapour_n and_o exhalation_n nor_o only_o the_o aer_fw-la wherewith_o the_o globe_n of_o earth_n be_v circumve_v as_o a_o quince_n or_o malacotone_n be_v periwiggd_v about_o with_o a_o lanuginous_a or_o hoary_a substance_n because_o if_o we_o abstract_a from_o the_o surface_n of_o the_o earth_n all_o vapour_n expiration_n fume_n and_o emanation_n of_o subtle_a body_n from_o water_n and_o other_o substance_n which_o ascend_v descend_v and_o everywhere_o float_v up_o and_o down_o in_o the_o atmosphere_n nothing_o can_v remain_v about_o the_o same_o but_o a_o empty_a space_n but_o also_o fire_n itself_o which_o have_v its_o original_n likewise_o from_o terrestrial_a matter_n as_o wood_n oil_n fat_a sulphur_n and_o other_o unctuous_a and_o combustible_a substance_n because_o all_o these_o be_v body_n which_o as_o part_n of_o itself_o the_o earth_n contain_v and_o hold_v together_o not_o permit_v any_o of_o they_o to_o be_v avell_v from_o its_o orb_n but_o by_o some_o force_n that_o exceed_v its_o retentive_a power_n and_o when_o that_o avellent_fw-la force_n cease_v it_o sudden_o retract_v they_o again_o to_o itself_o and_o insomuch_o as_o two_o body_n can_v coexi_v in_o one_o and_o the_o same_o place_n at_o once_o therefore_o come_v it_o to_o pass_v that_o many_o bodieâ—_n be_v at_o once_o retract_v towards_o the_o earth_n the_o more_o terrene_a be_v bring_v near_o to_o the_o surface_n thereof_o extrude_a and_o so_o succeed_a in_o to_o the_o room_n of_o the_o less_o terrene_a whence_o the_o near_o adduce_v and_o extrude_a body_n be_v account_v heavy_a and_o the_o extrude_v and_o far_o remove_v be_v account_v light_n magnetical_a second_o that_o the_o earth_n be_v natural_o endow_v with_o a_o certain_a magnetical_a virtue_n by_o which_o perpetual_o diffuse_v in_o round_a it_o contain_v its_o part_n in_o cohaerence_n and_o reduce_v those_o which_o be_v separate_v from_o itself_o after_o the_o same_o manner_n as_o a_o loadstone_n hold_v its_o own_o part_n together_o and_o attract_v iron_n which_o be_v also_o a_o magnetic_a production_n as_o gilbert_n the_o magnet_n lib._n 1._o cap._n 16._o from_o the_o observation_n of_o miner_n and_o other_o solid_a reason_n have_v confirm_v to_o itself_o and_o retract_v it_o after_o divulsion_n or_o separation_n we_o say_v all_o this_o may_v be_v argue_v from_o hence_o that_o the_o whole_a globe_n of_o the_o earth_n seem_v to_o be_v nothing_o but_o one_o grand_a magnet_n 1_o because_o a_o loadstone_n tornate_v into_o a_o sphere_n be_v more_o than_o analogical_o only_a a_o little_a earth_n be_v therefore_o nickname_v by_o gilbert_n the_o magnet_n lib._n 1._o cap._n 3_o 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d terella_n insomuch_o as_o the_o one_o so_o also_o have_v the_o other_o its_o pole_n its_o axis_n aequator_fw-la meridian_n parallel_n 2_o except_v only_o some_o part_n which_o have_v suffer_v a_o alteration_n and_o diminution_n if_o not_o a_o total_a amission_n of_o virtue_n in_o the_o exterior_n of_o the_o earth_n all_o part_n thereof_o discover_v some_o magnetic_a impraegnation_n some_o more_o vigorous_a and_o manifest_a as_o the_o loadstone_n and_o iron_n other_o more_o languid_a and_o obscure_a as_o white_a clay_n brick_n etc._n etc._n whereupon_o gilbert_n erect_v his_o conjectural_a judgement_n that_o the_o whole_a globe_n terrestrial_a be_v compose_v of_o two_o general_a part_n the_o shell_n and_o kernel_n the_o shell_n not_o extend_v itself_o many_o hundred_o fathom_n deep_a which_o be_v very_o small_a comparative_o to_o the_o vastness_n of_o its_o diametre_fw-la amount_v to_o 6872_o mile_n italian_a measure_n and_o all_o the_o rest_n or_o kernel_n be_v one_o continue_a loadstone_n substantial_o 3._o the_o loadstone_n always_o convert_v those_o part_n of_o itself_o towards_o the_o pole_n which_o respect_v they_o in_o its_o mineral_n bed_n or_o while_o it_o remain_v unite_v to_o the_o earth_n all_o which_o be_v no_o contemptible_a argument_n of_o our_o thesis_n that_o the_o whole_a earth_n be_v endow_v with_o a_o magnetic_a faculty_n in_o order_n to_o the_o conservation_n of_o its_o integrity_n whether_o the_o entrail_n of_o our_o common_a mother_n and_o nurse_n earth_n the_o earth_n be_v as_o gilbert_n will_v persuade_v we_o one_o great_a loadstone_n substantial_o be_v not_o more_o impossible_a
power_n and_o break_v off_o the_o magnetic_a line_n it_o can_v never_o be_v avell_v and_o amove_v from_o the_o earth_n and_o hence_o be_v it_o that_o by_o how_o much_o the_o great_a force_n be_v impress_v upon_o a_o stone_n at_o its_o projection_n upward_o by_o so_o many_o more_o degree_n of_o excess_n do_v that_o impress_v force_n transcend_v the_o force_n of_o the_o retentive_a magnetic_a line_n and_o consequent_o to_o so_o much_o a_o great_a altitude_n be_v the_o stone_n mount_v up_o in_o the_o aer_fw-la and_o è_fw-la contra_fw-la which_o be_v also_o the_o reason_n why_o the_o impress_v force_n be_v most_o vigorous_a in_o the_o first_o degree_n of_o the_o stone_n ascent_n do_v carry_v it_o the_o most_o vehement_o in_o the_o beginning_n because_o it_o be_v not_o then_o refract_v but_o afterward_o the_o stone_n move_v slow_a and_o slow_a because_o in_o every_o degree_n of_o ascension_n it_o lose_v a_o degree_n of_o the_o impress_v force_n until_o at_o length_n the_o same_o be_v so_o diminish_v as_o to_o come_v to_o a_o aequipondium_fw-la with_o the_o contrary_a force_n of_o the_o magnetic_a ray_n of_o the_o earth_n detract_n it_o downward_o last_o from_o hence_o be_v it_o thereof_o that_o the_o perpendicular_a delapse_n of_o most_o body_n though_o of_o far_o different_a weight_n be_v observe_v to_o be_v aequivelox_n contrary_a to_o that_o axiom_n of_o aristotle_n 2._o de_fw-fr caelum_fw-la text_n 46_o quo_fw-la majus_fw-la fuerit_fw-la corpus_fw-la eo_fw-la velocius_fw-la fertur_fw-la and_o text_n 77._o parvum_fw-la terrae_fw-la particulum_fw-la si_fw-la elevatu_fw-la dimittatur_fw-la ferri_fw-la deorsum_fw-la quo_fw-la major_n fuerit_fw-la velocius_fw-la moveri_fw-la upon_o which_o the_o aristotelean_n have_v ground_v this_o erroneous_a rule_n velocitates_fw-la gravium_fw-la descendentium_fw-la habere_fw-la inter_fw-la se_fw-la eandem_fw-la proportionem_fw-la quam_fw-la gravitates_fw-la ipsorum_fw-la that_o the_o velocity_n of_o heavy_a body_n fall_v downward_o have_v the_o same_o proportion_n one_o to_o another_o as_o their_o gravity_n have_v and_o the_o reason_n of_o this_o aequivelocity_n of_o unequal_a weight_n seem_v to_o be_v this_o that_o of_o two_o bullet_n the_o one_o of_o only_a a_o ounce_n the_o other_o of_o a_o hundred_o pound_n weight_n drop_v from_o the_o battlement_n of_o a_o high_a tower_n at_o the_o same_o instant_n though_o the_o great_a bullet_n be_v attract_v by_o more_o magnetic_a line_n deradiate_a from_o the_o earth_n yet_o have_v it_o more_o particle_n to_o be_v attract_v than_o the_o lesser_a so_o that_o there_o be_v a_o certain_a commensuration_n betwixt_o the_o force_n attractive_a and_o the_o quantity_n of_o matter_n attract_v on_o either_o part_n the_o force_n must_v be_v such_o as_o suffice_v to_o the_o performance_n of_o the_o motion_n of_o either_o in_o the_o same_o space_n of_o time_n and_o consequent_o both_o the_o bullet_n must_v descend_v with_o equal_a velocity_n and_o arrive_v at_o the_o surface_n of_o the_o earth_n in_o one_o and_o the_o same_o moment_n all_o which_o that_o lynceus_n galileo_n well_o understand_v when_o in_o the_o person_n of_o salviatus_n desire_v to_o calculate_v the_o time_n in_o which_o a_o bullet_n may_v be_v fall_v from_o the_o concave_n of_o the_o moon_n to_o our_o earth_n and_o sagredus_fw-la have_v say_v thus_o to_o he_o sumamus_fw-la igitur_fw-la globum_fw-la determinati_fw-la with_o the_o great_a body_n or_o globe_n thereof_o yet_o be_v it_o not_o congregative_a of_o the_o whole_a globe_n to_o any_o thing_n else_o as_o if_o the_o globe_n of_o the_o earth_n be_v to_o be_v unite_v to_o the_o moon_n or_o any_o other_o orb_n in_o the_o world_n nor_o can_v it_o be_v affirm_v that_o gravity_n or_o this_o virtue_n to_o motion_n direct_v be_v concede_v to_o the_o terraqueous_a orb_n to_o the_o end_n it_o shall_v at_o the_o creation_n carry_v itself_o to_o that_o place_n which_o be_v low_a in_o the_o universe_n or_o be_v there_o posit_v constant_o retain_v itself_o therein_o since_o in_o the_o universe_n be_v neither_o high_a nor_o low_a place_n but_o only_o respective_o to_o the_o site_n of_o a_o animal_n and_o chief_o of_o man_n who_o head_n be_v account_v the_o high_a and_o foot_n the_o low_a part_n in_o the_o same_o manner_n as_o there_o be_v no_o right_n nor_o leave_v side_n in_o nature_n but_o comparative_o to_o the_o site_n of_o the_o part_n in_o man_n body_n and_o in_o reference_n to_o the_o heaven_n for_o those_o laterality_n be_v not_o determine_v by_o any_o general_a and_o certain_a standard_n in_o nature_n but_o various_o assign_v according_a to_o our_o imagination_n the_o hebrew_n chaldean_n and_o persian_n confront_v the_o sun_n at_o his_o arise_v in_o the_o east_n place_v the_o right_a side_n of_o the_o world_n in_o the_o south_n as_o likewise_o do_v all_o the_o roman_a soothsayer_n when_o they_o take_v their_o augury_n the_o philosopher_n take_v that_o to_o be_v the_o east_n from_o whence_o the_o heaven_n begin_v their_o circumgyration_n and_o so_o assign_v also_o the_o right_a hand_n to_o the_o south_n the_o astronomer_n regard_v chief_o the_o south_n and_o meridian_n sun_n account_n that_o the_o dextrous_a part_n of_o heaven_n which_o respect_v his_o right_a hand_n and_o that_o be_v the_o west_n and_o poet_n differ_v from_o all_o the_o rest_n turn_v their_o face_n to_o the_o west_n and_o so_o assign_v the_o term_n of_o right_a to_o the_o north_n for_o otherwise_o ovid_n must_v be_v guilty_a of_o a_o gross_a mistake_n in_o that_o verse_n utque_fw-la dvae_fw-la dextrá_fw-fr zonae_fw-la totidemque_fw-la sinistrâ_fw-la hence_o be_v it_o that_o as_o the_o east_n can_v be_v the_o right_a side_n of_o the_o world_n unless_o to_o he_o who_o face_v the_o north_n so_o be_v the_o vertical_a point_n of_o the_o world_n not_o to_o be_v account_v the_o high_a part_n of_o the_o universe_n but_o only_o as_o it_o respect_v the_o head_n of_o a_o man_n stand_v on_o any_o part_n of_o the_o earth_n because_o if_o the_o same_o man_n travail_n to_o the_o antipode_n that_o which_o be_v before_o the_o high_a will_v then_o be_v the_o low_a part_n of_o the_o world_n this_o consider_v we_o must_v praefer_fw-la that_o solid_a opinion_n of_o plato_n that_o in_o the_o world_n there_o be_v a_o extreme_a and_o a_o middle_a place_n but_o no_o high_a and_o low_a to_o that_o mere_o petitionary_a one_o of_o aristotle_n that_o all_o body_n tend_v towards_o the_o centre_n of_o the_o earth_n as_o to_o the_o low_a place_n in_o the_o universe_n how_o say_v the_o offend_a peripatetic_a world_n the_o mere_o petitionary_a opinion_n of_o aristotle_n why_o do_v not_o all_o man_n admit_v that_o to_o be_v the_o low_a part_n of_o the_o world_n which_o be_v the_o middle_a or_o centre_n thereof_o and_o be_v not_o that_o the_o centre_n of_o the_o earth_n and_o our_o reply_n be_v that_o indeed_o we_o can_v admit_v neither_o 1_o because_o shall_v we_o allow_v the_o world_n to_o have_v a_o middle_a or_o centre_n yet_o be_v there_o no_o necessity_n that_o therefore_o we_o shall_v concede_fw-la the_o centre_n to_o be_v the_o low_a place_n in_o the_o world_n no_o more_o than_o that_o the_o navel_n or_o central_n part_n of_o a_o man_n shall_v therefore_o be_v the_o low_a part_n for_o to_o speak_v like_o man_n who_o have_v not_o enslave_v their_o reason_n to_o praejudice_v what_o be_v oppose_v to_o the_o middle_a be_v not_o suprem_fw-la but_o extreme_a and_o high_a and_o low_a be_v opposite_a point_n in_o the_o same_o extreme_a so_o likewise_o in_o the_o terrestrial_a globe_n who_o middle_a part_n we_o account_v not_o the_o low_a but_o the_o contrary_a point_n in_o the_o sphere_n since_o otherwise_o we_o must_v grant_v the_o earth_n to_o have_v a_o double_a infinity_o one_o in_o regard_n of_o its_o centre_n the_o other_o in_o respect_n of_o the_o extreme_a point_n of_o itâ—_n 〈◊〉_d according_a to_o which_o the_o antipode_n be_v low_a to_o we_o and_o we_o 〈◊〉_d to_o they_o 2_o whâ—_n 〈◊〉_d praetend_v to_o demonstrate_v that_o there_o be_v a_o extreme_a in_o the_o universe_n 〈…〉_z â—here_o be_v â—o_o determine_v wherâ—â—nd_n whâ—t_v it_o be_v â—nd_v upon_o consequence_n 〈◊〉_d the_o universe_n have_v anâ—_n centre_n and_o wherâ—_n that_o centre_n be_v it_o be_v moâ—â—â—han_n galileo_n dare_v as_o appear_v bochat_o his_o modest_a confession_n nâ—scimus_fw-la 〈…〉_z ubi_fw-la sit_fw-la universi_fw-la centrum_fw-la nâ—qâ—â—_n a_o siâ—â—_n quodque_fw-la si_fw-la maxim_n dâ—tur_fw-la aliud_fw-la 〈…〉_z nisi_fw-la punâ—tum_fw-la imaginariâ—m_fw-la adeoque_fw-la nihilum_fw-la omni_fw-la faculâ—ate_fw-la 〈…〉_z 〈◊〉_d cosmici_fw-la dialog_n 1_o pâ—g_n 22_o beside_o we_o see_v iâ—_n to_o be_v anâ—â—â—on_v very_o good_a groundâ—_n dâ—â—putâ—â—â—mongst_a the_o most_o curious_a anâ—_n learnâ—â—_n 〈◊〉_d oâ—â—he_a world_n whether_o the_o â—â—xt_a starâ—_n be_v move_v about_o the_o earth_n or_o th'earth_n by_o a_o diurnal_a motion_n upon_o itâ—_n own_o aâ—is_n whether_o the_o â—ixâ—_n star_n 〈…〉_z one_o and_o the_o same_o concave_a superfiâ—â—_n or_o rathâ—â—_n as_o
they_o make_v their_o consistence_n more_o compact_a and_o somewhat_o rigid_a as_o in_o ice_n snow_n haile_o hoar-frost_n etc._n etc._n the_o consignation_n of_o a_o tetrahedical_n figure_n to_o frigorifick_a atom_n appear_v thus_o eminent_o verisimilous_a aer_fw-la to_o the_o full_a explanation_n of_o the_o nature_n of_o cold_a it_o remain_v only_o that_o we_o decide_v that_o notable_a controversy_n which_o so_o much_o perplex_v many_o of_o the_o ancient_n viz._n whether_o cold_a be_v a_o elementary_a quality_n or_o more_o plain_o whether_o or_o no_o the_o principality_n of_o cold_a belong_v to_o any_o one_o of_o the_o four_o vulgar_a element_n and_o so_o whether_o aer_fw-la or_o water_n or_o earth_n may_v not_o be_v conceive_v to_o be_v primum_fw-la frigidum_fw-la as_o rightful_o as_o fire_n be_v say_v to_o be_v primum_fw-la calidum_fw-la especial_o since_o it_o be_v well_o know_v that_o the_o stoic_n impute_v the_o principality_n of_o cold_a to_o the_o aer_fw-la empedocles_n to_o water_n to_o who_o aristotle_n plain_o assent_v though_o he_o sometime_o forget_v himself_o and_o affirm_v that_o no_o humour_n be_v without_o heat_n as_o in_o 5._o the_o generate_v animal_n cap._n â—_o and_o plutarch_n to_o earth_n as_o we_o have_v learn_v from_o himself_o lib._n de_fw-la frigore_fw-la primigenio_fw-la to_o determine_v this_o antique_a dispute_n therefore_o we_o first_o observe_v that_o it_o arise_v chief_o from_o a_o petitionary_a principle_n for_o it_o appear_v that_o all_o philosopher_n who_o engage_v therein_o take_v it_o for_o grant_v that_o the_o quality_n of_o heat_n be_v eminent_o inhaerent_a in_o fire_n the_o chief_a of_o the_o 4_o principal_a or_o elementary_a substance_n and_o thereupon_o infer_v that_o the_o contrary_a quality_n cold_a aught_o in_o like_a manner_n to_o have_v its_o principal_a residence_n in_o one_o of_o the_o other_o 3_o when_o introth_o they_o ought_v first_o to_o have_v prove_v that_o there_o be_v such_o a_o thing_n as_o a_o element_n of_o fire_n in_o the_o universe_n which_o be_v more_o than_o any_o logic_n can_v hope_v since_o the_o sphere_n of_o fire_n which_o they_o suppose_v to_o possess_v all_o that_o vast_a space_n between_o the_o convex_a of_o the_o sphere_n of_o aer_fw-la and_o the_o concave_n of_o that_o of_o the_o moon_n be_v a_o mere_a chimaera_n as_o we_o have_v former_o intimate_v and_o helmont_n have_v clear_o commonstrate_v in_o cap._n de_fw-fr aere_fw-la and_o second_o we_o affirm_v that_o as_o the_o high_a degree_n of_o heat_n be_v not_o just_o attributary_a to_o any_o one_o body_n more_o than_o other_o or_o by_o way_n of_o singular_a eminency_n for_o the_o sphere_n of_o fire_n fail_v what_o other_o can_v be_v substitute_v in_o the_o room_n thereof_o but_o to_o sundry_a special_a body_n which_o be_v capable_a of_o exciting_a or_o conceive_v heat_n in_o the_o superlative_a degree_n so_o likewise_o though_o we_o shall_v concede_fw-la that_o there_o be_v 3_o principal_a body_n in_o nature_n namely_o 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various_o affect_v it_o in_o it_o superficial_a or_o exterior_a part_n and_o so_o it_o can_v be_v discern_v that_o its_o external_n part_n be_v endow_v with_o one_o of_o these_o opposite_a quality_n more_o than_o the_o other_o and_o since_o we_o can_v but_o observe_v that_o there_o be_v many_o great_a and_o durable_a subterraneous_a fire_n burn_v in_o and_o many_o fervid_n and_o sulphlureous_a exlation_n frequent_o emit_v and_o more_o hot_a spring_n of_o mineral_n water_n perpetual_o issue_v from_o its_o interior_n part_n or_o bowel_n and_o so_o it_o be_v of_o necessity_n that_o vast_a seminary_n of_o igneous_a atom_n be_v include_v in_o the_o entrail_n thereof_o we_o say_v consider_v these_o thing_n we_o can_v deny_v but_o that_o the_o earth_n do_v contain_v as_o many_o particle_n of_o heat_n or_o calorifick_a atom_n both_o without_o and_o within_o as_o it_o do_v of_o seed_n of_o cold_a or_o frigorifick_a atom_n if_o not_o more_o and_o upon_o consequence_n that_o it_o can_v be_v primum_fw-la frigidum_fw-la as_o plutarch_n and_o all_o his_o sectator_n have_v dream_v what_o then_o shall_v we_o conclude_v antithetical_o and_o conceive_v that_o the_o globe_n of_o the_o earth_n be_v therefore_o essential_o rather_o hot_a than_o cold_a true_o no_o because_o experience_n demonstrate_v that_o the_o earth_n do_v belch_v forth_o cold_a exhalation_n and_o congeal_a blast_n as_o well_o as_o hot_a fume_n and_o more_o frequent_o witness_v the_o northwind_n which_o be_v so_o cold_a that_o it_o refrigerate_v the_o aer_fw-la even_o in_o the_o midst_n of_o summer_n when_o the_o river_n be_v exhaust_v by_o the_o fervour_n of_o the_o sun_n to_o which_o elihu_n one_o of_o job_n sorry_a comforter_n seem_v to_o have_v allude_v when_o he_o say_v that_o cold_a come_v out_o of_o the_o north_n and_o the_o whirlwind_n out_o of_o the_o south_n all_o therefore_o we_o dare_v determine_v in_o this_o difficult_a argument_n the_o decision_n whereof_o do_v chief_o depend_v upon_o experiment_n of_o vast_a labour_n and_o cost_n be_v only_o thus_o much_o that_o the_o earth_n which_o be_v now_o hot_a now_o cold_a in_o its_o extreme_a or_o superficial_a part_n may_v as_o to_o its_o internal_a or_o profound_a part_n be_v as_o reasonable_o account_v to_o contain_v various_a seminary_n of_o heat_n as_o of_o cold_a and_o that_o the_o principal_a seed_n of_o cold_a or_o such_o as_o chief_o consist_v of_o frigorifick_a atom_n do_v convene_v into_o halinitre_n and_o other_o concretion_n of_o nature_n retain_v thereto_o and_o our_o reason_n be_v that_o halinitre_n be_v no_o soon_o dissolve_v in_o water_n than_o it_o congeal_v the_o same_o into_o perfect_a ice_n and_o strong_o refrigerate_v all_o body_n that_o it_o touch_v insomuch_o that_o we_o may_v not_o only_o conclude_v that_o of_o all_o concretion_n in_o nature_n at_o least_o that_o we_o have_v discover_v none_o be_v so_o plentiful_o fraught_v with_o the_o atom_n or_o seed_n of_o cold_a as_o halinitre_n but_o also_o adventure_v to_o answer_v that_o problem_n propose_v to_o job_n out_o of_o who_o womb_n come_v the_o ice_n and_o the_o hoary_a frost_n of_o heaven_n who_o have_v gendr_v it_o by_o say_n that_o all_o our_o freeze_a and_o extreme_a cold_a wind_n seem_v to_o be_v only_o copious_a exhalation_n of_o halinitre_n dissolve_v in_o the_o bowel_n of_o the_o earth_n or_o consist_v of_o such_o frigorifick_a atom_n as_o compose_v halinitre_n and_o this_o because_o of_o the_o identity_n of_o their_o effect_n for_o the_o tramontane_n wind_n the_o cold_a of_o all_o wind_n as_o fabricius_n paduanus_n in_o his_o exquisite_a book_n de_fw-fr ventis_fw-la copious_o prove_v which_o the_o italian_n call_v chirocco_n can_v pretend_v to_o no_o natural_a effect_n in_o which_o halinitre_n may_v not_o just_o rival_n it_o long_o may_v we_o dwell_v upon_o this_o not_o more_o rare_a than_o delightful_a subject_n but_o beside_o that_o it_o deserve_v a_o profess_a disquisition_n apart_o by_o itself_o our_o speculation_n be_v limit_v and_o may_v not_o without_o indecency_n either_o digress_v from_o their_o proper_a theme_n or_o transgress_v the_o strict_a law_n of_o method_n may_v it_o suffice_v therefore_o in_o present_a that_o we_o have_v make_v it_o justifiable_a to_o conceive_v that_o the_o earth_n contain_v many_o such_o particle_n or_o atom_n whether_o such_o as_o pertain_v to_o the_o composition_n of_o halinitre_n or_o of_o any_o other_o kind_a whatever_n upon_o the_o exsilition_n of_o which_o the_o body_n contain_v they_o may_v be_v say_v to_o become_v cold_a or_o pass_v from_o potential_a to_o actual_a cold_n and_o upon_o the_o insinuation_n of_o which_o into_o aer_fw-la water_n earth_n stones_n wood_n flesh_n or_o any_o other_o terrene_a concretion_n whatever_o cold_a be_v introduce_v into_o they_o and_o they_o may_v be_v say_v to_o be_v frigefy_v or_o make_v cold._n second_o as_o for_o water_n that_o the_o pretext_n thereof_o to_o the_o prerogative_n of_o essential_a frigidity_n be_v also_o fraudulent_a and_o inconsistent_a
it_o be_v uncapable_a of_o that_o exquisite_a smoothness_n in_o the_o surface_n which_o may_v be_v obtain_v by_o steel_n therefore_o can_v it_o not_o touch_v iron_n so_o exquisite_o or_o in_o so_o many_o point_n as_o steel_n may_v and_o consequent_o not_o invade_v it_o with_o so_o many_o direct_a and_o unite_a ray_n but_o steel_n be_v of_o a_o more_o simple_a substance_n and_o close_a contexture_n may_v in_o all_o its_o substance_n be_v imbue_v with_o the_o magnetic_a virtue_n and_o be_v polish_a touch_v a_o iron_n to_o which_o it_o be_v admove_v with_o more_o part_n and_o invade_v it_o with_o more_o dense_n and_o unite_a ray_n for_o those_o indirect_a ray_n which_o otherwise_o the_o loadstone_n will_v diffuse_v scatter_o through_o the_o medium_fw-la in_o respect_n of_o the_o various_a inequality_n of_o it_o superfice_n and_o multitude_n of_o small_a pore_n intercept_v among_o its_o particle_n the_o steel_n do_v recollect_v unite_v and_o transmit_v to_o the_o iron_n admove_v and_o thereby_o more_o strong_o embrace_v and_o detain_v it_o we_o say_v to_o iron_n admove_v for_o though_o the_o retentive_a virtue_n of_o a_o loadstone_n arm_v with_o steel_n be_v by_o many_o degree_n strong_a yet_o be_v its_o attractive_a virtue_n by_o some_o degree_n weak_a than_o that_o of_o a_o unarmed_a loadstone_n i._n e._n it_o do_v not_o diffuse_v its_o attractive_a virtue_n half_o so_o far_o and_o a_o sheet_n of_o the_o fine_a venice_n paper_n interpose_v betwixt_o a_o arm_a stone_n and_o iron_n do_v impede_fw-la it_o attraction_n a_o manifest_a argument_n that_o the_o fortification_n be_v determine_v only_o to_o contact_n this_o we_o confess_v mersennus_n flat_o deny_v and_o upon_o his_o own_o observation_n but_o till_o our_o reader_n shall_v meet_v with_o such_o a_o stone_n as_o mersennus_n use_v we_o advise_v he_o not_o to_o desert_v the_o common_a experience_n of_o the_o impediment_n of_o the_o attraction_n of_o iron_n by_o a_o arm_a loadstone_n by_o paper_n interpose_v 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magnetical_a that_o may_v not_o convenient_o be_v refer_v to_o one_o or_o more_o of_o they_o and_o consign_v a_o probable_a reason_n to_o each_o the_o only_a memorable_a difficulty_n that_o remain_v concern_v the_o attractive_a virtue_n of_o magnetique_n be_v why_o a_o small_a or_o weak_a loadstone_n do_v snatch_v away_o a_o iron_n from_o a_o great_a or_o more_o potent_a one_o but_o as_o the_o incomparable_a kircher_n have_v subte_o observe_v a_o small_a or_o weak_a loadstone_n do_v remove_v a_o needle_n from_o a_o great_a and_o potent_a one_o while_o itself_o remain_v within_o the_o sphere_n of_o the_o great_a or_o strong_a one_o activity_n because_o the_o virtue_n of_o the_o small_a or_o weak_a stone_n be_v corroborate_v by_o the_o accession_n of_o that_o of_o the_o great_a or_o strong_a which_o be_v demonstrable_a from_o hence_o that_o if_o the_o needle_n be_v so_o long_o that_o its_o extreme_n reach_v beyond_o the_o orb_n of_o the_o great_a lodestone_n activity_n then_o can_v a_o less_o or_o less_o potent_a one_o remove_v it_o away_o and_o elevate_v it_o and_o in_o case_n one_o of_o the_o extreme_n be_v somewhat_o too_o near_o to_o either_o pole_n of_o the_o great_a loadstone_n then_o be_v the_o less_o stone_n much_o less_o able_a to_o subtract_v the_o needle_n than_o in_o the_o former_a case_n because_o so_o the_o virtue_n of_o the_o great_a loadstone_n be_v augment_v by_o the_o addition_n of_o that_o of_o the_o less_o loadstone_n and_o hence_o by_o way_n of_o corollary_n we_o observe_v that_o the_o abduction_n of_o a_o piece_n of_o iron_n from_o the_o earth_n by_o a_o loadstone_n be_v so_o far_o from_o be_v a_o good_a argument_n against_o the_o earth_n be_v magnetic_a or_o one_o vast_a loadstone_n that_o it_o rather_o make_v for_o it_o because_o the_o loadstone_n be_v apply_v to_o the_o iron_n and_o operate_n within_o the_o sphere_n of_o the_o earth_n virtue_n be_v so_o corroborate_v thereby_o that_o it_o abduce_v the_o iron_n from_o it_o by_o the_o same_o reason_n that_o a_o less_o loadstone_n snatch_v a_o needle_n from_o a_o great_a one_o and_o thus_o much_o concern_v the_o attractive_a faculty_n of_o the_o loadstone_n both_o according_a to_o the_o most_o considerable_a doctrine_n of_o the_o ancient_n and_o the_o more_o exact_a theory_n of_o the_o modern_n sect_n ii_o to_o inquire_v the_o reason_n therefore_o of_o the_o other_o general_a propriepriety_n of_o magnetique_n section_n their_o direction_n or_o conversion_n of_o their_o pole_n â—o_o north_n and_o south_n be_v all_o the_o remainder_n of_o our_o present_a design_n which_o that_o we_o may_v accomplish_v with_o as_o much_o plainness_n and_o brevity_n as_o the_o quality_n of_o the_o argument_n will_v admit_v of_o we_o shall_v observe_v the_o same_o advantageous_a method_n of_o disquisition_n as_o we_o have_v do_v in_o the_o former_a touch_v the_o cause_n and_o way_n of_o magnetic_a attraction_n reduce_v all_o the_o observation_n of_o the_o modern_n of_o the_o direction_n declination_n and_o inclination_n of_o the_o loadstone_n and_o other_o magnetical_a body_n to_o certain_a head_n and_o dispose_v they_o according_a to_o their_o order_n of_o subalternate_a dependency_n iron_n the_o first_o observable_a be_v that_o the_o loadstone_n and_o iron_n be_v twin_n in_o their_o generation_n and_o of_o so_o great_a affinity_n in_o their_o nature_n that_o dr._n gilbert_n may_v just_o say_v that_o a_o loadstone_n be_v iron_n crude_a and_o iron_n a_o loadstone_n excoct_v for_o they_o be_v for_o the_o most_o part_n find_v lodge_v together_o in_o the_o same_o subterraneon_n bed_n as_o the_o experience_n of_o all_o such_o as_o be_v conversant_a about_o iron_n mine_n in_o germany_n italy_n france_n england_n and_o most_o other_o country_n do_v every_o day_n demonstrate_v and_o that_o iâ—_n the_o most_o probable_a cause_n that_o can_v be_v give_v why_o lodestone_n general_o be_v so_o much_o the_o more_o vigorous_a and_o perfect_a by_o how_o much_o deepâ—â—_n in_o the_o vein_n of_o iron_n mine_n they_o be_v dig_v there_o be_v indeed_o a_o reâ—â—rt_n diffuse_v not_o only_o among_o the_o people_n but_o also_o some_o of_o the_o high_a foâ—â—_n of_o learned_a writer_n and_o chief_o derive_v from_o the_o authority_n of_o strabo_n that_o in_o the_o western_a ocean_n be_v certain_a vast_a magnetic_a â—ooks_n 〈◊〉_d draw_v ship_n that_o sail_v near_o they_o by_o reason_n of_o the_o iron_n 〈◊〉_d wherewith_o their_o rib_n and_o plank_n be_v fasten_v and_o hold_v together_o with_o irresistible_a violence_n and_o impetuosity_n split_v they_o in_o piece_n or_o extract_v the_o iron_n pinn_v carry_v they_o like_o arrow_n fly_v to_o a_o butt_n through_o the_o aer_fw-la but_o the_o light_n of_o navigation_n have_v long_o since_o discover_v this_o story_n to_o be_v as_o high_o romantique_a as_o the_o enchant_a castle_n of_o our_o knight_n errant_a or_o the_o most_o absurd_a of_o sir_n john_n mandevil_n fable_n and_o herein_o we_o may_v say_v of_o strabo_n as_o lucian_n of_o the_o indian_a history_n of_o ctesias_n the_o cnidian_a physician_n to_o artaxerxes_n king_n of_o persia_n scripsit_fw-la de_fw-la ijs_fw-la quae_fw-la nec_fw-la ipse_fw-la vidit_fw-la unquam_fw-la neque_fw-la ex_fw-la ullius_fw-la sermone_fw-la audivit_fw-la the_o second_o loadstone_n that_o the_o loadstone_n seem_v not_o only_o to_o have_v all_o the_o condition_n of_o the_o terrestrial_a globe_n but_o also_o to_o imitate_v the_o positional_a respect_n thereof_o conform_v itself_o exact_o unto_o it_o for_o as_o the_o terraqueous_a globe_n have_v two_o pole_n by_o which_o it_o own_v a_o respect_n to_o the_o pole_n of_o the_o heaven_n the_o one_o boreal_n the_o other_o austral_a so_o likewise_o have_v the_o loadstone_n two_o contrary_a pole_n always_o discoverable_a in_o the_o opposite_a part_n or_o extreme_n thereof_o especial_o if_o it_o be_v turn_v into_o a_o sphere_n and_o as_o the_o globe_n of_o the_o earth_n have_v a_o aequator_fw-la parallel_n and_o meridian_n so_o have_v the_o loadstone_n as_o may_v be_v demonstrate_v to_o the_o eye_n by_o apply_v a_o small_a steel_n
needle_n thereunto_o for_o at_o either_o of_o its_o pole_n the_o needle_n shall_v be_v erect_v perpendicular_o and_o lie_v in_o the_o same_o line_n with_o its_o axis_n but_o at_o any_o of_o the_o intermediate_v space_n or_o parallel_n it_o shall_v be_v neither_o plain_o erect_v nor_o plain_o lie_v along_o but_o observe_v a_o oblique_a situation_n and_o more_o or_o less_o oblique_a according_a to_o the_o variety_n of_o the_o parallel_n and_o at_o the_o middle_a interstice_n or_o aequator_fw-la it_o shall_v dispose_v itself_o in_o conformity_n to_o the_o ductus_fw-la of_o the_o meridian_n and_o fix_v in_o a_o position_n parallel_v to_o the_o axis_n of_o the_o loadstone_n that_o a_o loadstone_n do_v accommodate_v itself_o exact_o to_o the_o earth_n as_o a_o needle_n do_v accommodate_v itself_o to_o the_o loadstone_n be_v evince_v from_o this_o easy_a experiment_n if_o you_o suspend_v a_o loadstone_n who_o pole_n you_o have_v former_o discover_v and_o note_v with_o the_o character_n n._n s._n in_o calm_a aer_fw-la or_o set_v it_o float_v at_o liberty_n in_o a_o vessel_n of_o quicksilver_n or_o a_o small_a skiff_n of_o cork_n swim_v upon_o water_n that_o so_o it_o may_v free_o perform_v the_o office_n of_o its_o nature_n you_o shall_v observe_v it_o continual_o to_o move_v itself_o from_o side_n to_o side_n and_o suffer_v alternate_a vibration_n or_o access_n and_o recess_n till_o it_o have_v so_o dispose_v itself_o according_a to_o the_o meridian_n as_o that_o one_o of_o its_o pole_n viz._n that_o mark_v with_o n._n shall_v point_n to_o the_o north_n and_o the_o other_o upon_o which_o s._n be_v inscribe_v to_o the_o south_n nor_o that_o only_a but_o forasmuch_o as_o england_n be_v situate_a near_o the_o north_n of_o the_o earth_n and_o so_o have_v the_o north_n pole_n somewhat_o demerse_v or_o depress_v below_o the_o horizon_n near_o than_o the_o south_n pole_n of_o the_o earth_n therefore_o do_v not_o the_o loadstone_n keep_v up_o both_o its_o pole_n in_o a_o level_n or_o perfect_o horizontal_a position_n but_o depress_v that_o pole_n which_o affect_v the_o n_o somewhat_o below_o the_o plane_n of_o the_o horizon_n as_o much_o as_o it_o can_v direct_v the_o same_o to_o the_o n._n pole_n of_o the_o earth_n far_o be_v it_o be_v common_o observe_v that_o this_o depression_n some_o call_v it_o the_o declination_n other_o the_o inclination_n of_o the_o n._n pole_n of_o the_o loadstone_n or_o point_n of_o a_o excite_a needle_n be_v so_o much_o the_o great_a by_o how_o much_o near_o the_o stone_n or_o needle_n be_v bring_v to_o the_o boreal_a part_n of_o the_o earth_n so_o much_o less_o by_o how_o much_o near_o to_o the_o aequator_fw-la therefore_o may_v we_o conclude_v that_o a_o loadstone_n be_v remove_v in_o the_o same_o position_n of_o freedom_n from_o the_o aequator_fw-la by_o degree_n to_o each_o of_o the_o earth_n pole_n will_v more_v and_o more_o depress_v or_o decline_v its_o boreal_a pole_n by_o how_o much_o it_o shall_v come_v near_o and_o near_o to_o the_o boreal_a pole_n of_o the_o earth_n and_o on_o the_o otherside_n of_o the_o aequator_fw-la more_fw-it and_o more_o decline_v its_o austral_a pole_n to_o the_o austral_a pole_n of_o the_o earth_n by_o how_o much_o near_o it_o do_v approach_v the_o same_o nor_o can_v it_o lie_v with_o both_o pole_n above_o the_o horizon_n at_o once_o in_o any_o part_n of_o the_o earth_n but_o upon_o the_o aequator_fw-la and_o at_o either_o of_o the_o pole_n of_o the_o earth_n the_o axis_n of_o the_o stone_n will_v make_v one_o with_o the_o axis_n of_o the_o earth_n position_n the_o third_z that_o iron_n acquire_v a_o verticity_n not_o only_o from_o the_o touch_n or_o affriction_n of_o a_o loadstone_n but_o also_o from_o its_o mere_a situation_n in_o upon_z or_o above_o the_o earth_n in_o conformity_n to_o the_o pole_n thereof_o for_o all_o iron_n bar_n that_o have_v long_o remain_v in_o window_n grate_v etc._n etc._n in_o a_o position_n polary_n or_o north_n and_o south_n if_o you_o suspend_v they_o in_o aequilibrio_fw-la by_o line_n in_o the_o aer_fw-la so_o as_o they_o may_v move_v themselves_o free_o according_a to_o the_o inclination_n of_o their_o virtue_n receive_v from_o the_o earth_n will_v make_v several_a diadrom_n hither_o and_o thither_o and_o rest_v not_o until_o they_o have_v convert_v to_o the_o north_n that_o extreme_a which_o in_o their_o former_a diuturne_n position_n regard_v the_o north_n and_o that_o to_o the_o south_n which_o former_o respect_v the_o south_n and_o have_v recover_v this_o their_o cognation_n they_o shall_v fix_v in_o a_o meridional_a posture_n as_o exact_o as_o the_o loadstone_n itself_o or_o a_o magnetified_a needle_n to_o experiment_n this_o the_o most_o easy_a way_n be_v to_o offer_v at_o convenient_a distance_n a_o magnetic_a dial_n or_o mariner_n compass_n to_o the_o extremes_n of_o a_o iron_n bar_n that_o have_v long_o lie_v n_o and_o s_o for_o then_o may_v you_o soon_o observe_v the_o needle_n or_o versory_n free_o equilibrate_v therein_o to_o be_v draw_v in_o that_o point_n which_o respect_v the_o north_n by_o that_o extreme_a of_o the_o bar_n which_o be_v australize_v and_o on_o the_o contrary_a the_o south_n point_n of_o the_o needle_n to_o be_v draw_v by_o that_o extreme_a of_o the_o bar_n which_o be_v borealize_v this_o vertical_a impraegnation_n of_o iron_n mere_o by_o the_o earth_n be_v also_o evidence_v from_o hence_o that_o iron_n bar_n make_v red_a hot_a and_o then_o set_v to_o cool_v in_o a_o meridional_a position_n do_v acquire_v the_o like_a polary_a cognation_n and_o be_v either_o at_o liberty_n of_o conversion_n suspend_v by_o small_a chord_n in_o the_o aer_fw-la or_o set_v â—loating_v in_o small_a boat_n of_o cork_n or_o apply_v to_o the_o needle_n of_o a_o pixis_fw-la nautica_fw-la immediate_o discover_v the_o same_o this_o being_n most_o manifest_a why_o may_v not_o our_o mariner_n in_o defect_n of_o a_o loadstone_n make_v a_o needle_n or_o fly_n for_o their_o chard_n of_o simple_a iron_n alone_o since_o if_o it_o have_v lie_v in_o a_o meridional_a situation_n above_o the_o earth_n or_o be_v extinguish_v according_a to_o the_o same_o law_n of_o position_n it_o will_v bear_v and_o demonstrate_v as_o strong_a a_o affection_n to_o the_o pole_n of_o the_o earth_n as_o a_o needle_n invigorate_v by_o a_o loadstone_n nor_o shall_v the_o depression_n or_o declination_n of_o the_o one_o in_o each_o degree_n of_o remove_n from_o the_o aequator_fw-la towards_o either_o pole_n be_v less_o or_o great_a than_o that_o of_o the_o other_o the_o four_o iron_n that_o insomuch_o as_o both_o the_o loadstone_n and_o iron_n hâ—ve_v so_o near_o a_o cognation_n to_o the_o earth_n and_o conformity_n of_o situation_n to_o the_o part_n of_o it_o nothing_o certain_o can_v seem_v more_o consentaneous_a than_o that_o they_o both_o hold_v one_o and_o the_o same_o nature_n in_o common_a with_o the_o earth_n at_o leâ—st_n with_o the_o internal_a part_n or_o kernel_n thereoâ—_n but_o yet_o with_o thâ—s_n difference_n that_o iron_n be_v a_o part_n of_o the_o earth_n very_o much_o alter_v from_o its_o orginall_a constitution_n by_o the_o activity_n of_o its_o seminal_a principle_n can_v therefore_o so_o easy_o manifest_v its_o extraction_n or_o prove_v itself_o to_o be_v the_o genuine_a production_n and_o part_n thereof_o without_o praecedent_a repurgation_n and_o excitation_n or_o freâ—h_a animation_n from_o the_o effluvium_n of_o the_o earth_n but_o a_o loadstone_n hauâ—ng_v not_o unâ—ergon_v the_o like_a mutation_n from_o concoction_n and_o so_o reâ—aining_v near_o ally_v to_o the_o earth_n do_v retain_v a_o more_o lively_a tâ—â—cture_n of_o its_o polary_a faculty_n and_o by_o the_o evidence_n of_o spontaneous_a dâ—â—â—ctâ—on_n demonstrate_v its_o verticity_n to_o be_v pure_o native_a and_o it_o 〈◊〉_d by_o consequence_n to_o be_v only_o a_o divide_a part_n or_o legitimate_a 〈◊〉_d of_o the_o earth_n further_o from_o hence_o that_o the_o loadstone_n anâ—_n the_o terrestrial_a globe_n have_v both_o one_o and_o the_o same_o power_n though_o in_o different_a proportion_n of_o impraegnate_a iron_n with_o a_o 〈◊〉_d â—â—â—â—ction_n impress_v one_o and_o the_o same_o faculty_n thereupon_o it_o be_v just_o inferrible_a that_o the_o loadstone_n not_o only_o in_o respect_n of_o â—ther_n condition_n wherein_o it_o resemble_v the_o earth_n but_o also_o and_o in_o chief_a of_o this_o noble_a efficacy_n of_o invigorate_n and_o renovate_a the_o 〈◊〉_d quality_n of_o iron_n may_v well_o be_v account_v as_o the_o fatâ—eâ—_n of_o magnetic_a philosophy_n dr._n gilbert_n have_v name_v it_o 〈◊〉_d terâ—â—lla_n the_o globe_n of_o earth_n in_o epitome_n and_o that_o the_o eâ—â—th_v itself_o may_v be_v repute_v ingens_fw-la magnes_fw-la a_o great_a loadstone_n though_o in_o truth_n the_o earth_n may_v challenge_v the_o title_n or_o a_o great_a 〈◊〉_d by_o another_o right_n though_o somewhat_o less_o evident_a and_o thâ—t_a iâ—_n its_o attraction_n
be_v not_o every_o way_n of_o apposition_n that_o will_v be_v convenient_a but_o only_o that_o when_o it_o be_v dispose_v in_o a_o direct_a line_n respondent_fw-la to_o the_o same_o ductus_fw-la or_o situation_n of_o its_o fibre_n according_a to_o which_o it_o be_v continue_v to_o the_o earth_n beâ—ore_o its_o separation_n nor_o be_v this_o mere_a conjecture_n but_o a_o truth_n as_o firm_a as_o the_o earth_n itself_o and_o as_o plain_a as_o sense_n can_v make_v it_o it_o be_v constant_o observe_v that_o what_o situation_n a_o loadstone_n have_v in_o its_o matrix_fw-la or_o mineral_n bed_n the_o very_a same_o it_o shall_v strong_o affect_v and_o strict_o observe_v ever_n after_o at_o least_o while_o it_o be_v a_o loadstone_n i._n e._n until_o time_n or_o fire_n have_v destroy_v its_o verticity_n and_o as_o for_o the_o use_v thereof_o it_o be_v so_o fruitful_a as_o to_o yield_v we_o the_o most_o probable_a reason_n in_o general_n for_o sundry_a the_o most_o obscure_a among_o all_o magnetical_a apparence_n friend_n 1_o forasmuch_o as_o the_o loadstone_n ever_o affect_v its_o native_a situation_n and_o that_o its_o northern_a part_n do_v while_o it_o remain_v in_o its_o matrix_fw-la adhaere_fw-la to_o the_o southern_a part_n of_o the_o same_o magnetic_a vein_n that_o lie_v more_o north_n and_o its_o southern_a part_n do_v adhaere_fw-la to_o the_o northern_a part_n of_o the_o magnetic_a vein_n that_o lie_v more_o south_n therefore_o be_v it_o that_o the_o north_n pole_n of_o a_o loadstone_n do_v never_o affect_v a_o union_n with_o the_o north_n pole_n of_o the_o earth_n nor_o its_o south_n pole_n direct_v to_o the_o south_n pole_n of_o the_o earth_n but_o quite_o contrary_a its_o north_n pole_n convert_v to_o the_o south_n and_o its_o south_n to_o the_o north._n so_o that_o whenever_o you_o observe_v a_o loadstone_n free_o swim_v in_o a_o boat_n of_o cork_n to_o convert_v or_o decline_v one_o of_o its_o pole_n to_o the_o north_n of_o the_o earth_n you_o may_v assure_v yourself_o that_o that_o be_v the_o south_n pole_n of_o the_o loadstone_n and_o è_fw-la contra_fw-la other_o 2_o from_o the_o same_o and_o no_o other_o cause_o be_v it_o also_o that_o when_o a_o magnet_n be_v dissect_v or_o break_v into_o two_o piece_n and_o so_o two_o new_a pole_n create_v in_o each_o piece_n the_o boreall_n pole_n of_o the_o one_o half_n shall_v never_o admit_v coition_n with_o the_o boreall_n pole_n of_o the_o other_o nor_o the_o australl_a extreme_a of_o the_o one_o fragment_n affect_v conjunction_n wâ—th_v the_o australl_a extreme_a of_o the_o the_o other_o but_o contrariwise_o the_o australl_a end_n shall_v septentrionate_v and_o the_o septentrionate_a australize_v the_o same_o also_o happen_v whenever_o â—ny_v two_o loadstone_n 〈◊〉_d apply_v each_o to_o other_o the_o cause_n be_v general_n viz._n the_o native_a 〈◊〉_d or_o grain_n of_o the_o magnetic_a fibres_n which_o be_v invert_v wheneâ—â—â—_n the_o boreall_n part_n of_o a_o loadstone_n be_v apply_v to_o the_o boreall_n paâ—t_v of_o the_o earth_n or_o of_o another_o loadstone_n or_o the_o meridional_a part_n of_o a_o loadstone_n be_v convert_v to_o the_o meridional_a part_n of_o the_o earth_n of_o another_o loadstone_n as_o the_o ductus_fw-la of_o the_o fibre_n in_o a_o shoot_n of_o a_o plant_n be_v invert_v when_o the_o upper_a extreme_a thereof_o be_v insert_v into_o the_o upper_a part_n of_o a_o sâ—oâ—k_n this_o consider_v when_o we_o observe_v the_o animate_v needle_n 〈…〉_z mariner_n compass_n free_o convert_v itself_o round_a upon_o the_o pin_n â—hereon_o it_o be_v aequilibrate_v that_o end_n which_o direct_v to_o the_o norâ—â—_n pole_n of_o the_o earth_n must_v be_v the_o south_n point_n of_o the_o needle_n and_o viceversal_o that_o must_v be_v the_o north_n cuspis_fw-la of_o the_o needle_n which_o conâ—rontetâ—_n the_o south_n of_o the_o earth_n and_o when_o present_a a_o loadstone_n to_o a_o magnetified_a versory_n that_o part_n of_o the_o loadstone_n must_v be_v the_o north_n pole_n to_o which_o the_o south_n cuspis_fw-la of_o the_o needle_n come_v and_o that_o to_o which_o the_o north_n point_n of_o the_o needle_n approach_v must_v be_v the_o south_n of_o the_o loadstone_n the_o same_o also_o may_v be_v conclude_v of_o the_o extreme_n of_o iron_n when_o a_o loadstone_n be_v apply_v unto_o they_o for_o that_o part_n of_o a_o iron_n bar_n which_o lay_v meridional_o have_v respect_v the_o north_n must_v have_v be_v spirit_v by_o the_o southern_a influence_n of_o the_o earth_n and_o è_fw-la contra_fw-la and_o among_o our_o fire_n iron_n the_o upper_a end_n must_v have_v imbibe_v the_o northern_a influence_n of_o the_o earth_n and_o the_o low_a the_o southern_a contrary_a to_o the_o assertion_n of_o some_o of_o our_o magnetical_a philosopher_n the_o nine_o the_o analogy_n of_o the_o earth_n to_o the_o loadstone_n figure_n and_o other_o magnetical_o inspire_v body_n be_v so_o great_a and_o the_o cause_n thereof_o so_o little_o obscure_a it_o may_v seem_v a_o justifiable_a inference_n that_o the_o terriestriall_a globe_n do_v inward_o consist_v of_o certain_a continue_a fibre_n run_v along_o from_o north_n to_o south_n or_o from_o south_n to_o north_n in_o one_o uninterrupted_a ductus_fw-la and_o consequent_o that_o since_o the_o middle_a fiber_n be_v as_o it_o be_v the_o axis_n who_o opposite_a extreme_n make_v the_o two_o pole_n in_o case_n the_o whole_a earth_n can_v be_v divide_v into_o two_o or_o more_o great_a part_n there_o will_v instant_o result_v in_o every_o part_n or_o division_n a_o special_a axis_n two_o special_a pole_n a_o special_a aequator_fw-la and_o all_o other_o condition_n as_o former_o in_o the_o whole_a globe_n so_o that_o the_o septentrional_a part_n of_o one_o piece_n will_v conjoin_v itself_o to_o the_o austrine_n part_n of_o another_o and_o the_o septentrional_a part_n reciprocal_o avert_v themselves_o each_o from_o other_o as_o the_o part_n of_o a_o loadstone_n and_o this_o we_o may_v understand_v to_o be_v that_o mighty_a and_o so_o long_o inquire_v cause_n why_o all_o the_o part_n of_o the_o terrestrial_a globe_n do_v so_o firm_o cohaere_v and_o conserve_v the_o primitive_a figure_n the_o cohaesion_n attractive_a virtue_n constant_a direction_n and_o spontaneous_a verticity_n of_o all_o its_o genuine_a part_n all_o who_o southern_a fibre_n do_v magnetical_o or_o individual_o conform_v and_o conjoin_v themselves_o to_o the_o northern_a and_o their_o northern_a to_o the_o southern_a be_v the_o necessary_a cause_n of_o that_o firmness_n and_o constancy_n of_o figure_n impossible_a we_o confess_v it_o be_v to_o obtain_v any_o ocular_a experiment_n of_o this_o constitution_n of_o the_o earth_n internal_a fibre_n the_o very_a cortex_fw-la of_o the_o earth_n extend_v some_o mile_n in_o profundity_n but_o yet_o we_o desume_v a_o reasonable_a conjecture_n thereof_o as_o well_o from_o the_o great_a similitude_n of_o effect_n wrought_v by_o the_o earth_n and_o other_o magnetick_n as_o the_o experience_n of_o miner_n who_o frequent_o observe_v and_o constant_o affirm_v that_o the_o vein_n of_o subterraneous_a rock_n from_o who_o chink_n they_o dig_v iron_n oar_n do_v always_o tend_v from_o south_n to_o north_n and_o that_o the_o vein_n of_o eminent_a rock_n which_o make_v the_o giant_n mountain_n upon_o the_o face_n of_o the_o earth_n have_v general_o the_o same_o direction_n and_o though_o there_o be_v some_o row_v or_o tract_n of_o mountain_n that_o run_v from_o east_n to_o west_n or_o be_v of_o oblique_a situation_n yet_o be_v there_o always_o some_o considerable_a intercisure_n among_o they_o from_o south_n to_o north_n so_o that_o that_o can_v be_v no_o sufficient_a argument_n that_o the_o interior_a fibres_fw-fr of_o the_o earth_n which_o be_v true_o and_o entire_o magnetical_a and_o subjacent_a under_o those_o mountainous_a rock_n do_v not_o lie_v in_o a_o meridional_a position_n or_o conform_v to_o the_o axis_n of_o the_o earth_n the_o ten_o that_o since_o the_o observation_n of_o miner_n ascertain_v we_o place_n that_o the_o range_v or_o tract_n of_o rock_n in_o the_o cortex_fw-la or_o accessible_a part_n of_o the_o terrestrial_a globe_n do_v for_o the_o most_o observe_v a_o praecise_o meridional_a situation_n and_o tend_v from_o south_n to_o north_n and_o sometime_o i._n e._n in_o some_o place_n deflect_v towards_o the_o east_n and_o west_n with_o less_o and_o great_a obliquity_n and_o that_o our_o reason_n may_v from_o thence_o and_o the_o similitude_n of_o the_o earth_n and_o loadstone_n natural_o extract_v a_o conjecture_n that_o the_o fibre_n of_o the_o earth_n kernel_n or_o inaccessible_a part_n though_o for_o the_o most_o they_o tend_v praecise_o from_o the_o south_n to_o the_o north_n may_v yet_o in_o many_o place_n more_o and_o lâ—ss_o deflect_v towards_o the_o east_n and_o west_n we_o need_v no_o long_o perplex_v ouâ—_n mind_n with_o inquire_v why_o all_o magnetique_n and_o especial_o the_o versory_a or_o needle_n of_o the_o seaman_n compass_n be_v horizontal_o
aequilibrate_v doâ—_n in_o some_o place_n point_v direct_o to_o the_o north_n and_o south_n and_o in_o other_o deflect_v towards_o the_o east_n and_o west_n with_o more_o and_o less_o of_o obliquity_n which_o navigator_n call_v for_o distinction_n of_o it_o from_o the_o depression_n or_o inclination_n former_o explicate_v the_o variation_n of_o the_o loadstone_n or_o needle_n from_o the_o mariner_n table_n though_o they_o be_v 〈◊〉_d of_o discord_n as_o to_o the_o degree_n of_o the_o needle_n deflection_n or_o variation_n from_o the_o true_a meridian_n in_o several_a part_n of_o the_o earth_n we_o learn_v that_o the_o needle_n do_v exact_o conform_v itself_o to_o the_o axis_n of_o its_o great_a â—â—â—pirer_n the_o earth_n without_o any_o sensible_a deflection_n at_o all_o in_o the_o island_n corvus_n one_o of_o the_o azore_n in_o the_o island_n of_o the_o trinity_n in_o the_o proâ—â—â—tory_n of_o the_o needle_n near_o the_o cape_n of_o good-hope_a in_o the_o 〈◊〉_d herculâ—um_n syllaeum_fw-la the_o thracian_a bosphorus_n the_o 〈…〉_z vienna_n and_o divers_a other_o place_n but_o in_o other_o 〈…〉_z england_n it_o 〈◊〉_d somewhat_o towards_o the_o eâ—st_n yet_o 〈…〉_z so_o thâ—t_a in_o some_o country_n its_o variation_n exceed_v not_o 1.2_o or_o â—_o degree_n at_o most_o and_o in_o other_o it_o amount_v to_o nâ—_n less_o than_o 40_o â—r_o 5â—_n again_o there_o be_v other_o meridians_fw-la in_o which_o the_o declination_n of_o the_o â—â—mpass_n be_v towards_o the_o west_n as_o frequent_o upon_o the_o oriental_a 〈◊〉_d of_o 〈◊〉_d northern_a america_n on_o the_o occidental_a coast_n of_o nova_n zâ—â—bâ—a_n a_o goa_n the_o eastern_a side_n of_o africa_n in_o our_o mediterrane_n at_o naples_n 〈◊〉_d sundry_a other_o place_n nay_o oftentimes_o in_o the_o same_o meridian_n and_o in_o 〈◊〉_d degree_n of_o latitude_n it_o have_v be_v observe_v that_o the_o needle_n 〈◊〉_d not_o vary_v at_o all_o and_o very_o both_o eastward_o and_o westward_o for_o though_o in_o the_o island_n corvus_n the_o declination_n be_v insensible_a where_o the_o latitude_n be_v of_o about_o 40_o degree_n yet_o on_o this_o side_n of_o it_o in_o the_o latitude_n of_o 20_o degree_n â—he_v declination_n amount_v to_o 12_o degree_n eastward_o and_o beyond_o it_o in_o the_o latitude_n of_o 46_o degree_n the_o declination_n towards_o the_o west_n arise_v to_o 8_o degree_n and_o far_o off_o in_o the_o latitude_n of_o 55_o the_o westward_o declination_n equal_n 24_o degree_n so_o also_o in_o the_o island_n eâ—ba_n at_o one_o promontoâ—â—_n the_o needle_n deviate_v towards_o the_o east_n onâ—y_v 5_o degree_n at_o another_o promâ—â—â—ory_n 8_o and_o at_o a_o three_o as_o high_a as_o 20._o which_o be_v due_o perpend_v â—oth_v soon_o detect_v the_o unadvisedness_n and_o incircumspection_n of_o those_o 〈◊〉_d have_v refer_v the_o declination_n of_o the_o magnet_n to_o the_o deviation_n of_o the_o asterisme_n ursa_fw-la minor_n or_o pole_n of_o the_o ecliptic_a from_o the_o pole_n of_o the_o world_n and_o attempt_v to_o explain_v it_o by_o imagine_v some_o certain_a magnetic_a rock_n which_o be_v situate_a on_o the_o east_n side_n of_o the_o 〈◊〉_d pole_n of_o the_o earth_n constitute_v a_o special_a magnetic_a pole_n 〈…〉_z the_o versory_a needle_n be_v general_o deflect_v much_o more_o 〈…〉_z be_v the_o invention_n of_o dr._n gilbert_n who_o suppose_v that_o the_o 〈◊〉_d virtue_n of_o the_o earth_n be_v more_o powerful_o impress_v upon_o 〈…〉_z from_o the_o extant_a or_o eminent_a part_n thereof_o and_o especial_o 〈…〉_z continent_n make_v out_o the_o cause_n of_o the_o magnet_n indirection_n or_o variation_n thus_o if_o the_o needle_n be_v place_v in_o the_o middle_n betwixt_o two_o vast_a continent_n as_o in_o the_o azore_n which_o have_v europe_n to_o the_o east_n and_o america_n to_o the_o west_n it_o suffer_v no_o sensible_a distraction_n to_o either_o part_n but_o if_o it_o be_v bring_v near_o to_o the_o continent_n of_o europe_n and_o asia_n it_o must_v be_v invite_v and_o deflect_v towards_o the_o east_n and_o near_o to_o the_o continent_n of_o america_n it_o shall_v deviate_v as_o much_o towards_o the_o west_n for_o the_o same_o cause_n also_o upon_o the_o western_a coast_n of_o africa_n the_o declination_n be_v towards_o the_o east_n and_o on_o the_o oriental_a towards_o the_o west_n and_o betwixt_o they_o both_o as_o at_o the_o cape_n of_o good-hope_a none_o at_o all_o and_o yet_o this_o subtle_a theory_n of_o dr._n gilbert_n be_v more_o theâ—_n suspect_v of_o imperfection_n for_o since_o that_o on_o the_o western_a coast_n of_o america_n and_o of_o goa_n the_o declination_n of_o the_o needle_n be_v westward_o and_o not_o only_o on_o the_o oriental_a side_n of_o the_o meridional_a america_n and_o chief_o about_o the_o straits_n of_o megellan_n but_o also_o on_o the_o oriental_a side_n of_o the_o septentrional_a america_n as_o at_o virginia_n the_o declination_n tease_v not_o to_o be_v in_o the_o same_o manner_n towards_o the_o east_n absolute_o contrary_a to_o his_o hypothesis_n therefore_o have_v the_o incomparable_a father_n kircher_n to_o his_o own_o immortal_a honour_n and_o our_o great_a satisfaction_n advise_v we_o to_o leave_v the_o attraction_n of_o adjacent_a continent_n and_o have_v recourse_n only_o to_o the_o divers_a position_n of_o the_o interior_a magnetical_a fibre_n of_o the_o earth_n over_o which_o the_o magnet_n or_o needle_n stand_v consider_v that_o they_o have_v their_o situation_n sometime_o exquisite_o meridional_a sometime_o more_o and_o less_o oblique_a and_o tend_v in_o some_o place_n in_o long_a in_o other_o in_o short_a tract_n for_o it_o be_v no_o difficult_a conception_n the_o virtue_n of_o the_o earth_n be_v impress_v upon_o the_o needle_n from_o the_o magnetical_a fibre_n and_o vein_n that_o be_v near_a i._n e._n direct_o subjacent_a thereunto_o and_o dispose_v thereby_o into_o a_o situation_n respective_a to_o the_o ductus_fw-la of_o those_o perpendicular_o subjacent_a fibres_n so_o that_o whatever_o be_v the_o direction_n of_o the_o needle_n i._n e._n either_o without_o all_o declination_n or_o with_o some_o more_o or_o less_o in_o one_o part_n towards_o the_o east_n in_o another_o towards_o the_o contrary_a pole_n of_o the_o heaven_n still_o may_v we_o suppose_v it_o to_o be_v exact_o respondent_fw-la to_o the_o ductus_fw-la or_o direction_n of_o the_o fibre_n of_o the_o earth_n that_o perpendicular_o lie_v underneath_o it_o nor_o be_v this_o mere_o petitionary_a or_o excogitated_a only_a for_o the_o solution_n of_o this_o grand_a magnetical_a problem_n as_o the_o former_a of_o gilbert_n seem_v to_o have_v be_v but_o found_v upon_o a_o parallel_n experiment_n for_o if_o you_o place_v several_a barrs_n of_o iron_n excite_v upon_o the_o ground_n so_o that_o one_o may_v lie_v exact_o according_a to_o the_o meridian_n and_o all_o the_o rest_n in_o several_a degree_n of_o obliquity_n until_o you_o come_v almost_o to_o make_v a_o aequinoctionall_a line_n with_o one_o and_o then_o gentle_o and_o at_o requisite_a distance_n move_v a_o invigorated_a needle_n equilibrate_v upon_o a_o pin_n over_o they_o you_o shall_v observe_v the_o direction_n of_o it_o to_o be_v vary_v to_o more_o and_o less_o obliquity_n from_o the_o meridian_n barr_n respective_o to_o the_o situation_n of_o each_o of_o the_o other_o barrs_n over_o which_o it_o be_v direct_o hold_v now_o if_o you_o suppose_v the_o magnetic_a fibres_fw-fr of_o the_o earth_n to_o have_v the_o same_o virtue_n upon_o the_o needle_n as_o if_o not_o much_o more_o than_o the_o subjacent_a iron_n barrs_n have_v you_o have_v attain_v the_o bottom_n of_o the_o mystery_n and_o that_o one_o of_o the_o great_a in_o nature_n year_n the_o eleven_o and_o last_o that_o as_o the_o conversion_n of_o the_o inspire_a needle_n be_v noâ—_n exact_o meridional_a in_o all_o place_n of_o the_o earth_n but_o side_v more_o or_o less_o â—oward_a the_o east_n in_o some_o topical_a meridians_fw-la and_o towards_o the_o west_n in_o other_o so_o also_o be_v not_o the_o declination_n thereof_o though_o in_o one_o and_o the_o same_o place_n constant_a to_o the_o same_o degree_n at_o all_o time_n but_o admit_v considerable_a variation_n and_o that_o in_o a_o few_o year_n for_o mr._n burrowâ—_n in_o the_o year_n 1580_o make_v a_o exact_a observation_n of_o the_o quantity_n of_o the_o needle_n declination_n towards_o the_o east_n at_o lincus_n near_o london_n find_v it_o to_o amount_v to_o no_o less_o than_o 11._o degree_n 15_o minute_n and_o afterward_o in_o the_o year_n 1622._o mr._n gunter_n at_o the_o same_o place_n observe_v it_o to_o be_v diminish_v to_o only_o 6._o degree_n and_o 13_o minute_n and_o gellebrand_n in_o anno_fw-la dom._n 1634._o in_o the_o same_o place_n find_v it_o to_o come_v yet_o lower_v and_o not_o to_o exceed_v 4_o degree_n 6_o minute_n so_o that_o in_o the_o meridian_n oâ—_n london_n as_o our_o noble_a countryman_n sir_n keâ—elm_n digby_n have_v wâ—ll_n remark_v the_o declination_n of_o the_o needle_n eastward_o
maintain_v a_o perpetual_a circulation_n upon_o the_o surface_n of_o the_o earth_n especial_o since_o there_o be_v no_o difficulty_n 〈◊〉_d discourage_v that_o conjecture_n forasmuch_o as_o look_v how_o many_o part_n of_o the_o small_a globe_n during_o the_o motion_n thereof_o tend_v towards_o the_o centre_n of_o the_o earth_n just_o so_o many_o be_v at_o the_o same_o time_n elevate_v from_o it_o so_o that_o a_o full_a compensation_n be_v make_v in_o all_o point_n of_o the_o motion_n the_o same_o can_v but_o perpetual_o continue_v and_o in_o the_o same_o equal_a tenor_n there_o be_v no_o declivity_n whereby_o it_o shall_v be_v accelerate_a no_o acclivity_n whereby_o it_o shall_v be_v retard_v no_o cavity_n whereby_o after_o many_o accurse_n and_o recurse_n or_o reciprocation_n it_o shall_v be_v bring_v at_o length_n to_o acquiesce_v moreover_o in_o order_n to_o our_o grand_a scope_n let_v we_o suppose_v that_o the_o space_n through_o which_o a_o stone_n shall_v be_v project_v be_v absolute_a inane_fw-la or_o such_o as_o the_o imaginary_a space_n and_o then_o we_o must_v acknowledge_v that_o it_o will_v be_v carry_v in_o a_o direct_a and_o invariate_a line_n through_o the_o same_o space_n and_o with_o a_o uniform_a and_o perpetual_a motion_n until_o it_o shall_v meet_v with_o some_o other_o space_n full_a of_o magnetic_a ray_n aer_fw-la or_o some_o other_o resist_a substance_n but_o here_o with_o we_o in_o the_o atmosphere_n because_o no_o space_n be_v inane_fw-la sensible_o but_o replete_a as_o well_o with_o aer_fw-la as_o with_o million_o of_o magnetic_a ray_n transmit_v from_o the_o earth_n and_o so_o a_o stone_n project_v must_v encounter_v they_o in_o every_o point_n of_o space_n through_o which_o it_o move_v therefore_o be_v it_o that_o it_o can_v be_v move_v either_o in_o a_o direct_a line_n or_o equal_o or_o long_o for_o since_o multitude_n of_o magnetic_a ray_n must_v necessary_o invade_v and_o attach_v it_o as_o soon_o as_o it_o be_v discharge_v from_o the_o projicient_fw-la though_o at_o first_o set_v forth_o it_o break_v through_o they_o and_o so_o be_v scarce_o at_o all_o deflect_v yet_o because_o more_o and_o more_o magnetic_a ray_n fresh_o lie_v hold_v of_o it_o in_o every_o part_n of_o space_n renew_v the_o attraction_n and_o so_o more_o and_o more_o infringe_v and_o weaken_v the_o force_n of_o its_o motion_n hence_o come_v it_o that_o in_o the_o progress_n it_o do_v by_o little_a and_o little_o deflect_v from_o the_o line_n of_o direction_n move_v slow_a and_o slow_a and_o at_o length_n sink_v down_o to_o the_o earth_n thereon_o attain_v its_o quiet_a hereupon_o when_o man_n shall_v demand_v what_o be_v that_o cause_n which_o weaken_v and_o at_o last_o quite_o destroy_v the_o virtue_n impress_v upon_o a_o thing_n project_v right_o understand_v by_o the_o virtue_n impress_v the_o motion_n begin_v by_o the_o projicient_fw-la and_o continue_v by_o the_o projectum_fw-la the_o answer_n be_v manifest_a viz._n that_o it_o be_v the_o attraction_n of_o the_o earth_n which_o first_o oppose_v after_o gradual_o refract_v and_o in_o fine_a whole_o overcome_v the_o motion_n impress_v and_o so_o determine_v the_o projectum_fw-la to_o quiet_a hence_o also_o may_v we_o learn_v that_o all_o motion_n once_o impress_v be_v of_o itself_o indelible_a and_o can_v be_v diminish_v or_o determine_v but_o by_o some_o external_n cause_n that_o be_v of_o power_n to_o repress_v it_o why_o this_o consider_v you_o may_v please_v to_o observe_v that_o through_o the_o atmosphere_n or_o space_n circumviron_v the_o terrestrial_a globe_n be_v so_o possess_v by_o the_o aer_fw-la and_o swarm_n of_o magnetic_a ray_n no_o body_n can_v be_v project_v in_o a_o absolute_a direct_n or_o perfect_o straight_a line_n unless_o perpendicular_o upward_a or_o downward_o for_o if_o the_o projection_n be_v make_v either_o oblique_o or_o parallel_v to_o the_o horizon_n the_o projectum_fw-la sudden_o begin_v to_o deflect_v from_o the_o mark_n at_o which_o it_o be_v aim_v and_o so_o describe_v not_o a_o straight_a but_o crooked_a line_n not_o that_o the_o deflection_n or_o curvity_n be_v sensible_a at_o a_o small_a distance_n especial_o if_o the_o motion_n be_v vehement_a such_o as_o that_o of_o a_o arrow_n shoot_v from_o a_o bow_n or_o bullet_n discharge_v from_o a_o gun_n but_o that_o in_o every_o point_n of_o space_n and_o time_n the_o thing_n project_v be_v attract_v somewhat_o downward_o and_o there_o be_v the_o same_o reason_n for_o its_o deflection_n in_o the_o first_o as_o there_o be_v for_o its_o deflection_n in_o the_o second_o three_o four_o or_o any_o follow_a point_n of_o space_n and_o instant_n of_o time_n though_o the_o great_a opposition_n of_o the_o force_n impress_v make_v that_o deflection_n less_o at_o the_o first_o nor_o ought_v it_o to_o incline_v we_o to_o the_o contrary_a that_o archer_n and_o gunner_n frequent_o hit_v the_o mark_n at_o which_o they_o level_v to_o some_o certain_a distance_n because_o that_o distance_n be_v common_o such_o as_o that_o the_o deflection_n therein_o be_v not_o sensible_a though_o it_o be_v sometime_o a_o hairs-breadth_n two_o three_o or_o four_o sometime_o a_o inch_n below_o the_o mark_n together_o further_o you_o may_v observe_v that_o when_o a_o stone_n be_v project_v or_o a_o bullet_n shoot_v upward_o yet_o not_o perpendicular_o but_o oblique_o the_o motion_n thereof_o be_v to_o be_v consider_v not_o as_o simple_o perpendicular_a or_o simple_o horizontal_n but_o as_o mix_v or_o compose_v of_o a_o horizontal_n and_o perpendicular_a together_o of_o a_o perpendicular_a forasmuch_o as_o the_o altitude_n thereof_o may_v be_v measure_v by_o a_o perpendicular_a line_n of_o a_o horizontal_n forasmuch_o as_o it_o be_v make_v according_a to_o the_o horizon_n and_o the_o latitude_n thereof_o may_v be_v take_v by_o the_o plane_n of_o the_o horizon_n but_o because_o by_o how_o much_o the_o more_o it_o have_v of_o the_o perpendicular_a so_o much_o the_o less_o it_o have_v of_o the_o horizontal_n so_o that_o the_o altitude_n of_o it_o may_v amount_v to_o fifty_o foot_n and_o the_o latitude_n not_o exceed_v one_o foot_n therefore_o be_v it_o manifest_a that_o the_o crooked_a line_n describe_v by_o this_o compass_n motion_n can_v be_v circular_a and_o galileo_n dialog_n 4._o have_v demonstrate_v that_o the_o line_n be_v parabolical_a or_o such_o as_o geometrician_n describe_v in_o the_o ambite_fw-la of_o a_o cone_n when_o they_o so_o intersect_v it_o oblique_o from_o one_o side_n at_o the_o base_a that_o the_o motion_n of_o the_o intersection_n be_v make_v parallel_n to_o the_o other_o side_n leave_v whole_a for_o the_o area_n of_o each_o resegment_n be_v the_o geometrician_n parabola_fw-la and_o the_o crooked_a ambite_fw-la of_o the_o area_n be_v a_o parabolical_a line_n and_o frequent_o take_v for_o the_o parabola_fw-la itself_o we_o remember_v also_o how_o galileo_n upon_o consequence_n and_o among_o other_o remarkable_n do_v observe_v that_o of_o all_o projection_n make_v by_o the_o same_o force_n the_o long_a and_o in_o that_o respect_n the_o most_o efficacious_a be_v that_o which_o be_v make_v to_o a_o half-right_a angle_n or_o by_o aim_v at_o the_o forty_o five_o degree_n of_o altitude_n in_o respect_n of_o the_o more_o prolix_a parabola_fw-la which_o be_v describe_v by_o the_o prâ—jectum_n aim_v at_o that_o altitude_n since_o at_o all_o other_o altitude_n the_o parabola_fw-la must_v be_v short_a the_o superior_a altitude_n be_v less_o and_o the_o inferior_a more_o open_a than_o be_v requisite_a now_o this_o composition_n of_o a_o perpendicular_a and_o horizontal_n motion_n may_v be_v most_o convenient_o demonstrate_v unto_o you_o thus_o composition_n be_v in_o a_o ship_n under_o sail_n if_o you_o hold_v a_o ball_n in_o your_o hand_n the_o motion_n of_o the_o ball_n will_v be_v only_a horizontal_n viz._n that_o whereby_o the_o ship_n do_v carry_v you_o your_o hand_n and_o the_o ball_n in_o it_o if_o the_o ship_n stand_v still_o and_o you_o throw_v the_o ball_n direct_o upward_a the_o motion_n of_o the_o ball_n will_v be_v only_o perpendicular_a but_o if_o the_o ship_n be_v move_v at_o the_o same_o instant_n you_o throw_v the_o ball_n upward_o then_o will_v the_o motion_n thereof_o be_v compound_v partly_o perpendicular_a partly_o horizontal_n for_o the_o ball_n shall_v be_v carry_v oblique_o and_o describe_v a_o parabolical_a line_n in_o which_o it_o ascend_v and_o again_o fall_v down_o again_o and_o in_o the_o mean_a time_n it_o shall_v be_v promove_v horizontal_o the_o perpendicular_a alone_a yourself_o may_v discern_v with_o your_o own_o eye_n because_o the_o horizontal_a be_v common_a both_o to_o the_o ball_n and_o your_o eye_n and_o when_o as_o well_o the_o ball_n as_o your_o eye_n be_v promove_v therefore_o do_v it_o always_o appear_v imminent_a over_o your_o eye_n and_o in_o the_o same_o perpendicular_a but_o for_o the_o horizontal_n he_o only_o can_v deprehend_v it_o who_o stand_v still_o on_o the_o shore_n
violent_o project_v upward_o they_o they_o revert_v or_o fall_v down_o again_o by_o reason_n of_o the_o magnetic_a attraction_n of_o the_o earth_n and_o it_o now_o remain_v only_o that_o we_o consider_v the_o reason_n of_o that_o other_o species_n of_o motion_n reflex_n or_o rebound_v whereby_o body_n be_v also_o violent_o move_v or_o project_v any_o way_n be_v impede_v in_o their_o course_n and_o divert_v from_o the_o line_n of_o their_o direction_n by_o other_o body_n encounter_v they_o concern_v this_o theorem_fw-la therefore_o be_v please_v to_o know_v that_o among_o all_o reflection_n by_o way_n of_o rebound_v or_o resilition_n that_o be_v the_o chief_a when_o a_o body_n project_v and_o impinge_v against_o another_o body_n be_v return_v from_o thence_o direct_o or_o in_o the_o same_o line_n towards_o the_o place_n from_o whence_o it_o be_v project_v which_o always_o happen_v when_o the_o projection_n be_v make_v to_o right_a angle_n or_o in_o regular_a line_n such_o as_o that_o in_o which_o a_o heavy_a body_n descend_v upon_o a_o horizontal_a plane_n and_o all_o other_o reflection_n be_v in_o dignity_n inferior_a thereunto_o as_o such_o whereby_o the_o thing_n project_v do_v not_o rebound_v in_o a_o direct_a line_n towards_o the_o same_o point_n from_o whence_o it_o be_v project_v but_o to_o some_o other_o region_n by_o other_o line_n according_a as_o it_o be_v project_v in_o line_n more_o or_o less_o oblique_a because_o with_o what_o inclination_n a_o body_n fall_v upon_o a_o plane_n with_o the_o very_a same_o inclination_n do_v it_o rebound_v from_o the_o plane_n especial_o a_o globe_n and_o such_o as_o be_v of_o a_o uniform_a matter_n and_o consequent_o have_v the_o centre_n of_o magnitude_n and_o that_o of_o gravity_n coincident_a in_o the_o same_o point_n so_o that_o by_o how_o much_o the_o more_o oblique_a the_o projection_n be_v and_o how_o much_o the_o less_o be_v the_o angle_n make_v of_o its_o line_n with_o the_o line_n of_o the_o plane_n call_v the_o angle_n of_o incidence_n so_o much_o the_o more_o oblique_a be_v the_o reflection_n make_v and_o so_o much_o the_o less_o the_o angle_n make_v of_o its_o line_n with_o the_o line_n of_o the_o plane_n continue_v call_v the_o angle_n of_o reflection_n and_o that_o so_o long_o as_o till_o the_o line_n of_o projection_n shall_v become_v parallel_n to_o the_o plane_n and_o so_o no_o body_n occur_v to_o or_o encounter_v the_o projectum_fw-la no_o reflection_n at_o all_o be_v make_v whatever_o know_v moreover_o that_o betwixt_o no_o reflection_n at_o all_o and_o the_o least_o reflection_n that_o be_v possible_a there_o may_v be_v assign_v as_o it_o be_v a_o certain_a medium_fw-la and_o that_o be_v the_o emersion_n or_o rise_v up_o again_o of_o a_o weight_n appense_v to_o a_o thread_n or_o lutestring_n when_o perform_v a_o vibration_n or_o swing_n from_o one_o side_n to_o the_o other_o it_o ascend_v from_o the_o perpendicular_a line_n to_o which_o by_o descend_v it_o have_v reduce_v itself_o for_o in_o that_o case_n no_o â—â—â—lecting_a body_n do_v occur_v a_o simple_a arch_n be_v describe_v and_o yâ—â—â—here_o be_v as_o a_o certain_a procidence_n or_o fall_v down_o to_o the_o low_a point_n of_o the_o arch_n so_o also_o a_o certain_a resilition_n or_o rise_v up_o again_o from_o â—he_n low_a point_n of_o the_o arch_n towards_o the_o contrary_a side_n again_n having_z conceive_v a_o direct_a line_n touch_v the_o low_a point_n of_o the_o arch_n so_o as_o that_o the_o weight_n suspend_v by_o a_o string_n may_v in_o its_o vibration_n glance_n upon_o it_o with_o its_o low_a extreme_a and_o only_o in_o a_o point_n touch_v the_o horizontal_a line_n you_o shall_v have_v on_o each_o side_n a_o angle_n madâ—_n from_o the_o arch_n and_o the_o line_n touch_v it_o which_o be_v therefore_o call_v the_o angle_n of_o contingence_n and_o because_o geometrician_n demonstrateâ—_n that_o the_o angle_n of_o contingence_n which_o true_o differ_v from_o a_o right_a line_n be_v less_o than_o any_o rectilinear_n angle_n however_o acute_a therefore_o may_v each_o of_o those_o angles_n be_v say_v to_o be_v median_a betwixt_o the_o right_a line_n and_o the_o angle_n either_o of_o incidenceâ—_n or_o of_o reflection_n how_o small_a soever_o it_o be_v and_o consequent_o the_o emersion_n of_o the_o weight_n in_o vibration_n may_v as_o just_o be_v say_v to_o be_v median_a betwixt_o the_o small_a reflection_n and_o none_o at_o all_o however_o this_o emersion_n seem_v to_o 〈◊〉_d the_o rule_n of_o all_o reflection_n whatever_o for_o as_o in_o the_o vibration_n of_o a_o weight_n appense_v to_o a_o string_n and_o describe_v a_o simple_a arch_n the_o aâ—gle_a of_o its_o emersion_n be_v always_o equal_a to_o the_o angle_n of_o its_o procidence_n so_o in_o projection_n describe_v a_o angular_a line_n the_o angle_n of_o reflection_n be_v always_o quantum_fw-la ex_fw-la se_fw-la est_fw-la equal_a to_o the_o angle_n of_o incidence_n we_o say_v quantum_fw-la ex_fw-la se_fw-la est_fw-la for_o otherwise_o whether_o it_o be_v sensible_a or_o not_o because_o so_o long_o as_o the_o projectum_fw-la be_v transfer_v it_o be_v always_o somewhat_o depress_v towards_o the_o earth_n for_o the_o reason_n former_o allege_v thence_o come_v it_o that_o the_o reflection_n can_v neither_o be_v so_o strong_a or_o smart_a as_o the_o incidence_n nor_o make_v as_o great_a a_o angle_n 〈◊〉_d arise_v to_o as_o great_a a_o altitude_n which_o we_o insinuate_v that_o we_o may_v not_o insist_v upon_o this_o advertisement_n that_o the_o equality_n of_o the_o angle_n of_o the_o reflection_n to_o that_o of_o the_o incidence_n may_v be_v so_o much_o thâ—_n less_o by_o how_o much_o the_o less_o the_o project_v body_n come_v to_o a_o spherical_a figure_n or_o do_v consist_v of_o matter_n the_o less_o uniform_a râ—â—lâ—xiâ—n_n for_o to_o attain_v to_o that_o equality_n of_o the_o angel_n of_o incidence_n and_o reflection_n necessary_a it_o be_v that_o the_o body_n project_v be_v exact_o spherical_a and_o of_o uniform_a matter_n and_o so_o have_v the_o centre_n of_o gravity_n and_o the_o centre_n of_o magnitude_n coincident_a in_o one_o and_o the_o same_o point_n as_o we_o have_v former_o intimate_v it_o be_v as_o well_o against_o reason_n as_o experience_n that_o body_n want_v those_o condition_n shall_v arise_v to_o that_o aequaliâ—â—_n which_o that_o we_o may_v the_o better_o understand_v let_v we_o consider_v that_o 〈◊〉_d in_o a_o globe_n or_o ball_n fall_v down_o we_o regard_v only_o that_o gravity_n which_o it_o acquire_v in_o its_o descent_n from_o the_o magnetic_a attraction_n of_o the_o earth_n so_o in_o a_o globe_n or_o ball_n project_v we_o be_v to_o regard_v only_o that_o impetus_fw-la or_o force_n which_o be_v impress_v upon_o it_o by_o the_o projicient_fw-la supply_v the_o place_n of_o gravity_n and_o in_o respect_n whereof_o the_o centre_n of_o its_o gravity_n may_v be_v conceive_v to_o be_v one_o with_o that_o of_o its_o magnitude_n let_v a_o ball_n therefore_o be_v project_v direct_o or_o to_o right_a angle_n upon_o a_o plane_n and_o because_o in_o that_o case_n that_o fiber_n must_v be_v the_o axis_n of_o its_o gravity_n who_o extreme_a go_v foremost_a be_v impinge_v against_o the_o plane_n thence_o be_v it_o manifest_a that_o the_o repression_n must_v be_v make_v in_o a_o direct_a line_n along_o that_o axis_n the_o parallel_n fibres_fw-fr in_o equal_a number_n on_o each_o part_n environ_v that_o axis_n and_o so_o not_o sway_v or_o divert_v the_o ball_n more_o to_o one_o part_n than_o to_o another_o by_o reason_n of_o any_o the_o least_o disproportion_n of_o quantity_n on_o either_o side_n then_o lâ—t_v the_o same_o ball_n be_v project_v oblique_o against_o the_o same_o plane_n and_o because_o in_o this_o case_n not_o that_o middle_a fiber_n which_o constitute_v the_o axis_n of_o gravity_n but_o some_o one_o or_o other_o of_o the_o fibres_fw-es circumstant_fw-la about_o it_o must_v with_o one_o of_o its_o extreme_n strike_v against_o the_o plane_n therefore_o be_v it_o necessary_a that_o that_o same_o fiber_n be_v repress_v by_o that_o impulse_n and_o by_o that_o repression_n compel_v to_o give_v backward_o towards_o its_o contrary_a extreme_a and_o thereby_o in_o some_o measure_n to_o oppose_v the_o motion_n begin_v which_o it_o whole_o overcome_v and_o so_o the_o ball_n will_v rebound_v from_o the_o plane_n the_o same_o way_n it_o come_v if_o the_o fibre_n on_o that_o side_n the_o axis_n of_o gravity_n which_o be_v near_a to_o the_o plane_n be_v equal_a in_o number_n to_o that_o be_v on_o the_o far_o or_o contrary_a side_n of_o it_o but_o because_o those_o fibre_n that_o be_v on_o the_o far_a side_n or_o on_o the_o part_n of_o the_o centre_n and_o axis_n be_v far_o more_o in_o number_n and_o so_o theâ—e_n be_v a_o great_a quantity_n of_o matter_n and_o consequent_o a_o great_a force_n impress_v than_o on_o the_o side_n near_o to_o the_o plane_n
almost_o apodictical_a that_o gravity_n be_v the_o effect_n of_o the_o earth_n attraction_n ibid._n sect_n iii_o artic_a 1_o levity_n nothing_o but_o less_o gravity_n 290_o 2_o aristotle_n sphere_n of_o fire_n extinguish_v 291_o 3_o that_o fire_n do_v not_o asâ—ned_v spontaneous_o but_o violent_o i._n e._n be_v impel_v upward_o by_o the_o aer_fw-la ibid._n chap._n xii_o of_o heat_n and_o cold._n p._n 293._o sect_n i._o artic_a 1_o the_o connection_n of_o this_o to_o the_o immediate_o precedent_a chapter_n ibid._n 2_o why_o the_o author_n deduce_v the_o 4_o first_o quality_n not_o from_o the_o 4_o vulgar_a element_n but_o from_o the_o 3_o propriety_n of_o atom_n ibid._n 3_o the_o nature_n of_o heat_n be_v to_o be_v conceive_v from_o its_o general_n effect_n viz._n the_o penetration_n discussion_n and_o dissolution_n of_o the_o body_n concrete_a ibid._n 4_o heat_v define_v as_o no_o immaterial_a but_o a_o substantial_a quality_n 294_o 5_o why_o such_o atom_n as_o be_v comparate_v to_o produce_v heat_n be_v to_o be_v name_v the_o atom_n of_o heat_n and_o such_o concretion_n as_o harbour_v they_o be_v to_o be_v call_v hot_a either_o actual_o or_o potential_o ibid._n 6_o the_o 3_o necessary_a propriety_n of_o the_o atom_n of_o heat_n ibid._n 7_o that_o the_o atom_n of_o heat_n be_v capable_a of_o expedition_n or_o deliverance_n from_o concretion_n two_o way_n viz._n by_o evocation_n and_o motion_n 296_o 8_o a_o unctuous_a matter_n the_o chief_a seminary_n of_o the_o atom_n of_o heat_n and_o why_o 297_o 9_o among_o unctuous_a concretion_n why_o some_o be_v more_o easy_o inflammable_a than_o other_o 298_o 10_o a_o consectary_n that_o rarefaction_n be_v the_o proper_a effect_n of_o heat_n ibid._n 11_o problem_n 1._o why_o the_o bottom_n of_o a_o cauldron_n wherein_o water_n iâ—_n boil_v may_v be_v touch_v by_o the_o hand_n of_o a_o man_n without_o burn_v it_o sol._n 299_o 12_o problem_n 2._o why_o lime_n become_v ardent_a upon_o the_o affusion_n of_o 〈◊〉_d sol._n 300_o 13_o problem_n 3_o why_o the_o heat_n of_o lime_n burn_v be_v more_o vehement_a than_o the_o heat_n of_o any_o flame_n whatever_o sol._n ibid._n 14_o problem_n 4._o why_o boil_a oil_n scald_v more_o vehement_o than_o boil_a water_n sol._n 301_o 15_o problem_n 5._o why_o metal_n melt_v or_o make_v red_a hod_n burn_v more_o violent_a than_o the_o fire_n that_o melt_v or_o heat_v they_o sol._n ibid._n 16_o consectary_n that_o as_o the_o degree_n of_o heat_n so_o those_o of_o 〈◊〉_d be_v innumerable_o various_a ibid._n 17_o that_o to_o the_o calefaction_n combustion_n or_o inflammation_n of_o a_o body_n by_o fire_n be_v require_v a_o certain_a space_n of_o time_n and_o that_o the_o space_n be_v great_a or_o less_o according_a to_o the_o paucity_n or_o abundance_n of_o the_o igneous_a atom_n invade_v the_o body_n object_v and_o more_o or_o less_o of_o aptitude_n in_o the_o contexture_n thereof_o to_o admit_v they_o 30â—_n 18_o flame_n more_o or_o less_o durable_a for_o various_a respect_n 303_o 19_o consectary_n 3._o that_o the_o immediate_a and_o genuine_a effect_n of_o heat_n be_v the_o disgregation_n of_o all_o body_n as_o well_o homogeneous_a as_o heterogeneous_a and_o that_o the_o congregation_n of_o homogeneous_a nature_n be_v only_o a_o accidental_a effect_n of_o heat_n contrary_a to_o aristotle_n 305_o sect_n ii_o artic_a 1_o the_o link_n connect_v this_o section_n to_o the_o former_a 306_o 2_o that_o cold_a be_v no_o privation_n of_o heat_n but_o a_o real_a and_o positive_a quality_n demonstrate_v ibid._n 3_o that_o the_o adequate_a notion_n of_o cold_a aught_o to_o be_v desumeâ—_n from_o its_o general_n effect_v viz._n the_o congregation_n and_o compaction_n of_o body_n 307_o 4_o cold_a no_o immaterial_a but_o a_o substantial_a quality_n ibid._n 5_o gassendus_fw-la conjectural_a assignation_n of_o a_o tetrahedical_n figure_n to_o the_o atom_n of_o cold_a assert_v by_o sundry_a weighty_a consideration_n ibid._n 6_o cold_a not_o essential_a to_o earth_n water_n nor_o aer_fw-la 309_o 7_o but_o to_o some_o special_a concretion_n for_o the_o most_o part_n consist_v of_o frigorifick_a atom_n 312_o 8_o water_n the_o chief_a antagonist_n to_o fire_n not_o in_o respect_n of_o its_o accidental_a frigidity_n but_o essential_a humidity_n and_o that_o the_o aer_fw-la have_v a_o just_a title_n to_o the_o principality_n of_o cold_a than_o either_o water_n or_o earth_n 313_o 9_o problem_n why_o the_o breath_n of_o a_o man_n do_v warm_a when_o expire_v with_o the_o mouth_n wide_o open_a and_o cool_v when_o efflate_v with_o the_o mouth_n contract_v ibid._n 10_o three_o consectary_n from_o the_o premise_n 314_o chap._n xiii_o fluidity_n stability_n humidity_n siccity_n p._n 316._o sect_n i._o artic_a 1_o why_o fluidity_n and_o firmness_n be_v here_o consider_v before_o humidity_n and_o siccity_n ibid._n 2_o the_o latin_a term_n humidum_fw-la and_o siccum_fw-la too_o narrow_a to_o comprehend_v the_o full_a sense_n of_o aristotle_n 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d ibid._n 2_o the_o latin_a term_n humidum_fw-la and_o siccum_fw-la too_o narrow_a to_o comprehend_v the_o full_a sense_n of_o aristotle_n 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d ibid._n 3_o aristotle_n definition_n of_o a_o humid_a substance_n not_o praecise_a enough_o but_o in_o common_a also_o to_o a_o fluid_a and_o his_o definition_n of_o a_o dry_a accommodable_a to_o a_o firm_a 317_o 4_o fluidity_n define_v 318_o 5_o wherein_o the_o formal_a reason_n thereof_o do_v consist_v ibid._n 6_o the_o same_o far_o illustrate_v by_o the_o twofold_a fluidity_n of_o metal_n and_o the_o peculiar_a reason_n of_o each_o 319_o 7_o firmness_n define_v 320_o 8_o and_o derive_v from_o either_o of_o 3_o cause_n ibid._n sect_n ii_o artic_a 1_o humidity_n define_v 321_o 2_o siccity_n define_v 322_o 3_o siccity_n rather_o comparative_a than_o absolute_a ibid._n 4_o all_o moisture_n either_o aqueous_a or_o oleaginous_a ibid._n 5_o problem_n â—_o why_o pure_a water_n can_v wash_v out_o oil_n from_o a_o cloth_n which_o yet_o water_n wherein_o ash_n have_v be_v decoct_v or_o soap_n dissolve_v easy_o do_v solut._n 323_o 6_o problem_n 2._o why_o stain_v of_o ink_n be_v not_o to_o be_v take_v out_o of_o clothes_n but_o with_o some_o acid_n liquor_n solut._n ibid._n chap._n fourteen_o softness_n hardness_n flexility_n tractility_n ductility_n etc._n etc._n p._n 325._o sect_n i._o artic_a 1_o the_o illation_n of_o the_o chapter_n ibid._n 2_o hard_a and_o soft_a define_v ibid._n 3_o the_o difference_n betwixt_o a_o soft_a and_o fluid_a 326_o 4_o solidity_n of_o atom_n the_o fundament_n of_o hardness_n and_o inanity_n intercept_v among_o they_o the_o fundament_n of_o softness_n in_o all_o concretion_n ibid._n 5_o hardness_n and_o softness_n no_o absolute_a but_o mere_o comparative_a quality_n as_o adscriptive_a to_o concretion_n contrary_a to_o aristotle_n 327_o 6_o softness_n in_o firm_a thing_n deduce_v from_o the_o same_o cause_n as_o fluidity_n in_o fluid_a one_o ibid._n 7_o the_o general_a reason_n of_o the_o mollification_n of_o hard_a and_o induration_n of_o soft_a body_n ibid._n 8_o the_o special_a manner_n of_o the_o mâ—llification_n of_o hard_a and_o induration_n of_o soft_a body_n 328_o 9_o problem_n why_o iron_n be_v harden_a by_o be_v immerse_v red-hot_a into_o cold_a water_n and_o its_o solution_n ibid._n 10_o the_o formal_a reason_n of_o softness_n and_o hardness_n 329_o 11_o the_o ground_n of_o aristotle_n distinction_n betwixt_o formatilia_n and_o pressilia_n ibid._n 12_o two_o axiom_n concern_v and_o illustrate_v the_o nature_n of_o softness_n 330_o sect_n ii_o artic_a 1_o flexility_n tractility_n ductility_n etc._n etc._n derive_v from_o softness_n and_o rigidity_n from_o hardness_n 3â—1_n 2_o problem_n what_o be_v the_o cause_n of_o the_o motion_n of_o restoration_n in_o flexiles_fw-la and_o the_o solut._n ibid._n 3_o two_o obstruction_n expede_v 332_o 4_o why_o flexile_a body_n grow_v weak_a by_o overmuch_o and_o over_o frequent_a bend_v 333_o 5_o the_o reason_n of_o the_o frequent_a vibration_n or_o diadrom_n of_o lutestring_n and_o other_o tractile_a body_n declare_v to_o be_v the_o same_o with_o that_o of_o the_o restorative_n motion_n of_o flexiles_fw-la and_o demonstrate_v ibid._n 6_o problem_n why_o the_o vibration_n or_o diodrom_n of_o a_o chord_n distend_v and_o percuss_v be_v aequitemperaneous_a though_o not_o aequispatial_n and_o the_o solut_n 335_o 7_o problem_n wy_n do_v a_o chord_n of_o a_o duple_n length_n perform_v its_o diadrom_n in_o a_o proportion_n of_o time_n duple_n to_o a_o chord_n of_o a_o single_a length_n both_o be_v distend_v by_o equal_a force_n and_o yet_o if_o the_o chord_n of_o the_o duple_n length_n be_v distend_v by_o a_o duple_n force_n or_o weight_n it_o do_v not_o perform_v its_o diadrom_n in_o a_o proportion_n of_o time_n duple_n to_o that_o of_o the_o other_o but_o only_o if_o the_o force_n or_o weight_n distend_v it_o be_v quadruple_a to_o the_o first_o suppose_v and_o its_o solut_n
to_o prove_v than_o impertinent_a to_o our_o present_a scope_n it_o be_v sufficient_a to_o the_o verisimility_n of_o our_o assign_a cause_n of_o the_o perpendicular_a motion_n of_o terrene_a body_n to_o conceive_v the_o globe_n of_o the_o earth_n to_o be_v a_o loadstone_n only_o analogical_o i._n e._n that_o as_o the_o loadstone_n â—â—th_v perpetual_o emit_v certain_a invisible_a stream_n of_o exile_n particle_n or_o ray_n of_o subtle_a body_n whereby_o to_o allect_v magnetical_a body_n to_o a_o union_n with_o itself_o so_o likewise_o do_v the_o earth_n incessant_o emit_v certain_a invisible_a stream_n or_o ray_n of_o subtle_a body_n wherewith_o to_o attract_v all_o its_o â—â—stracted_a and_o divorce_v part_n back_o again_o to_o a_o union_n with_o itself_o and_o there_o close_o to_o detain_v they_o and_o justifiable_a it_o be_v for_o we_o to_o affirm_v that_o fâ—â—m_o the_o terraqueous_a orb_n there_o be_v a_o continual_a efflux_n not_o only_o of_o vapour_n exhalation_n and_o such_o small_a body_n of_o which_o all_o our_o meteor_n be_v compose_v nor_o only_o of_o such_o as_o the_o general_a mass_n of_o aer_fw-la do_v consist_v of_o but_o also_o of_o other_o particle_n far_o more_o exile_n and_o insensible_a nor_o less_o subtle_a than_o thoâ—e_n which_o deradiate_v from_o the_o loadstone_n in_o a_o moment_n permeate_n the_o most_o solid_a marble_n without_o the_o least_o diminution_n of_o their_o virtue_n because_o as_o the_o attractive_a virtue_n of_o the_o loadstone_n be_v sufficient_o demonstrate_v by_o the_o effect_n of_o it_o the_o actual_a attraction_n of_o iron_n unto_o it_o so_o be_v it_o lawful_a for_o we_o to_o conclude_v the_o earth_n to_o be_v endow_v with_o a_o attractive_a virtue_n also_o mere_o from_o the_o sensible_a effect_n of_o that_o virtue_n the_o actual_a attraction_n of_o stone_n and_o all_o other_o body_n to_o itself_o especial_o since_o no_o other_o conception_n of_o the_o nature_n of_o that_o affection_n which_o the_o world_n call_v gravity_n can_v be_v bring_v to_o a_o clear_a consistence_n with_o that_o notable_a appearance_n the_o gradual_a increase_n of_o velocity_n in_o each_o degree_n of_o a_o body_n perpendicular_a fall_n beside_o the_o analogy_n may_v be_v far_o deduce_v from_o hence_o magnetism_n that_o as_o the_o virtue_n of_o the_o loadstone_n be_v diffuse_v in_o round_a or_o spherical_o and_o upon_o consequence_n its_o effluvia_fw-la or_o ray_n be_v so_o much_o the_o more_o rare_a by_o how_o much_o the_o far_o they_o be_v transmit_v from_o their_o source_n or_o original_n and_o so_o be_v less_o unite_v become_v less_o vigorous_a in_o their_o attraction_n and_o at_o large_a distance_n i._n e._n such_o as_o exceed_v the_o sphere_n of_o their_o energy_n be_v languid_a and_o of_o no_o force_n at_o all_o so_o do_v the_o terrestrial_a globe_n diffuse_v its_o attractive_a virtue_n in_o round_a and_o upon_o consequence_n its_o effluvia_fw-la or_o ray_n become_v so_o much_o the_o more_o rare_a or_o disperse_v by_o how_o much_o far_o they_o be_v transmit_v from_o their_o fountain_n and_o so_o be_v less_o unite_v can_v attract_v a_o stone_n or_o other_o terrene_a body_n at_o excessive_a dâ—stance_n such_o as_o the_o supralunary_a and_o ultramundane_a space_n which_o that_o we_o may_v assert_v with_o more_o perspicuity_n let_v we_o suppose_v a_o stone_n to_o be_v place_v in_o those_o imaginary_a space_n which_o be_v the_o outside_n of_o the_o world_n and_o in_o which_o god_n have_v he_o so_o please_v may_v have_v create_v more_o world_n and_o then_o examine_v whether_o it_o be_v more_o reasonable_a that_o that_o stone_n shall_v rather_o move_v towards_o this_o our_o earth_n than_o remain_v absolute_o immote_a in_o that_o part_n of_o the_o ultramandan_n space_n wherein_o we_o suppose_v it_o posit_v if_o you_o conceive_v that_o it_o will_v tend_v towards_o the_o earth_n imagine_v not_o only_o the_o earth_n but_o also_o the_o whole_a machine_n of_o the_o world_n to_o be_v annihilate_v and_o that_o all_o those_o vast_a space_n which_o the_o universe_n now_o possess_v be_v as_o absolute_o inane_fw-la as_o they_o be_v before_o the_o creation_n and_o then_o at_o least_o because_o there_o can_v be_v no_o centre_n and_o all_o space_n must_v be_v alike_o indifferent_a you_o will_v admit_v that_o the_o stone_n will_v remain_v fix_v in_o the_o same_o place_n as_o have_v no_o affecctation_n or_o tendency_n to_o this_o part_n of_o those_o space_n which_o the_o earth_n now_o possess_v imagine_v the_o world_n to_o be_v then_o again_o restore_v and_o the_o earth_n to_o be_v resituate_a in_o the_o place_n as_o before_o its_o adnihilation_n and_o then_o can_v you_o conceive_v that_o the_o stone_n will_v spontaneous_o tend_v towards_o it_o if_o you_o suppose_v the_o affirmative_a you_o will_v be_v reduce_v to_o inextricable_a difficulty_n not_o to_o grant_v the_o earth_n to_o affect_v the_o stone_n and_o upon_o consequence_n to_o transmit_v to_o it_o some_o certain_a virtue_n consist_v in_o the_o substantial_a emanation_n not_o any_o simple_a and_o immaterial_a quality_n whereby_o to_o give_v it_o notice_n of_o its_o be_v restore_v to_o its_o pristine_a situation_n and_o condition_n for_o how_o otherwise_o can_v you_o suppose_v the_o stone_n shall_v take_v cognizance_n of_o and_o be_v move_v towards_o the_o earth_n now_o this_o be_v so_o what_o can_v follow_v but_o that_o stone_n and_o all_o other_o body_n account_v heavy_a must_v tend_v towards_o the_o earth_n only_o because_o they_o be_v attract_v to_o it_o by_o ray_n or_o stream_n of_o corporeal_a emanation_n from_o it_o to_o they_o transmit_v go_v to_o then_o let_v we_o far_o imagine_v that_o some_o certain_a space_n in_o the_o atmosphere_n be_v by_o power_n supernatural_a make_v so_o empty_a as_o that_o nothing_o can_v arrive_v thereat_o either_o from_o the_o earth_n or_o any_o other_o orb_n can_v you_o then_o conceive_v that_o a_o stone_n place_v in_o that_o inanity_n will_v have_v any_o tendency_n towards_o the_o earth_n or_o affectation_n to_o be_v unite_v to_o its_o centre_n doubtless_o no_o more_o than_o if_o it_o be_v posit_v in_o the_o extramundan_n space_n because_o have_v nothing_o of_o communication_n therewith_o or_o any_o other_o part_n of_o the_o universe_n the_o case_n will_v be_v all_o one_o with_o the_o stone_n as_o if_o there_o be_v no_o earth_n no_o world_n no_o centre_n wherefore_o since_o we_o observe_v a_o stone_n from_o the_o great_a height_n to_o which_o any_o natural_a force_n can_v elevate_v the_o same_o to_o tend_v in_o a_o direct_a or_o perpendicular_a line_n to_o the_o earth_n what_o can_v be_v more_o rational_a than_o for_o we_o to_o conceive_v that_o the_o cause_n of_o that_o tendency_n in_o the_o stone_n be_v only_o this_o that_o it_o have_v some_o communication_n with_o the_o earth_n and_o that_o not_o by_o any_o naked_a or_o immaterial_a quality_n but_o some_o certain_a corporeal_a though_o most_o subtle_a emanation_n from_o the_o earth_n especial_o since_o the_o aer_fw-la incumbent_n upon_o the_o stone_n be_v not_o sufficient_a to_o begin_v its_o motion_n of_o descent_n reason_n if_o you_o shall_v yet_o withhold_v your_o assent_n from_o this_o opinion_n which_o we_o have_v thus_o long_o endeavour_v to_o defend_v we_o conjecture_v the_o remora_n to_o be_v chief_o this_o that_o it_o seem_v improbable_a so_o great_a a_o bulk_n as_o that_o of_o a_o very_a large_a stone_n and_o that_o 〈◊〉_d such_o pernicity_n shall_v be_v attract_v by_o such_o slender_a mean_n as_o our_o suppose_a magnetic_a emanation_n and_o therefore_o think_v it_o our_o duty_n to_o satisfy_v you_o concern_v this_o doubt_n we_o answer_v 1_o that_o a_o very_a great_a quantity_n of_o iron_n proportionate_o be_v easy_o and_o nimble_o rush_v into_o the_o arm_n of_o a_o loadstone_n mere_o by_o ray_n of_o most_o subtle_a particle_n such_o as_o can_v be_v discover_v no_o way_n but_o by_o their_o effect_n 2_o that_o stone_n and_o other_o massy_a concretion_n have_v no_o such_o great_a ineptitude_n or_o resistance_n to_o motion_n as_o be_v common_o praesume_v for_o if_o a_o stone_n of_o a_o hundred_o pound_n weight_n be_v suspend_v in_o the_o aer_fw-la by_o a_o small_a wire_n or_o chord_n how_o small_a a_o force_n be_v require_v to_o the_o move_n of_o it_o hither_o why_o therefore_o shall_v a_o great_a force_n be_v require_v to_o the_o attraction_n of_o it_o downward_o 3_o when_o you_o lift_v up_o a_o stone_n or_o other_o body_n from_o the_o earth_n you_o can_v but_o observe_v that_o it_o make_v some_o resistance_n to_o your_o hand_n more_o or_o less_o according_a to_o the_o bulk_n thereof_o which_o resistance_n arise_v from_o hence_o that_o those_o many_o magnetic_a line_n deradiate_v to_o and_o fasten_v upon_o it_o by_o their_o several_a deflexion_n and_o decussation_n hold_v it_o as_o it_o be_v fast_o chain_v down_o to_o the_o earth_n so_o that_o unless_o a_o great_a force_n intervene_v such_o as_o may_v master_v the_o earth_n retentive_a