find_v that_o the_o theorist_n make_v any_o mention_n of_o these_o crack_n for_o that_o purpose_n the_o only_a question_n be_v whither_o the_o heat_n of_o the_o sun_n can_v reach_v so_o low_a as_o the_o abyss_n when_o the_o earth_n be_v dry_v and_o its_o pore_n enlarge_v here_o he_o be_v mistake_v this_o be_v not_o the_o only_a question_n for_o there_o be_v another_o material_a one_o beside_o viz._n that_o suppose_v the_o heat_n of_o the_o sun_n have_v reach_v the_o abyss_n whether_o there_o can_v have_v be_v vapour_n enough_o extract_v from_o it_o to_o furnish_v the_o earth_n and_o i_o think_v i_o have_v prove_v that_o there_o can_v not_o but_o it_o seem_v he_o will_v not_o allow_v of_o the_o calculation_n because_o it_o suppose_v that_o the_o sun_n act_v through_o large_a crack_n fissure_v and_o chap_n which_o he_o say_v the_o theorist_n do_v not_o mention_v for_o any_o such_o purpose_n but_o he_o will_v have_v the_o sun_n to_o have_v act_v only_o through_o the_o pore_n of_o the_o earth_n well_o let_v we_o grant_v his_o supposition_n that_o the_o sun_n do_v not_o act_v through_o large_a crack_n and_o fissure_v which_o i_o think_v will_v best_o serve_v his_o design_n but_o only_o through_o the_o pore_n of_o the_o earth_n and_o we_o will_v see_v how_o much_o the_o theorist_n will_v gain_v by_o it_o i_o be_o accuse_v of_o deal_v unfair_o with_o the_o theorist_n when_o i_o make_v he_o suppose_v that_o mountain_n make_v way_n for_o the_o motion_n and_o dilatation_n of_o vapour_n if_o this_o be_v unfair_a deal_n i_o can_v tell_v what_o will_v be_v fair_a for_o the_o theorist_n himself_o have_v express_o say_v so_o in_o his_o book_n 11._o chap._n 5._o parag._n 4._o of_o the_o english_a theory_n where_o speak_v of_o the_o north_n and_o south_n part_n of_o the_o world_n which_o he_o say_v draw_v the_o vapour_n to_o they_o his_o word_n be_v these_o the_o cold_a of_o those_o part_n attract_v they_o as_o we_o call_v it_o that_o be_v make_v way_n to_o their_o motion_n and_o dilatation_n without_o resistance_n as_o mountain_n and_o cold_a place_n usual_o draw_v vapour_n from_o the_o warm_a though_o i_o quote_v these_o word_n in_o the_o examination_n yet_o the_o defender_n assure_v we_o that_o the_o theorist_n suppose_v no_o such_o thing_n it_o seem_v then_o that_o he_o can_v say_v one_o thing_n and_o suppose_v another_o if_o so_o i_o wish_v the_o defender_n will_v give_v we_o two_o catalogue_n one_o of_o those_o thing_n which_o he_o say_v and_o suppose_v to_o be_v true_a and_o another_o of_o those_o thing_n he_o say_v without_o suppose_v they_o to_o be_v true_a i_o hope_v in_o this_o last_o we_o shall_v find_v what_o be_v say_v in_o the_o seven_o 8_o and_o 9th_o chapter_n of_o the_o archaeologiae_fw-la concern_v the_o moysaicall_a account_n of_o the_o formation_n of_o the_o world_n its_o primitive_a state_n and_o the_o fall_v of_o man._n our_o next_o dispute_n be_v about_o the_o course_n of_o the_o vapour_n the_o theorist_n assert_v that_o it_o will_v be_v towards_o north_n and_o south_n now_o i_o prove_v that_o it_o will_v be_v from_o east_n to_o west_n because_o i_o demonstrate_v that_o there_o must_v be_v a_o continual_a wind_n blow_v that_o way_n in_o a_o earth_n where_o there_o be_v no_o mountain_n to_o change_v the_o direction_n of_o the_o wind_n just_a as_o it_o be_v now_o in_o the_o atlantic_a and_o pacisick_n ocean_n and_o see_v the_o vapour_n swim_v in_o a_o air_n of_o the_o same_o intensive_a gravity_n with_o themselves_o it_o be_v demonstrable_a that_o they_o must_v follow_v the_o motion_n of_o that_o air_n and_o be_v likewise_o carry_v from_o east_n to_o west_n the_o defender_n grant_v that_o their_o motion_n will_v be_v at_o first_o that_o way_n but_o say_v he_o the_o question_n here_o be_v where_o they_o will_v be_v condense_v or_o where_o they_o will_v fall_v i_o think_v it_o do_v not_o signify_v any_o thing_n where_o they_o fall_v for_o i_o be_o sure_a they_o will_v not_o fall_v or_o be_v condense_v in_o a_o place_n to_o which_o they_o be_v never_o carry_v that_o be_v towards_o either_o of_o the_o pole_n the_o theorist_n be_v of_o the_o opinion_n that_o the_o cold_a in_o the_o north_n and_o south_n part_v attract_v the_o vapour_n thither_o that_o be_v as_o he_o explain_v it_o make_v way_n for_o their_o motion_n and_o dilatation_n but_o because_o i_o show_v that_o this_o method_n savour_v a_o little_a of_o absurdity_n our_o theory-mender_n say_v that_o the_o vapour_n be_v divert_v towards_o north_n and_o south_n by_o a_o impulse_n of_o new_a vapour_n this_o opinion_n seem_v to_o i_o to_o be_v as_o unnatural_a as_o the_o other_o for_o if_o the_o vapour_n be_v crowd_v on_o one_o another_o by_o their_o mutual_a impulse_n they_o will_v condense_a one_o another_o and_o fall_v down_o in_o the_o place_n where_o they_o be_v crowd_v i_o be_o sure_a it_o be_v impossible_a that_o a_o atom_n of_o vapour_n however_o impel_v shall_v make_v its_o way_n through_o a_o atmosphere_n of_o the_o same_o gravity_n with_o its_o self_n for_o some_o thousand_o of_o mile_n towards_o either_o of_o the_o pole_n when_o a_o stone_n which_o have_v some_o thousand_o time_n more_o density_n than_o vapour_n and_o consequent_o some_o thousand_o of_o time_n also_o more_o force_n to_o break_v the_o resistance_n of_o the_o medium_n if_o it_o be_v to_o move_v to_o eternity_n in_o the_o air_n yet_o it_o will_v never_o make_v any_o considerable_a way_n in_o the_o medium_n by_o reason_n of_o the_o continual_a loss_n of_o its_o motion_n it_o seem_v to_o contradict_v our_o sense_n to_o suppose_v that_o vapour_n can_v move_v through_o the_o air_n without_o suffer_v such_o a_o resistance_n as_o must_v condense_a they_o we_o observe_v that_o those_o vapour_n which_o be_v in_o the_o cloud_n when_o the_o air_n grow_v light_a begin_v to_o fall_v no_o doubt_n in_o the_o form_n of_o vapour_n but_o afterward_o suffer_v a_o considerable_a resistance_n from_o the_o air_n they_o be_v condense_v into_o drop_n of_o rain_n if_o then_o the_o resistance_n the_o vapour_n meet_v with_o for_o so_o small_a a_o way_n be_v sufficient_a to_o condense_a they_o be_v it_o not_o natural_o impossible_a that_o they_o shall_v travel_v some_o thousand_o of_o miles_n and_o not_o be_v condense_v till_o they_o arrive_v at_o the_o pole_n our_o author_n proceed_v in_o the_o next_o place_n to_o consider_v the_o seven_o chapter_n of_o the_o examination_n and_o answer_v the_o argument_n that_o be_v bring_v against_o the_o theorist_n way_n of_o make_v a_o deluge_n it_o be_v suppose_v in_o the_o theory_n that_o after_o some_o age_n the_o heat_n of_o the_o sun_n must_v have_v pierce_v through_o the_o crust_n of_o the_o earth_n and_o reach_v the_o abyss_n where_o it_o must_v have_v rarify_v the_o water_n there_o and_o raise_v a_o immense_a quantity_n of_o they_o into_o vapour_n these_o endeavour_v to_o expand_v themselves_o and_o the_o pore_n of_o the_o earth_n not_o be_v sufficient_a to_o let_v they_o pass_v through_o will_v press_v upon_o the_o crust_n and_o break_v it_o into_o piece_n so_o that_o its_o fall_n upon_o the_o abyss_n will_v produce_v a_o universal_a deluge_n against_o this_o i_o object_v that_o it_o be_v impossible_a the_o heat_n of_o the_o sun_n can_v reach_v far_o into_o the_o earth_n so_o as_o to_o perform_v any_o considerable_a effect_n since_o by_o observation_n it_o be_v find_v that_o in_o cave_n and_o vault_n there_o be_v not_o any_o sensible_a alteration_n of_o heat_n in_o summer_n and_o winter_n and_o therefore_o see_v that_o the_o heat_n of_o the_o sun_n have_v so_o little_a effect_n in_o place_n of_o the_o earth_n that_o be_v so_o near_o its_o surface_n how_o can_v any_o one_o imagine_v that_o it_o will_v have_v any_o upon_o the_o abyss_n which_o be_v cover_v over_o with_o a_o thick_a crust_n but_o because_o this_o argument_n be_v propose_v in_o general_a term_n i_o endeavour_v to_o bring_v it_o to_o calculation_n in_o order_n to_o which_o i_o assume_v one_o postulatum_fw-la viz._n that_o few_o ray_n of_o heat_n pass_v to_o the_o abyss_n through_o the_o crust_n than_o if_o it_o have_v be_v compose_v of_o several_a surface_n at_o some_o considerable_a distance_n from_o one_o another_o suppose_n 10.20_o or_o 30._o foot_n every_o one_o of_o which_o reflect_v half_o the_o ray_n which_o fall_v upon_o they_o and_o transmit_v the_o other_o half_a '_o this_o i_o think_v be_v a_o postulatum_fw-la which_o every_o body_n will_v have_v grant_v and_o if_o we_o consider_v how_o much_o of_o the_o sun_n light_n and_o heat_n be_v diminish_v by_o a_o thin_a cloud_n of_o vapour_n place_v between_o it_o and_o we_o and_o how_o much_o light_n be_v reflect_v by_o the_o common_a air_n when_o it_o pass_v through_o it_o we_o can_v but_o own_o that_o the_o diminution_n of_o heat_n in_o
earth_n be_v to_o its_o least_o as_o 101._o to_o 100_o by_o which_o one_o semidiameter_n will_v be_v very_o near_o 40._o miles_n great_a than_o the_o other_o a_o difference_n which_o his_o friend_n who_o be_v so_o kind_a as_o to_o write_v he_o a_o letter_n think_v to_o be_v much_o too_o great_a and_o then_o the_o great_a degree_n upon_o the_o meridian_n will_v be_v to_o the_o least_o very_o near_o in_o the_o same_o proportion_n that_o be_v it_o will_v be_v 1_o part_n of_o 100_o great_a than_o the_o other_o but_o this_o difference_n be_v so_o very_o small_a that_o i_o believe_v no_o observation_n in_o order_n to_o this_o discovery_n be_v nice_a enough_o to_o be_v rely_v upon_o for_o where_o the_o length_n of_o a_o degree_n in_o miles_n be_v determine_v either_o by_o the_o resolution_n of_o many_o right-lined_n or_o spherical_a triangle_n it_o be_v scarce_o probable_a that_o the_o error_n in_o observation_n and_o measure_v will_v amount_v to_o less_o than_o â…”_n of_o a_o mile_n though_o therefore_o we_o can_v scarce_o hope_v of_o ever_o attain_v to_o a_o knowledge_n of_o the_o earth_n figure_n by_o measure_v of_o it_o yet_o to_o satisfy_v the_o theorist_n in_o this_o matter_n i_o take_v notice_n of_o one_o dr._n eisenschmidt_n who_o compare_v the_o magnitude_n of_o degree_n observe_v in_o different_a latitude_n and_o find_v that_o they_o be_v great_a at_o the_o equator_fw-la then_o at_o the_o pole_n and_o that_o they_o gradual_o decrease_v from_o the_o equator_fw-la towards_o either_o of_o the_o pole_n from_o which_o he_o infer_v that_o the_o earth_n be_v of_o such_o a_o figure_n as_o the_o theorist_n have_v assign_v to_o it_o whereas_o i_o follow_v the_o theorist_n principle_n demonstrate_v that_o the_o earth_n must_v have_v another_o figure_n and_o that_o the_o diameter_n of_o the_o equator_fw-la must_v be_v great_a than_o its_o axis_n but_o our_o defender_n say_v that_o my_o demonstration_n proceed_v upon_o a_o supposition_n that_o the_o vertical_a line_n or_o the_o line_n of_o gravity_n i_o suppose_v he_o mean_v the_o line_n of_o direction_n of_o heavy_a body_n be_v to_o be_v draw_v direct_o to_o the_o centre_n do_v not_o the_o theorist_n admit_v of_o the_o same_o supposition_n do_v not_o he_o make_v the_o water_n descend_v from_o the_o pole_n to_o the_o equator_fw-la that_o it_o may_v be_v so_o much_o nigh_a to_o the_o centre_n since_o therefore_o according_a to_o the_o theorist_n the_o line_n of_o direction_n of_o heavy_a body_n be_v towards_o the_o centre_n of_o the_o earth_n and_o if_o we_o proceed_v upon_o that_o hypothesis_n where_o the_o degree_n be_v great_a there_o the_o earth_n must_v have_v its_o diameter_n great_a it_o will_v evident_o follow_v from_o eisenschmidt_n observation_n that_o the_o earth_n must_v not_o be_v a_o oblong_a spheroid_fw-fr but_o a_o broad_a one_o and_o have_v its_o axis_n short_a than_o the_o diameter_n of_o its_o equator_fw-la our_o defender_n tell_v we_o that_o dr._n eisenschmidt_n suppose_v the_o vertical_a line_n or_o line_n of_o gravity_n to_o be_v draw_v at_o right_a angle_n to_o the_o tangent_fw-la of_o each_o respective_a horizon_n what_o dr._n eisenschmidt_n do_v real_o suppose_v i_o know_v not_o but_o i_o be_o sure_a he_o can_v suppose_v a_o thing_n more_o absurd_a than_o what_o our_o author_n make_v he_o suppose_v in_o this_o place_n for_o that_o the_o line_n of_o direction_n of_o heavy_a body_n be_v at_o right_a angle_n with_o the_o tangent_fw-la of_o the_o horizon_n be_v to_o i_o such_o a_o incomprehensible_a supposition_n that_o i_o shall_v excuse_v myself_o from_o consider_v of_o it_o till_o the_o defender_n who_o i_o suppose_v will_v have_v we_o think_v he_o understand_v it_o be_v at_o leisure_n to_o explain_v it_o i_o have_v not_o see_v dr._n eisenschmidt_v own_o book_n to_o know_v upon_o what_o principle_n he_o proceed_v it_o be_v say_v in_o the_o acta_fw-la eruditorum_fw-la that_o he_o embrace_v the_o theorist_n opinion_n about_o the_o figure_n of_o the_o earth_n and_o i_o believe_v that_o therefore_o he_o will_v also_o follow_v his_o and_o the_o common_a opinion_n that_o all_o heavy_a body_n tend_v towards_o the_o centre_n of_o the_o earth_n because_o it_o seem_v most_o reasonable_a that_o the_o direction_n of_o heavy_a body_n shall_v be_v towards_o the_o earth_n centre_n of_o gravity_n which_o we_o may_v suppose_v to_o be_v the_o same_o with_o its_o centre_n of_o magnitude_n nor_o can_v we_o suppose_v this_o direction_n to_o be_v any_o way_n change_v but_o upon_o the_o account_n of_o the_o centrifugal_a force_n that_o all_o body_n in_o the_o earth_n have_v acquire_v by_o be_v turn_v round_o the_o earth_n axis_n now_o if_o he_o have_v take_v the_o centrifugal_a force_n into_o his_o consideration_n he_o must_v have_v conclude_v as_o i_o have_v do_v that_o the_o earth_n have_v the_o diameter_n of_o its_o equator_fw-la great_a than_o its_o axis_n which_o be_v still_o contrary_a to_o the_o conclusion_n he_o make_v so_o we_o see_v that_o whether_o this_o author_n suppose_v the_o direction_n of_o heavy_a body_n to_o be_v towards_o the_o centre_n of_o the_o earth_n that_o then_o by_o observation_n he_o must_v have_v conclude_v the_o earth_n to_o have_v be_v of_o a_o broad_a spheroidical_a figure_n or_o whether_o he_o suppose_v the_o line_n of_o direction_n of_o heavy_a body_n to_o be_v change_v by_o a_o centrifugal_a force_n he_o ought_v to_o have_v draw_v the_o same_o consequence_n from_o thence_o though_o not_o indeed_o from_o his_o observation_n of_o a_o degree_n measure_v in_o several_a latitude_n the_o defender_n not_o dare_v to_o trust_v much_o to_o his_o own_o skill_n in_o this_o matter_n have_v obtain_v a_o letter_n from_o a_o gentleman_n of_o his_o acquaintance_n concern_v it_o but_o all_o that_o gentleman_n reason_n depend_v on_o a_o supposition_n which_o the_o theorist_n can_v allow_v viz._n that_o the_o tangent_n of_o the_o ellipse_n be_v in_o the_o horizontal_n plane_n whereas_o it_o be_v evident_a that_o according_a to_o the_o theorist_n hypothesis_n these_o tangent_n can_v never_o represent_v the_o orison_n for_o he_o make_v the_o water_n to_o run_v from_o they_o down_o to_o the_o equator_fw-la now_o it_o be_v certain_a that_o water_n will_v not_o run_v if_o it_o be_v place_v upon_o a_o horizontal_n plane_n and_o if_o we_o be_v to_o make_v water_n run_v any_o way_n we_o must_v always_o make_v its_o channel_n incline_v to_o the_o horizon_n this_o gentleman_n indeed_o reason_n true_o provide_v the_o line_n of_o direction_n of_o heavy_a body_n be_v always_o perpendicular_a to_o a_o plane_n touch_v the_o spheroid_v in_o the_o point_n where_o the_o body_n fall_v but_o as_o i_o have_v already_o observe_v this_o supposition_n be_v not_o to_o be_v admit_v by_o the_o theorist_n and_o we_o can_v no_o more_o suppose_v a_o plane_n touch_v a_o spheroid_v to_o be_v the_o horizon_n of_o the_o point_n where_o it_o touch_v than_o we_o can_v suppose_v a_o man_n who_o stand_v upon_o the_o side_n of_o a_o hill_n to_o have_v that_o plain_a for_o his_o horizon_n which_o touch_v the_o side_n of_o the_o hill_n in_o the_o point_n of_o his_o station_n thus_o i_o think_v i_o have_v plain_o prove_v that_o there_o be_v no_o certain_a way_n to_o determine_v the_o figure_n of_o the_o earth_n from_o the_o observation_n of_o a_o degree_n take_v in_o several_a latitude_n yet_o i_o have_v show_v that_o if_o either_o the_o theorist_n or_o his_o defender_n will_v depend_v upon_o those_o observation_n which_o be_v already_o make_v we_o must_v conclude_v from_o their_o own_o principle_n by_o evident_a demonstration_n that_o the_o earth_n be_v of_o a_o very_a different_a figure_n from_o what_o they_o assign_v it_o the_o next_o way_n the_o theorist_n will_v take_v to_o determine_v the_o earth_n figure_n be_v by_o its_o shadow_n upon_o the_o moon_n but_o it_o be_v easy_a to_o prove_v this_o way_n as_o uncertain_a as_o the_o other_o for_o let_v we_o suppose_v as_o we_o have_v do_v already_o that_o the_o great_a diameter_n of_o the_o earth_n be_v to_o its_o least_o as_o 101._o to_o 100_o which_o be_v a_o much_o great_a proportion_n than_o what_o be_v allow_v either_o by_o mr._n newton_n or_o mons_fw-la hugens_fw-la because_o by_o observation_n the_o diameter_n of_o the_o earth_n shadow_n be_v three_o time_n the_o diameter_n of_o the_o moon_n and_o the_o moon_n appear_v under_o a_o angle_n of_o 30._o minute_n therefore_o the_o diameter_n of_o the_o earth_n shadow_n see_v at_o that_o distance_n will_v appear_v under_o a_o angle_n of_o 90._o minute_n or_o a_o degree_n and_o half_a and_o therefore_o if_o we_o suppose_v the_o diameter_n of_o the_o shadow_n to_o be_v divide_v into_o a_o 100_o equal_a part_n the_o whole_a appear_v under_o a_o angle_n of_o 90._o minute_n every_o one_o of_o these_o part_n will_v be_v see_v under_o a_o angle_n of_o 90_o 100_o or_o 9_o 10_o
not_o the_o hundred_o part_n of_o the_o difficulty_n or_o intricacy_n of_o those_o which_o he_o pretend_v to_o know_v well_o to_o convince_v he_o i_o will_v here_o repeat_v the_o demonstration_n somewhat_o plain_a than_o i_o do_v in_o the_o examination_n let_v we_o suppose_v two_o body_n move_v in_o two_o equal_a cycloid_v it_o be_v demonstrate_v by_o mr._n hugens_n that_o the_o time_n of_o the_o descent_n through_o these_o cycloid_v be_v to_o the_o time_n of_o the_o descent_n through_o the_o axis_n of_o the_o cycloid_v always_o in_o a_o give_v proportion_n viz._n as_o the_o semiperiphery_a of_o a_o circle_n be_v to_o its_o diameter_n and_o therefore_o if_o the_o time_n of_o the_o descent_n or_o vibration_n in_o these_o two_o equal_a cycloid_v shall_v be_v unequal_a the_o time_n of_o the_o descent_n through_o their_o axe_n will_v be_v also_o unequal_a now_o the_o axe_n of_o the_o cycloid_v be_v equal_a and_o the_o time_n in_o which_o the_o body_n move_v through_o they_o unequal_a it_o 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season_n will_v preserve_v the_o same_o elasticity_n but_o grant_v that_o spring_n will_v not_o alter_v their_o elasticity_n in_o different_a climate_n and_o season_n yet_o the_o difference_n between_o the_o gravity_n here_o and_o that_o which_o be_v at_o the_o equator_fw-la be_v so_o small_a the_o one_o be_v to_o the_o other_o as_o 690._o to_o 689._o that_o the_o difference_n of_o their_o effect_n will_v be_v scarce_o sensible_a for_o let_v we_o suppose_v that_o a_o weight_n here_o extend_v a_o spring_n to_o the_o length_n of_o a_o inch_n the_o same_o weight_n will_v not_o draw_v it_o out_o so_o far_o at_o the_o equator_fw-la by_o 1_o 690_o of_o a_o inch_n which_o quantity_n be_v so_o small_a that_o we_o shall_v need_v good_a microscope_n to_o perceive_v it_o the_o next_o experiment_n the_o defender_n will_v try_v be_v that_o of_o the_o barometer_n for_o he_o think_v the_o mercury_n shall_v sink_v much_o low_a there_o than_o with_o we_o or_o indeed_o to_o nothing_o if_o the_o height_n 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but_o it_o will_v be_v a_o great_a paradox_n to_o suppose_v that_o river_n will_v rise_v to_o the_o equator_fw-la and_o with_o the_o same_o celerity_n as_o we_o see_v they_o do_v upon_o a_o ascent_n of_o so_o many_o foot_n these_o be_v the_o defender_n thought_n on_o this_o subject_n it_o be_v scarce_o imaginable_a how_o any_o one_o shall_v be_v so_o forward_o in_o defend_v the_o theory_n that_o appear_v so_o entire_o unacquainted_a with_o natural_a philosophy_n as_o this_o author_n do_v however_o if_o it_o be_v not_o too_o late_o for_o he_o to_o learn_v i_o will_v do_v what_o i_o can_v to_o inform_v he_o and_o consider_v what_o he_o have_v say_v his_o first_o thought_n that_o there_o shall_v be_v a_o different_a horizon_n as_o to_o the_o heaven_n the_o earth_n and_o the_o sea_n east_n and_o west_n
little_o more_o than_o three_o to_o one_o their_o difference_n in_o that_o case_n arise_v only_o from_o the_o more_o direct_a action_n of_o the_o sun_n in_o summer_n than_o in_o winter_n whereas_o in_o the_o present_a case_n our_o summer_n heat_n be_v to_o our_o winter_n heat_n in_o a_o great_a proportion_n than_o that_o of_o seven_o to_o one_o all_o the_o effect_n that_o will_v follow_v from_o this_o attraction_n be_v this_o both_o the_o fluid_a on_o the_o abyss_n and_o the_o central_n solid_a will_v be_v attract_v by_o the_o comet_n but_o the_o fluid_a on_o the_o abyss_n be_v near_a to_o it_o than_o the_o other_o will_v be_v more_o strong_o attract_v and_o because_o the_o solid_a crust_n by_o reason_n of_o the_o firmness_n and_o union_n of_o its_o part_n can_v move_v fast_o to_o the_o comet_n than_o the_o central_n solid_a do_v it_o be_v evident_a from_o thence_o that_o it_o must_v be_v press_v only_o by_o the_o difference_n of_o attraction_n or_o by_o that_o force_n by_o which_o 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