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Word A Word B Word C Word D Occurrence Frequency Band MI MI Band Prominent
water_n drop_v egg_n great_a 25 3 2.1418 3 false
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ID Title Author Corrected Date of Publication (TCP Date of Publication) STC Words Pages
A44323 Micrographia, or, Some physiological descriptions of minute bodies made by magnifying glasses with observations and inquiries thereupon / by R. Hooke ... Hooke, Robert, 1635-1703. 1665 (1665) Wing H2620; ESTC R18004 297,091 291

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be_v move_v or_o enlighten_v and_o consequent_o that_o light_n do_v destroy_v the_o colour_n so_o likewise_o will_v the_o ray_n anob_n lose_v its_o red_a because_o the_o adjacent_a medium_n be_v move_v or_o enlighten_v but_o the_o other_o side_n of_o the_o ray_n that_o be_v adjacent_a to_o the_o dark_a namely_o aho_n will_v preserve_v its_o blue_a entire_a and_o these_o ray_n must_v be_v so_o far_o produce_v as_o till_o a_o and_o br_n cut_v each_o other_o before_o there_o will_v be_v any_o green_a produce_v from_o these_o propriety_n well_o consider_v may_v be_v deduce_v the_o reason_n of_o all_o the_o phaenomena_n of_o the_o prism_n and_o of_o the_o globule_n or_o drop_n of_o water_n which_o conduce_v to_o the_o production_n of_o the_o rainbow_n next_o for_o the_o impression_n they_o make_v on_o the_o retina_fw-la we_o will_v further_o examine_v this_o hypothesis_n suppose_v therefore_o abcdef_a in_o the_o five_o figure_n to_o represent_v the_o ball_n of_o the_o eye_n on_o the_o cornea_n of_o which_o abc_n two_o ray_n gach_n and_o kcai_n which_o be_v the_o terminate_a ray_n of_o a_o luminous_a body_n fall_v be_v by_o the_o refraction_n thereof_o collect_v or_o converge_v into_o two_o point_n at_o the_o bottom_n of_o the_o eye_n now_o because_o these_o terminate_a ray_n and_o all_o the_o intermediate_v one_o which_o come_v from_o any_o part_n of_o the_o luminous_a body_n be_v suppose_v by_o some_o sufficient_a refraction_n before_o they_o enter_v the_o eye_n to_o have_v their_o pulse_n make_v oblique_a to_o their_o progression_n and_o consequent_o each_o ray_n to_o have_v potential_o superinduce_v two_o propriety_n or_o colour_n viz._n a_o red_a on_o the_o one_o side_n and_o a_o blue_n on_o the_o other_o which_o notwithstanding_o be_v never_o actual_o manifest_a but_o when_o this_o or_o that_o ray_n have_v the_o one_o or_o the_o other_o side_n of_o it_o border_v on_o a_o dark_a or_o unmoved_a medium_n therefore_o as_o soon_o as_o these_o ray_n be_v enter_v into_o the_o eye_n and_o so_o have_v one_o side_n of_o each_o of_o they_o border_v on_o a_o dark_a part_n of_o the_o humour_n of_o the_o eye_n they_o will_v each_o of_o they_o actual_o exhibit_v some_o colour_n therefore_o adc_a the_o production_n gach_n will_v exhibit_v a_o blue_n because_o the_o side_n cd_o be_v adjacent_a to_o the_o dark_a medium_n cqdc_n but_o nothing_o of_o a_o red_a because_o its_o side_n ad_fw-la be_v adjacent_a to_o the_o enlighten_v medium_n adfa_n and_o all_o the_o ray_n that_o from_o the_o point_n of_o the_o luminous_a body_n be_v collect_v on_o the_o part_n of_o the_o retina_fw-la between_o d_o and_o f_o shall_v have_v their_o blue_n so_o much_o the_o more_o dilute_v by_o how_o much_o the_o far_o these_o point_n of_o collection_n be_v
a_o kind_n of_o artificial_a silk_n out_o of_o some_o glutinous_a substance_n that_o may_v equalise_v natural_a silk_n obseru._n 5._o of_o water_a silk_n the_o great_a unaccurateness_n of_o artificial_a work_n a_o description_n of_o a_o piece_n of_o water_a silk_n a_o explication_n of_o the_o cause_n of_o the_o phaenomena_n the_o way_n by_o which_o that_o operation_n be_v perform_v some_o other_o phaenomena_n mention_v depend_v on_o the_o same_o cause_n obseru._n 6._o of_o glass-cane_n the_o exceed_a smallness_n of_o some_o of_o these_o body_n by_o what_o mean_v the_o hollowness_n of_o these_o small_a pipe_n be_v discover_v several_a phaenomena_n of_o it_o mention_v a_o attempt_n to_o explicate_v they_o from_o the_o congruity_n and_o incongruity_n of_o body_n what_o those_o propriety_n be_v a_o hypothetical_a explication_n of_o fluidity_n of_o the_o fluidity_n of_o the_o air_n and_o several_a other_o phaenomena_n of_o it_o of_o congruity_n &_o incongruity_n illustrate_v with_o several_a experiment_n what_o effect_n may_v be_v ascribe_v to_o these_o property_n a_o explication_n of_o the_o roundness_n of_o the_o surface_n of_o fluid_a body_n how_o the_o ingress_n of_o fluid_a body_n into_o a_o small_a hole_n of_o a_o heterogeneous_a body_n be_v hinder_v by_o incongruity_n a_o multitude_n of_o phaenomena_n explicable_a hereby_o several_a query_n propound_v 1._o concern_v the_o propagation_n of_o light_n through_o differ_v medium_n 2._o concern_v gravity_n 3._o concern_v the_o roundness_n of_o the_o sun_n moon_n and_o planet_n 4._o concern_v the_o roundness_n of_o fruit_n stone_n and_o divers_a artificial_a body_n his_o highness_n prince_n rupert_n way_n of_o make_v shoot_v of_o the_o roundness_n of_o hail_n of_o the_o grain_n of_o kettering_n stone_n and_o of_o the_o spark_n of_o fire_n 5._o concern_v springiness_n and_o tenacity_n 6._o concern_v the_o original_n of_o fountain_n several_a history_n and_o experiment_n relate_v thereto_o 7._o concern_v the_o dissolution_n of_o body_n in_o liquor_n 8._o concern_v the_o universality_n of_o this_o principle_n what_o method_n be_v take_v in_o make_v and_o apply_v experiment_n the_o explication_n of_o filtration_n and_o several_a other_o phaenomena_n such_o as_o the_o motion_n of_o body_n on_o the_o surface_n of_o liquor_n several_a experiment_n mention_v to_o this_o purpose_n of_o the_o height_n to_o which_o the_o water_n may_v rise_v in_o these_o pipe_n and_o a_o conjecture_n about_o the_o juice_n of_o vegetable_n &_o the_o use_n of_o their_o pore_n a_o further_a explication_n of_o congruity_n and_o a_o attempt_n of_o solve_v the_o phaenomena_n of_o the_o strange_a experiment_n of_o the_o suspension_n of_o the_o mercury_n at_o a_o much_o great_a height_n than_o thirty_o inch_n the_o efficacy_n of_o immediate_a contact_n and_o the_o reason_n of_o it_o obseru._n 7._o of_o glass_n drop_n several_a experiment_n make_v with_o these_o small_a body_n the_o manner_n of_o the_o break_n and_o flaw_v of_o they_o explicate_v by_o figure_n what_o other_o body_n will_v be_v flaw_v much_o in_o the_o same_o manner_n some_o other_o trial_n and_o a_o description_n of_o the_o drop_v themselves_o some_o conjecture_n at_o the_o cause_n of_o the_o phaenomena_n endeavour_v to_o be_v make_v probable_a by_o several_a argument_n and_o experiment_n a_o experiment_n of_o the_o expansion_n of_o water_n by_o heat_n and_o shrink_v by_o cold_a the_o like_a propriety_n suppose_v in_o glassdrop_v and_o what_o effect_n proceed_v from_o they_o the_o seven_o proposition_n on_o which_o the_o conjecture_n be_v ground_v experiment_n to_o show_v that_o body_n expand_v by_o heat_n the_o manner_n of_o make_v thermometer_n and_o the_o instrument_n for_o graduate_v they_o the_o manner_n of_o graduate_v they_o and_o their_o use_n other_o experiment_n to_o prove_v the_o expansion_n of_o body_n by_o heat_n four_o experimental_a argument_n to_o prove_v the_o expansion_n of_o glass_n by_o heat_n further_o prove_v by_o the_o experiment_n of_o boil_a alabaster_n which_o be_v explicate_v a_o explication_n of_o the_o contract_n of_o heat_a glass_n upon_o cool_v a_o explication_n how_o the_o part_n of_o the_o glass_n become_v bend_v by_o sudden_a cold_a and_o how_o keep_v from_o extricate_a themselves_o by_o the_o contignation_n of_o the_o glass_n drop_n which_o be_v further_o explicate_v by_o another_o experiment_n make_v with_o a_o hollow_a glass_n ball_n the_o reason_n of_o the_o fly_v asunder_o of_o the_o part_n further_o explicate_v that_o it_o be_v probable_a these_o body_n may_v have_v many_o flaw_n though_o not_o visible_a and_o why_o how_o a_o gradual_a heat_n and_o cool_a do_v put_v the_o part_n of_o glass_n and_o other_o harden_a body_n into_o a_o loose_a texture_n obseru._n 8._o of_o fiery_a spark_n the_o occasion_n and_o manner_n of_o make_v this_o experiment_n divers_a observation_n set_v down_o in_o order_n to_o the_o find_v out_o the_o reason_n some_o conjecture_n concern_v it_o which_o be_v endeavour_v to_o be_v explicate_v and_o confirm_v by_o several_a experiment_n and_o reason_n the_o hypothesis_n a_o little_a further_o explicate_v some_o observation_n about_o the_o globular_a figure_n and_o a_o experiment_n of_o reduce_v the_o file_n of_o tin_n or_o lead_v to_o exact_o round_a globule_n obseru._n 9_o of_o fantastical_a colour_n the_o texture_n of_o muscovy_n glass_n its_o figure_n what_o other_o body_n be_v like_o it_o that_o it_o exhibit_v several_a colour_n and_o how_o several_a observation_n and_o experiment_n about_o those_o colour_n the_o reason_n why_o on_o this_o occasion_n the_o nature_n of_o colour_n be_v inquire_v into_o a_o conjecture_n at_o the_o reason_n of_o these_o colour_n explicate_v by_o several_a experiment_n and_o reason_n first_o by_o continual_a cleave_v the_o body_n till_o it_o become_v colour_v second_o by_o produce_v all_o kind_n of_o colour_n with_o two_o flat_a plate_n of_o glass_n three_o by_o blow_v glass_n so_o thin_a in_o the_o 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the_o instantaneous_a motion_n of_o light_n the_o manner_n of_o the_o propagation_n of_o light_n through_o they_o of_o the_o homogeniety_n and_o heterogeniety_n of_o transparent_a medium_n and_o what_o effect_n they_o cause_n on_o the_o ray_n of_o light_n explicate_v by_o a_o figure_n a_o examination_n of_o the_o refraction_n of_o the_o ray_n by_o a_o plain_a surface_n which_o cause_v colour_n a_o examination_n of_o the_o like_a effect_n produce_v by_o a_o spherical_a surface_n the_o use_n that_o may_v be_v make_v of_o these_o experiment_n for_o the_o examination_n of_o several_a hyphothese_n of_o colour_n des_fw-mi cartes_n hypothesis_n examine_v some_o difficulty_n take_v notice_n of_o in_o it_o what_o seem_v most_o likely_a to_o be_v the_o cause_n of_o colour_n that_o propriety_n be_v endeavour_v to_o be_v show_v in_o a_o glass_n ball_n that_o the_o reflection_n be_v not_o necessary_a to_o produce_v colour_n nor_o a_o double_a refraction_n the_o hypothesis_n further_o examine_v both_o in_o the_o pellucid_n medium_fw-la and_o in_o the_o eye_n the_o definition_n of_o colour_n and_o a_o further_a explication_n and_o examination_n of_o the_o propriety_n of_o laminated_a body_n by_o what_o mean_v they_o conduce_v to_o the_o production_n of_o colour_n obseru._n 10._o of_o metalline_a colour_n that_o all_o colour_n seem_v to_o be_v cause_v by_o refraction_n a_o hypothesis_n consonant_n hereunto_o explicate_v by_o figure_n how_o several_a experiment_n of_o the_o sudden_a change_n of_o colour_n by_o chemical_a liquor_n may_v be_v hereby_o explicate_v how_o many_o way_n such_o chemical_a liquor_n may_v alter_v the_o colour_n of_o body_n objection_n make_v against_o this_o hypothesis_n of_o two_o colour_n only_o endeavour_v to_o be_v answer_v by_o several_a reason_n and_o experiment_n the_o reason_n why_o some_o colour_n be_v capable_a of_o be_v dilute_v other_o not_o what_o those_o be_v that_o probable_o the_o particle_n of_o most_o metalline_a colour_n be_v transparent_a for_o this_o several_a argument_n and_o observation_n be_v recite_v how_o colour_n become_v incapable_a of_o dilute_v explicate_v by_o
glass_n have_v a_o double_a defect_n the_o one_o that_o very_o few_o of_o they_o be_v exact_o true_a wrought_v the_o other_o that_o even_o of_o those_o that_o be_v best_o among_o they_o none_o will_v admit_v a_o sufficient_a number_n of_o ray_n to_o magnify_v the_o object_n beyond_o a_o determinate_a bigness_n against_o which_o inconvenience_n the_o only_a remedy_n i_o have_v hitherto_o meet_v with_o be_v these_o first_o for_o microscope_n where_o the_o object_n we_o view_v be_v near_o and_o within_o our_o power_n the_o best_a way_n of_o make_v it_o appear_v bright_a in_o the_o glass_n be_v to_o cast_v a_o great_a quantity_n of_o light_n on_o it_o by_o mean_n of_o convex_a glass_n for_o thereby_o though_o the_o aperture_n be_v very_o small_a yet_o there_o will_v throng_v in_o through_o it_o such_o multitude_n that_o a_o object_n will_v by_o this_o mean_n endure_v to_o be_v magnify_v as_o much_o again_o as_o it_o will_v be_v without_o it_o the_o way_n for_o do_v which_o be_v this_o i_o 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side_n be_v figure_v according_a to_o the_o concavity_n of_o the_o glass_n but_o its_o upper_a surface_n which_o by_o reason_n of_o its_o gravity_n not_o consider_v at_o all_o the_o air_n above_o it_o and_o so_o neither_o the_o congruity_n or_o incongruity_n of_o either_o of_o they_o to_o the_o glass_n shall_v be_v terminate_v by_o part_n of_o a_o sphere_n who_o diameter_n shall_v be_v the_o same_o with_o that_o of_o the_o earth_n which_o to_o our_o sense_n will_v appear_v a_o straight_a line_n as_o fge_v or_o which_o by_o reason_n of_o its_o have_v a_o great_a congruity_n to_o glass_n than_o air_n have_v not_o consider_v its_o gravity_n will_v be_v thrust_v into_o a_o concave_a sphere_n as_o chb_v who_o diameter_n will_v be_v the_o same_o with_o that_o of_o the_o concavity_n of_o the_o vessel_n its_o upper_a surface_n i_o say_v by_o reason_n of_o its_o have_v a_o great_a gravity_n than_o the_o air_n and_o have_v likewise_o a_o great_a congruity_n to_o glass_n then_o the_o air_n have_v 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stick_v to_o it_o but_o have_v a_o concave_a surface_n like_o water_n and_o rise_v high_o in_o a_o less_o then_o in_o a_o great_a pipe_n in_o all_o these_o example_n it_o be_v evident_a that_o there_o be_v a_o extraordinary_a and_o adventitious_a force_n by_o which_o the_o globular_a figure_n of_o the_o contain_v heterogeneous_a fluid_n be_v alter_v neither_o can_v it_o be_v imagine_v how_o it_o shall_v otherwise_o be_v of_o any_o other_o figure_n then_o globular_a for_o be_v by_o the_o heterogeneous_a fluid_n equal_o protrude_v every_o way_n whatsoever_o part_n be_v protuberant_a will_v be_v thereby_o depress_v from_o this_o cause_n it_o be_v that_o in_o its_o effect_n it_o do_v very_o much_o resemble_v a_o round_a spring_n such_o as_o a_o hoop_n for_o as_o in_o a_o round_a spring_n there_o be_v require_v a_o additional_a pressure_n against_o two_o opposite_a side_n to_o reduce_v it_o into_o a_o oval_a form_n or_o to_o force_v it_o in_o between_o the_o side_n of_o a_o hole_n who_o diameter_n be_v less_o than_o that_o of_o the_o spring_n there_o must_v be_v a_o considerable_a force_n or_o protrusion_n against_o the_o concave_n or_o inner_a side_n of_o the_o spring_n so_o to_o alter_v this_o spherical_a constitution_n of_o a_o include_v fluid_a body_n there_o be_v require_v more_o pressure_n against_o opposite_a side_n to_o reduce_v it_o into_o a_o oval_a and_o to_o press_v it_o into_o a_o hole_n less_o in_o diameter_n then_o itself_o it_o require_v a_o great_a protrusion_n against_o all_o the_o other_o side_n what_o degree_n of_o force_n be_v requisite_a to_o reduce_v they_o into_o long_a and_o long_a oval_n or_o to_o press_v they_o into_o less_o and_o less_o hole_n i_o have_v not_o yet_o experimental_o calculate_v but_o thus_o much_o by_o experiment_n i_o find_v in_o general_a that_o there_o be_v always_o require_v a_o great_a pressure_n to_o close_v they_o into_o long_a oval_n or_o protude_n they_o into_o small_a hole_n the_o necessity_n and_o reason_n of_o this_o be_v it_o requisite_a i_o can_v easy_o explain_v but_o be_v not_o so_o necessary_a and_o require_v more_o room_n and_o time_n than_o i_o have_v for_o it_o at_o present_a i_o shall_v here_o omit_v it_o and_o proceed_v to_o show_v that_o this_o may_v be_v present_o find_v true_a if_o experiment_n be_v make_v with_o a_o round_a spring_n the_o way_n of_o make_v which_o trial_n be_v obvious_a enough_o and_o with_o the_o fluid_a body_n of_o mercury_n air_n &c_n &c_n the_o way_n of_o try_v which_o will_v be_v somewhat_o more_o difficult_a and_o therefore_o i_o shall_v in_o brief_a describe_v it_o he_o therefore_o that_o will_v try_v with_o air_n must_v first_o be_v provide_v of_o a_o glass-pipe_n make_v of_o the_o shape_n of_o that_o in_o the_o five_o figure_n whereof_o the_o side_n ab_fw-la represent_v a_o straight_a tube_n of_o about_o three_o foot_n long_o c_o represent_v another_o part_n of_o it_o which_o consist_v of_o a_o round_a bubble_n so_o order_v that_o there_o be_v leave_v a_o passage_n or_o hole_n at_o the_o top_n into_o which_o may_v be_v fasten_v with_o cement_n several_a small_a pipe_n of_o determinate_a cylindrical_a cavity_n as_o let_v the_o hollow_a of_o f._n be_v ¼_n of_o a_o inch_n g._n be_v ⅙_n of_o a_o inch_n h._n be_v ⅛_n of_o a_o inch_n i._o be_v 1_o 12_o of_o a_o inch_n k._n be_v 1_o 16_o of_o a_o inch_n l._n be_v 1_o 24_o of_o a_o inch_n m._n be_v 1_o 34_o of_o a_o inch_n &c_n &c_n there_o may_v be_v add_v as_o many_o more_o as_o the_o experimenter_n shall_v think_v fit_a with_o hole_n continual_o decrease_v by_o know_a quantity_n so_o far_o as_o his_o sense_n be_v able_a to_o help_v he_o i_o say_v so_o far_o because_o there_o may_v be_v make_v pipe_n so_o small_a that_o it_o will_v be_v impossible_a to_o
perceive_v the_o perforation_n with_o one_o naked_a eye_n though_o by_o the_o help_n of_o a_o microscope_n it_o may_v easy_o enough_o be_v perceive_v nay_o i_o have_v make_v a_o pipe_n perforate_v from_o end_n to_o end_n so_o small_a that_o with_o my_o naked_a eye_n i_o can_v very_o hardly_o see_v the_o body_n of_o it_o insomuch_o that_o i_o have_v be_v able_a to_o knit_v it_o up_o into_o a_o knot_n without_o break_v and_o more_o accurate_o examine_v one_o with_o my_o microscope_n i_o find_v it_o not_o so_o big_a as_o a_o sixteen_o part_n of_o one_o of_o the_o small_a hair_n of_o my_o head_n which_o be_v of_o the_o small_a and_o fine_a sort_n of_o hair_n so_o that_o sixteen_o of_o these_o pipe_n bind_v faggot-wi●e_a together_o will_v but_o have_v equalise_v one_o single_a hair_n how_o small_a therefore_o must_v its_o perforation_n be_v it_o appear_v to_o i_o through_o the_o microscope_n to_o be_v a_o proportionable_o thick-sided_n pipe_n to_o proceed_v then_o for_o the_o trial_n of_o the_o experiment_n the_o experimenter_n must_v place_v the_o tube_n ab_fw-la perpendicular_a and_o fill_v the_o pipe_n f_o cement_v into_o the_o hole_n e_o with_o water_n but_o leave_v the_o bubble_n c_o bookful_n of_o air_n and_o then_o gentle_o pour_v in_o water_n into_o the_o pipe_n ab_fw-la he_o must_v observe_v diligent_o how_o high_a the_o water_n will_v rise_v in_o it_o before_o it_o protrude_v the_o bubble_n of_o air_n c_o through_o the_o narrow_a passage_n of_o f_o and_o denote_v exact_o the_o height_n of_o the_o cylinder_n of_o water_n then_o cement_n in_o a_o second_o pipe_n as_o g_o and_o fill_v it_o with_o water_n he_o may_v proceed_v as_o with_o the_o former_a denote_v likewise_o the_o height_n of_o the_o cylinder_n of_o water_n able_a to_o protrude_v the_o bubble_n c_o through_o the_o passage_n of_o g_o the_o like_a may_v he_o do_v with_o the_o next_o pipe_n and_o the_o next_o etc._n etc._n as_o far_o as_o he_o be_v able_a then_o compare_v the_o several_a height_n of_o the_o cylinder_n with_o the_o several_a hole_n through_o which_o each_o cylinder_n do_v force_v the_o air_n have_v due_a regard_n to_o the_o cylinder_n of_o water_n in_o the_o small_a tube_n it_o will_v be_v very_o easy_a to_o determine_v what_o force_n be_v requisite_a to_o press_v the_o air_n into_o such_o and_o such_o a_o hole_n or_o to_o apply_v it_o to_o our_o present_a experiment_n how_o much_o of_o the_o pressure_n of_o the_o air_n be_v take_v off_o by_o its_o ingress_n into_o small_a and_o small_a hole_n from_o the_o application_n of_o which_o to_o the_o enter_v of_o the_o air_n into_o the_o big_a hole_n of_o the_o vessel_n and_o into_o the_o small_a hole_n of_o the_o pipe_n we_o shall_v clear_o find_v that_o there_o be_v a_o great_a pressure_n of_o the_o air_n upon_o the_o water_n in_o the_o vessel_n or_o great_a pipe_n than_o there_o be_v upon_o that_o in_o the_o lesser_a pipe_n for_o since_o the_o pressure_n of_o the_o air_n every_o way_n be_v find_v to_o be_v equal_a that_o be_v as_o much_o as_o be_v able_a to_o press_v up_o and_o sustain_v a_o cylinder_n of_o quicksilver_n of_o two_o foot_n and_o a_o half_a high_a or_o thereabouts_o and_o since_o of_o this_o pressure_n so_o many_o more_o degree_n be_v require_v to_o force_v the_o air_n into_o a_o small_a than_o into_o a_o great_a hole_n that_o be_v full_a of_o a_o more_o congruous_a fluid_n and_o last_o since_o those_o degree_n that_o be_v requisite_a to_o press_v it_o in_o be_v thereby_o take_v off_o from_o the_o air_n within_o and_o the_o air_n within_o leave_v with_o so_o many_o degree_n of_o pressure_n less_o than_o the_o air_n without_o it_o will_v follow_v that_o the_o air_n in_o the_o less_o tube_n or_o pipe_n will_v have_v less_o pressure_n against_o the_o superficies_n of_o the_o water_n therein_o than_o the_o air_n in_o the_o big_a which_o be_v the_o minor_a proposition_n to_o be_v prove_v the_o conclusion_n therefore_o will_v necessary_o follow_v viz._n that_o this_o unequal_a pressure_n of_o the_o air_n cause_v by_o its_o ingress_n into_o unequal_a hole_n be_v a_o cause_n sufficient_a to_o produce_v this_o effect_n without_o the_o help_n of_o any_o other_o concurrent_a and_o therefore_o be_v probable_o the_o principal_n if_o not_o the_o only_a cause_n of_o these_o phaenomena_n this_o therefore_o be_v thus_o explain_v there_o will_v be_v divers_a phaenomena_n explicable_a thereby_o as_o the_o rise_n of_o liquor_n in_o a_o filtre_n the_o rise_n of_o spirit_n of_o wine_n oil_n melt_v tallow_n etc._n etc._n in_o the_o week_n of_o a_o lamp_n though_o make_v of_o small_a wire_n thread_n of_o asbestus_n string_n of_o glass_n or_o the_o like_a the_o rise_n of_o liquor_n in_o a_o sponge_n piece_n of_o bread_n sand_n etc._n etc._n perhaps_o also_o the_o ascend_a of_o the_o sap_n in_o tree_n and_o plant_n through_o their_o small_a and_o some_o of_o they_o imperceptible_a pore_n of_o which_o i_o have_v say_v more_o on_o another_o occasion_n at_o least_o the_o pass_v of_o it_o out_o of_o the_o earth_n into_o their_o root_n and_o indeed_o upon_o the_o consideration_n of_o this_o principle_n multitude_n of_o other_o use_n of_o it_o occur_v to_o i_o which_o i_o have_v not_o yet_o so_o well_o examine_v and_o digest_v as_o to_o propound_v for_o axiom_n but_o only_o as_o query_n and_o conjecture_n which_o may_v serve_v as_o hint_n towards_o some_o further_a discovery_n as_o first_o upon_o the_o consideration_n of_o the_o congruity_n and_o incongruity_n of_o body_n as_o to_o touch_v i_o find_v also_o the_o like_a congruity_n and_o incongruity_n if_o i_o may_v so_o speak_v as_o to_o the_o transmit_v of_o the_o ray_n of_o light_n for_o as_o in_o this_o regard_n water_n not_o now_o to_o mention_v other_o liquor_n seem_v near_o of_o affinity_n to_o glass_n then_o air_n and_o air_n than_o quicksilver_n whence_o a_o oblique_a ray_n out_o of_o glass_n will_v pass_v into_o water_n with_o very_o little_a refraction_n from_o the_o perpendicular_a but_o none_o out_o of_o glass_n into_o air_n except_v a_o direct_a will_v pass_v without_o a_o very_a great_a refraction_n from_o the_o perpendicular_a nay_o any_o oblique_a ray_n under_o thirty_o degree_n will_v not_o be_v admit_v into_o the_o air_n at_o all_o and_o quicksilver_n will_v neither_o admit_v oblique_a or_o direct_a but_o reflect_v all_o seem_v as_o to_o the_o transmit_v of_o the_o ray_n of_o light_n to_o be_v of_o a_o quite_o differ_v constitution_n from_o that_o of_o air_n water_n glass_n etc._n etc._n and_o to_o resemble_v most_o those_o opacous_a and_o strong_a reflect_a body_n of_o metal_n so_o also_o as_o to_o the_o property_n of_o cohesion_n or_o congruity_n water_n seem_v to_o keep_v the_o same_o order_n be_v more_o congruous_a to_o glass_n then_o air_n and_o air_n than_o quicksilver_n a_o second_o thing_n which_o be_v hint_v to_o i_o by_o the_o consideration_n of_o the_o include_v fluid_n globular_a form_n cause_v by_o the_o protrusion_n of_o the_o ambient_fw-la heterogeneous_a fluid_n be_v whether_o the_o phaenomena_n of_o gravity_n may_v not_o by_o this_o mean_n be_v explain_v by_o suppose_v the_o globe_n of_o earth_n water_n and_o air_n to_o be_v include_v with_o a_o fluid_a heterogeneous_a to_o all_o and_o each_o of_o they_o so_o subtle_a as_o not_o only_o to_o be_v every_o where_o intersperse_v through_o the_o air_n or_o rather_o the_o air_n through_o it_o but_o to_o pervade_v the_o body_n of_o glass_n and_o even_o the_o close_a metal_n by_o which_o mean_v it_o may_v endeavour_v to_o detrude_v all_o earthly_a body_n as_o far_o from_o it_o as_o it_o can_v and_o partly_o thereby_o and_o partly_o by_o other_o of_o its_o property_n may_v move_v they_o towards_o the_o centre_n of_o the_o earth_n now_o that_o there_o be_v some_o such_o fluid_a i_o can_v produce_v many_o experiment_n and_o reason_n that_o do_v seem_v to_o prove_v it_o but_o because_o it_o will_v ask_v some_o time_n and_o room_n to_o set_v they_o down_o and_o explain_v they_o and_o to_o consider_v and_o answer_v all_o the_o objection_n many_o whereof_o i_o foresee_v that_o may_v be_v allege_v against_o it_o i_o shall_v at_o present_a proceed_v to_o other_o query_n content_v myself_o to_o have_v here_o only_o give_v a_o hint_n of_o what_o i_o may_v say_v more_o elsewhere_o a_o three_o query_n than_o be_v whether_o the_o heterogeneity_n of_o the_o ambient_fw-la fluid_fw-la may_v not_o be_v account_v a_o secondary_a cause_n of_o the_o roundness_n or_o globular_a form_n of_o the_o great_a body_n of_o the_o world_n such_o as_o be_v those_o of_o the_o sun_n star_n and_o planet_n the_o substance_n of_o each_o of_o which_o seem_v altogether_o heterogeneous_a to_o the_o circum-ambient_a fluid_a aether_n and_o of_o this_o i_o shall_v say_v more_o in_o the_o observation_n of_o the_o moon_n a_o four_o be_v
those_o small_a parcel_n be_v make_v so_o glow_v hot_a that_o it_o be_v melt_v into_o a_o vitrum_fw-la which_o by_o the_o ambient_fw-la air_n be_v thrust_v into_o the_o form_n of_o a_o ball._n a_o five_o thing_n which_o i_o think_v worth_a examination_n be_v whether_o the_o motion_n of_o all_o kind_n of_o spring_n may_v not_o be_v reduce_v to_o the_o principle_n whereby_o the_o include_v heterogeneous_a fluid_n seem_v to_o be_v move_v or_o to_o that_o whereby_o two_o solid_n as_o marble_n or_o the_o like_a be_v thrust_v and_o keep_v together_o by_o the_o ambient_fw-la fluid_fw-la a_o six_o thing_n be_v whether_o the_o rise_n and_o ebullition_n of_o the_o water_n out_o of_o spring_n and_o fountain_n which_o lie_v much_o high_a from_o the_o centre_n of_o the_o earth_n than_o the_o superficies_n of_o the_o sea_n from_o whence_o it_o seem_v to_o be_v derive_v may_v not_o be_v explicate_v by_o the_o rise_n of_o water_n in_o a_o small_a pipe_n for_o the_o sea-water_n be_v strain_v through_o the_o pore_n or_o cranny_n of_o the_o earth_n be_v as_o it_o be_v include_v in_o little_a pipe_n where_o the_o pressure_n of_o the_o air_n have_v not_o so_o great_a a_o power_n to_o resist_v its_o rise_n but_o examine_v this_o way_n and_o find_v in_o it_o several_a difficulty_n almost_o irremovable_a i_o think_v upon_o a_o way_n that_o will_v much_o more_o natural_o and_o conceivable_o explain_v it_o which_o be_v by_o this_o follow_a experiment_n i_o take_v a_o glass-tube_n of_o the_o form_n of_o that_o describe_v in_o the_o six_o figure_n and_o choose_v two_o heterogeneous_a fluid_n such_o as_o water_n and_o oil_n i_o pour_v in_o as_o much_o water_n as_o fill_v up_o the_o pipe_n as_o high_a as_o ab_fw-la then_o put_v in_o some_o oil_n into_o the_o tube_n ac_fw-la i_o depress_v the_o superficies_n a_o of_o the_o water_n to_o e_o and_o by_o raise_v to_o g_o which_o be_v not_o so_o high_a perpendicular_o as_o the_o superficies_n of_o the_o oil_n f_o by_o the_o space_n fi_n wherefore_o the_o proportion_n of_o the_o gravity_n of_o these_o two_o liquor_n be_v as_o gh_v to_o fe_o this_o experiment_n i_o try_v with_o several_a other_o liquor_n and_o particular_o with_o fresh_a water_n and_o salt_n which_o i_o make_v by_o dissolve_v salt_n in_o warm_a water_n which_o two_n though_o they_o be_v nothing_o heterogeneous_a yet_o before_o they_o will_v perfect_o mix_v one_o with_o another_o i_o make_v trial_n of_o the_o experiment_n nay_o let_v the_o tube_n wherein_o i_o try_v the_o experiment_n remain_v for_o many_o day_n i_o observe_v they_o not_o to_o mix_v but_o the_o superficies_n of_o the_o fresh_a be_v rather_o more_o than_o less_o elevate_v above_o that_o of_o the_o salt_n now_o the_o proportion_n of_o the_o gravity_n of_o sea-water_n to_o that_o of_o riverwater_n according_a to_o stevinus_n and_o varenius_n and_o as_o i_o have_v since_o find_v pretty_a true_a by_o make_v trial_n myself_o be_v as_o 46._o to_o 45._o that_o be_v 46._o ounce_n of_o the_o salt_n water_n will_v take_v up_o no_o more_o room_n than_o 45._o of_o the_o fresh_a or_o reciprocal_o 45_o pint_n of_o salt-water_n weigh_v as_o much_o as_o 46_o of_o fresh_a but_o i_o find_v the_o proportion_n of_o brine_n to_o fresh_a water_n to_o be_v near_o 13_o to_o 12_o suppose_v therefore_o ghm_n to_o represent_v the_o sea_n and_o fi_n the_o height_n of_o the_o mountain_n above_o the_o superficies_n of_o the_o sea_n fm_n a_o cavern_n in_o the_o earth_n begin_v at_o the_o bottom_n of_o the_o sea_n and_o terminate_v at_o the_o top_n of_o the_o mountain_n lm_o the_o sand_n at_o the_o bottom_n through_o which_o the_o water_n be_v as_o it_o be_v strain_v so_o as_o that_o the_o fresh_a part_n be_v only_o permit_v to_o transude_v and_o the_o saline_n keep_v back_o if_o therefore_o the_o proportion_n of_o gm_n to_o fm_n be_v as_o 45_o to_o 46_o then_o may_v the_o cylinder_n of_o salt-water_n gm_n make_v the_o cylinder_n of_o freshwater_n to_o rise_v as_o high_a as_o e_z and_o to_o run_v over_o at_o n._n i_o can_v here_o stand_v to_o examine_v or_o confute_v their_o opinion_n who_o make_v the_o depth_n of_o the_o sea_n below_o its_o superficies_n to_o be_v no_o more_o perpendicular_o measure_v then_o the_o height_n of_o the_o mountain_n above_o it_o it_o be_v enough_o for_o i_o to_o say_v there_o be_v no_o one_o of_o those_o that_o have_v assert_v it_o have_v experimental_o know_v the_o perpendicular_a of_o either_o nor_o shall_v i_o here_o determine_v whether_o there_o may_v not_o be_v many_o other_o cause_n of_o the_o separation_n of_o the_o fresh_a water_n from_o the_o salt_n as_o perhaps_o some_o part_n of_o the_o earth_n through_o which_o it_o be_v to_o pass_v may_v contain_v a_o salt_n that_o mix_v and_o unite_n with_o the_o sea-salt_n may_v precipitate_v it_o much_o after_o the_o same_o manner_n as_o the_o alkalizate_n and_o acid_n salt_n mix_v and_o precipitate_v each_o other_o in_o the_o preparation_n of_o tartarum_fw-la vitriolatum_fw-la i_o know_v not_o also_o whether_o the_o exceed_a cold_a that_o must_v necessary_o be_v at_o the_o bottom_n of_o the_o water_n may_v not_o help_v towards_o this_o separation_n for_o we_o find_v that_o warm_a water_n be_v able_a to_o dissolve_v and_o contain_v more_o salt_n than_o the_o same_o cold_a insomuch_o that_o brines_n strong_o impregnate_v by_o heat_n if_o let_v cool_a do_v suffer_v much_o of_o their_o salt_n to_o subside_n and_o crystallize_v about_o the_o bottom_n and_o side_n i_o know_v not_o also_o whether_o the_o exceed_a pressure_n of_o the_o part_n of_o the_o water_n one_o against_o another_o may_v not_o keep_v the_o salt_n from_o descend_v to_o the_o very_a bottom_n as_o find_v little_a or_o no_o room_n to_o insert_v itself_o between_o those_o part_n protrude_v so_o violent_o together_o or_o else_o squeeze_v it_o upward_o into_o the_o superior_a part_n of_o the_o sea_n where_o it_o may_v more_o easy_o obtain_v room_n for_o itself_o among_o the_o part_n of_o the_o water_n by_o reason_n that_o there_o be_v more_o heat_n and_o less_o pressure_n to_o this_o opinion_n i_o be_v somewhat_o the_o more_o induce_v by_o the_o relation_n i_o have_v meet_v with_o in_o geograhical_a writer_n of_o draw_v fresh_a water_n from_o the_o bottom_n of_o the_o sea_n which_o be_v salt_n above_o i_o can_v now_o stand_v to_o examine_v whether_o this_o natural_a perpetual_a motion_n may_v not_o artificial_o be_v imitate_v nor_o can_v i_o stand_v to_o answer_v the_o objection_n which_o may_v be_v make_v against_o this_o my_o supposition_n as_o first_o how_o it_o come_v to_o pass_v that_o there_o be_v sometime_o salt_n spring_v much_o high_a than_o the_o superficies_n of_o the_o water_n and_o second_o why_o spring_n do_v not_o run_v fast_o and_o slow_a according_a to_o the_o vary_a height_n make_v of_o the_o cylinder_n of_o sea-water_n by_o the_o ebb_a and_o flow_v of_o the_o sea_n as_o to_o the_o first_o in_o short_a i_o say_v the_o fresh_a water_n may_v receive_v again_o a_o saline_a tincture_n near_o the_o superficies_n of_o the_o earth_n by_o pass_v through_o some_o salt_n mine_n or_o else_o many_o of_o the_o saline_a part_n of_o the_o sea_n may_v be_v keep_v back_o though_o not_o all_o and_o as_o to_o the_o second_o the_o same_o spring_n may_v be_v feed_v and_o supply_v by_o divers_a cavern_n come_v from_o very_o far_o distant_a part_n of_o the_o sea_n so_o as_o that_o it_o may_v in_o one_o place_n be_v high_a in_o another_o low_a water_n and_o so_o by_o that_o mean_v the_o spring_n may_v be_v equal_o supply_v at_o all_o time_n or_o else_o the_o cavern_n may_v be_v so_o straight_o and_o narrow_a that_o the_o water_n not_o have_v so_o ready_a and_o free_a passage_n through_o it_o can_v upon_o so_o short_a and_o quick_a mutation_n of_o pressure_n be_v able_a to_o produce_v any_o sensible_a effect_n at_o such_o a_o distance_n beside_o that_o to_o confirm_v this_o hypothesis_n there_o be_v many_o example_n find_v in_o natural_a historian_n of_o spring_n that_o do_v ebb_n and_o flow_v like_o the_o sea_n as_o particular_o those_o record_v by_o the_o learned_a camden_n and_o after_o he_o by_o speed_n to_o be_v find_v in_o this_o island_n one_o of_o which_o they_o relate_v to_o be_v on_o the_o top_n of_o a_o mountain_n by_o the_o small_a village_n kilken_a in_o flintshire_n maris_fw-la aemulus_fw-la qui_fw-la statis_fw-la temporibus_fw-la svas_fw-la evomit_fw-la &_o resorbet_fw-la aquas_fw-la which_o at_o certain_a time_n rise_v and_o fall_v after_o the_o manner_n of_o the_o sea_n a_o second_o in_o caermardenshire_n near_o caermarden_n at_o a_o place_n call_v cantre_v bichan_n qui_n ut_fw-la scribit_fw-la giraldus_n naturali_fw-la die_fw-la ●is_fw-la undis_fw-la deficiens_fw-la &_o toties_fw-la exuberans_fw-la marinos_fw-la imitatur_fw-la instabilitates_fw-la that_o twice_o in_o four_o and_o twenty_o hour_n
ebb_v and_o flow_v resemble_v the_o unstable_a motion_n of_o the_o sea_n the_o phaenomena_n of_o which_o two_o may_v be_v easy_o make_v out_o by_o suppose_v the_o cavern_n by_o which_o they_o be_v feed_v to_o arise_v from_o the_o bottom_n of_o the_o next_o sea_n a_o three_o be_v a_o well_o upon_o the_o river_n ogmore_n in_o glamorganshire_n and_o near_o unto_o newton_n of_o which_o camden_n relate_v himself_o to_o be_v certify_v by_o a_o letter_n from_o a_o learned_a friend_n of_o his_o that_o observe_v it_o fons_n abest_fw-la hinc_fw-la etc._n etc._n the_o letter_n be_v a_o little_a too_o long_o to_o be_v insert_v but_o the_o substance_n be_v this_o that_o this_o well_o ebb_v and_o flow_v quite_o contrary_a to_o the_o flow_a and_o ebb_v of_o the_o sea_n in_o those_o part_n for_o it_o be_v almost_o empty_a at_o full_a sea_n but_o full_a at_o low_a water_n this_o may_v happen_v from_o the_o channel_n by_o which_o it_o be_v supply_v which_o may_v come_v from_o the_o bottom_n of_o a_o sea_n very_o remote_a from_o those_o part_n and_o where_o the_o tide_n be_v much_o differ_v from_o those_o of_o the_o approximate_a shore_n a_o four_o lie_v in_o westmoreland_n near_o the_o river_n loder_n qui_fw-la instar_fw-la euripi_fw-la saepius_fw-la in_o die_fw-la reciprocantibus_fw-la undis_fw-la fluit_fw-la &_o refluit_fw-la which_o ebb_v and_o flow_v many_o time_n a_o day_n this_o may_v proceed_v from_o its_o be_v supply_v from_o many_o channel_n come_v from_o several_a part_n of_o the_o sea_n lie_v sufficient_o distant_a asunder_o to_o have_v the_o time_n of_o high-water_n differ_v enough_o one_o from_o the_o other_o so_o as_o that_o whensoever_o it_o shall_v be_v high_a water_n over_o any_o of_o those_o place_n where_o these_o channel_n begin_v it_o shall_v likewise_o be_v so_o in_o the_o well_o but_o this_o be_v but_o a_o supposition_n a_o seven_o query_n be_v whether_o the_o dissolution_n or_o mix_v of_o several_a body_n whether_o fluid_a or_o solid_a with_o saline_a or_o 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quarter_n from_o any_o side_n and_o you_o shall_v perceive_v it_o by_o degree_n to_o make_v perpendicular_o towards_o the_o near_a part_n of_o the_o side_n and_o the_o near_a it_o approach_v the_o fast_a to_o be_v move_v the_o reason_n of_o which_o phaenomenon_n will_v be_v find_v no_o other_o than_o this_o that_o the_o air_n have_v a_o great_a pressure_n against_o the_o middle_n of_o the_o superficies_n than_o it_o have_v against_o those_o part_n that_o approach_v near_o and_o be_v contiguous_a to_o the_o side_n now_o that_o the_o pressure_n be_v great_a may_v as_o i_o show_v before_o in_o the_o explication_n of_o the_o three_o figure_n be_v evince_v from_o the_o flat_n of_o the_o water_n in_o the_o middle_n which_o arise_v from_o the_o gravity_n of_o the_o under_o fluid_a for_o since_o as_o i_o show_v before_o if_o there_o be_v no_o gravity_n in_o the_o under_o fluid_a or_o that_o it_o be_v equal_a to_o that_o of_o the_o upper_a the_o terminate_a surface_n will_v be_v spherical_a 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much_o big_a than_o real_o they_o be_v and_o this_o may_v be_v in_o good_a part_n remove_v by_o put_v the_o drop_n under_o the_o surface_n of_o clear_a water_n for_o by_o that_o mean_v most_o part_n of_o the_o refraction_n of_o the_o convex_a surface_n of_o the_o drop_n be_v destroy_v and_o the_o bubble_n will_v appear_v much_o small_a and_o this_o by_o the_o by_o mind_v i_o of_o the_o appear_a magnitude_n of_o the_o aperture_n of_o the_o iris_fw-la or_o pupil_n of_o the_o eye_n which_o though_o it_o appear_v and_o be_v therefore_o judge_v very_o large_a be_v yet_o not_o above_o a_o quarter_n of_o the_o bigness_n it_o appear_v of_o by_o the_o lenticular_a refraction_n of_o the_o cornea_n the_o cause_n of_o all_o which_o phaenomena_n i_o imagine_v to_o be_v no_o other_o than_o this_o that_o the_o part_n of_o the_o glass_n be_v by_o the_o excessive_a heat_n of_o the_o fire_n keep_v off_o and_o separate_v one_o from_o another_o and_o thereby_o put_v into_o a_o kind_n of_o sluggish_a 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some_o deluge_n inundation_n earthquake_n or_o some_o such_o other_o mean_n come_v to_o be_v throw_v to_o that_o place_n and_o there_o to_o be_v fill_v with_o some_o kind_n of_o mudd_n or_o day_n or_o petrify_a water_n or_o some_o other_o substance_n which_o in_o tract_n of_o time_n have_v be_v settle_v together_o and_o harden_a in_o those_o shelly_a mould_n into_o those_o shape_a substance_n we_o now_o find_v they_o that_o the_o great_a and_o thin_a end_n of_o these_o shell_n by_o that_o earthquake_n or_o what_o ever_o other_o extraordinary_a cause_n it_o be_v that_o bring_v they_o thither_o be_v break_v off_o and_o that_o many_o other_o be_v otherwise_o break_v bruise_a and_o disfigure_v that_o these_o shell_n which_o be_v thus_o spirally_v and_o separate_v with_o diaphragme_n be_v some_o kind_n of_o nautili_n or_o porcelain_n shell_n and_o that_o other_o be_v shell_n of_o cockle_n muscle_n periwinkle_n scolops_n etc._n etc._n of_o various_a sort_n that_o these_o shell_n in_o many_o 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judaici_n and_o multitude_n of_o other_o whereof_o mention_n be_v make_v in_o aldrovandus_n wormius_n and_o other_o writer_n of_o mineral_n obseru._n xviii_o of_o the_o schematisme_n or_o texture_n of_o cork_n and_o of_o the_o cell_n and_o pore_n of_o some_o other_o such_o frothy_a body_n i_o take_v a_o good_a clear_a piece_n of_o cork_n and_o with_o a_o penknife_n sharpen_v as_o keen_a as_o a_o razor_n i_o cut_v a_o piece_n of_o it_o off_o and_o thereby_o leave_v the_o surface_n of_o it_o exceed_v smooth_a then_o examine_v it_o very_o diligent_o with_o a_o microscope_n i_o thought_n i_o can_v perceive_v it_o to_o appear_v a_o little_a porous_a but_o i_o can_v not_o so_o plain_o distinguish_v they_o as_o to_o be_v sure_a that_o they_o be_v pore_n much_o less_o what_o figure_n they_o be_v of_o but_o judge_v from_o the_o lightness_n and_o yield_a quality_n of_o the_o cork_n that_o certain_o the_o texture_n can_v not_o be_v so_o curious_a but_o that_o possible_o if_o i_o can_v use_v 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and_o recommend_v it_o to_o the_o more_o diligent_a enquiry_n and_o examination_n of_o such_o as_o can_v be_v master_n both_o of_o leisure_n and_o conveniency_n for_o such_o a_o enquiry_n sch●m_n 13_o obseru._n xxi_o of_o moss_n and_o several_a other_o small_a vegetative_a substance_n moss_n be_v a_o plant_n that_o the_o wise_a of_o king_n think_v neither_o unworthy_a his_o speculation_n nor_o his_o pen_n and_o though_o among_o plant_n it_o be_v in_o bulk_n one_o of_o the_o small_a yet_o it_o be_v not_o the_o least_o considerable_a for_o as_o to_o its_o shape_n it_o may_v compare_v for_o the_o beauty_n of_o it_o with_o any_o plant_n that_o grow_v and_o bear_v a_o much_o big_a breadth_n it_o have_v a_o root_n almost_o like_o a_o seedy_a parsnep_n furnish_v with_o small_a string_n and_o sucker_n which_o be_v all_o of_o they_o fine_o branch_v like_o those_o of_o the_o root_n of_o much_o big_a vegetable_n out_o of_o this_o spring_v the_o stem_n or_o body_n of_o the_o plant_n which_o be_v 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seem_v to_o be_v somewhat_o of_o kin_n to_o it_o in_o other_o particular_n also_o from_o the_o top_n of_o the_o leaf_n there_o shoot_v out_o a_o small_a white_a and_o transparent_a hair_n or_o thorn_n this_o stem_n in_o time_n come_v to_o shoot_v out_o into_o a_o long_a round_o and_o even_a stalk_n which_o by_o cut_v transvers_o when_o dry_a i_o manifest_o find_v to_o be_v a_o stiff_a hard_a and_o hollow_a cane_n or_o reed_n without_o any_o kind_n of_o knot_n or_o stop_v from_o its_o bottom_n where_o the_o leave_v encompass_v it_o to_o the_o top_n on_o which_o there_o grow_v a_o large_a seed_n case_n a_o cover_v with_o a_o thin_a and_o more_o whitish_a skin_n b_o terminate_v in_o a_o long_a thorny_a top_n which_o at_o first_o cover_v all_o the_o case_n and_o by_o degree_n as_o that_o swell_v the_o skin_n cleave_v and_o at_o length_n fall_v off_o with_o its_o thorny_a top_n and_o all_o which_o be_v a_o part_n of_o it_o and_o leave_v the_o seed_n case_n to_o ripen_v and_o by_o degree_n 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i_o have_v almost_o think_v my_o former_a observation_n deficient_a though_o indeed_o upon_o further_a examination_n i_o have_v find_v even_o those_o also_o to_o confirm_v they_o these_o thread_n therefore_o i_o find_v to_o be_v a_o congery_n of_o small_a laminae_fw-la or_o plate_n as_o e_o e_o e_o e_o e_o etc._n etc._n each_o of_o they_o shape_v much_o like_o this_o of_o a_o b_o c_o d_o in_o the_o four_o figure_n the_o part_n a_o c_o be_v a_o ridge_n prominency_n or_o stem_n and_o b_o and_o d_o the_o corner_n of_o two_o small_a thin_a plate_n that_o grow_v unto_o the_o small_a stalk_n in_o the_o middle_n so_o that_o they_o make_v a_o kind_n of_o little_a feather_n each_o of_o these_o plate_n lie_v one_o close_a to_o another_o almost_o like_o a_o company_n of_o slope_v ridge_n or_o gutter_n tile_n they_o grow_v on_o each_o side_n of_o the_o stalk_n opposite_a to_o one_o another_o by_o two_o and_o two_o from_o top_n to_o bottom_n in_o the_o manner_n express_v in_o the_o five_o figure_n 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the_o perpendicular_a that_o be_v make_v in_o they_o of_o a_o ray_n of_o light_n out_o of_o the_o air_n that_o have_v the_o same_o inclination_n upon_o either_o of_o their_o superficies_n so_o as_o to_o the_o business_n of_o refraction_n spirit_n of_o wine_n be_v a_o more_o dense_a body_n than_o water_n it_o have_v be_v find_v by_o a_o accurate_a instrument_n that_o measure_v the_o angle_n of_o refraction_n to_o minute_n that_o for_o the_o same_o refracted_a angle_n of_o 30_o 00_o in_o both_o those_o medium_n the_o angle_n of_o incidence_n in_o water_n be_v but_o 41°_n 3_o '_o 5._o but_o the_o angle_n of_o the_o incidence_n in_o the_o trial_n with_o spirit_n of_o wine_n be_v 42°_n 45_o '_o but_o as_o to_o gravity_n water_n be_v a_o more_o dense_a body_n than_o spirit_n of_o wine_n for_o the_o proportion_n of_o the_o same_o water_n to_o the_o same_o very_a well_o rectify_v spirit_n of_o wine_n be_v as_o 21._o to_o 19_o so_o as_o to_o refraction_n water_n be_v more_o dense_n then_o ice_n for_o i_o have_v find_v by_o a_o most_o certain_a experiment_n which_o i_o exhibit_v before_o divers_a illustrious_a person_n of_o the_o royal_a society_n that_o the_o refraction_n of_o water_n be_v great_a than_o that_o of_o ice_n though_o some_o considerable_a author_n have_v affirm_v the_o contrary_a and_o though_o the_o ice_n be_v a_o very_a hard_a and_o the_o water_n a_o very_a fluid_a body_n that_o the_o former_a of_o the_o two_o precede_a proposition_n be_v true_a may_v be_v manifest_v by_o several_a experiment_n as_o first_o if_o you_o take_v any_o two_o liquor_n differ_v from_o one_o another_o in_o density_n but_o yet_o such_o as_o will_v ready_o mix_v as_o salt_n water_n or_o brine_n &_o fresh_a almost_o any_o kind_n of_o salt_n dissolve_v in_o water_n and_o filtrate_v so_o that_o it_o be_v clear_a spirit_n of_o wine_n and_o water_n nay_o spirit_n of_o wine_n and_o spirit_n of_o wine_n one_o more_o high_o rectify_v then_o the_o other_o and_o very_o many_o other_o liquor_n if_o i_o say_v you_o take_v any_o two_o of_o these_o liquor_n and_o mix_v they_o in_o a_o glass_n viol._n against_o one_o side_n of_o which_o you_o have_v fix_v or_o glue_v a_o small_a round_a piece_n of_o paper_n and_o shake_v they_o well_o together_o so_o that_o the_o part_n of_o they_o may_v be_v somewhat_o disturb_v and_o move_v up_o and_o down_o you_o endeavour_v to_o see_v that_o round_a piece_n of_o paper_n through_o the_o body_n of_o the_o liquor_n you_o shall_v plain_o perceive_v the_o figure_n to_o wave_v and_o to_o be_v indent_v much_o after_o the_o same_o manner_n as_o the_o limb_n of_o the_o sun_n through_o a_o telescope_n seem_v to_o be_v save_v only_o that_o the_o mutation_n here_o be_v much_o quick_a and_o if_o in_o steed_n of_o this_o big_a circle_n you_o take_v a_o very_a small_a spot_n and_o fasten_v and_o view_v it_o as_o the_o former_a you_o will_v find_v it_o to_o appear_v much_o like_o the_o twinkle_n of_o the_o star_n though_o much_o quick_a which_o two_o 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thousand_o to_o one_o if_o we_o suppose_v the_o part_n of_o the_o cylinder_n of_o the_o atmosphere_n to_o be_v every_o where_o of_o a_o equal_a density_n we_o shall_v as_o he_o there_o deduce_v find_v it_o extend_v to_o the_o height_n of_o thirty_o five_o thousand_o foot_n or_o seven_o mile_n but_o because_o by_o these_o experiment_n we_o have_v somewhat_o confirm_v the_o hypothesis_n of_o the_o reciprocal_a proportion_n of_o the_o elater_n to_o the_o extension_n we_o shall_v find_v that_o by_o suppose_v this_o cylinder_n of_o the_o atmosphere_n divide_v into_o a_o thousand_o part_n each_o of_o which_o be_v equivalent_a to_o thirty_o five_o foot_n or_o seven_o geometrical_a pace_n that_o be_v each_o of_o these_o division_n contain_v as_o much_o air_n as_o be_v suppose_v in_o a_o cylinder_n near_o the_o earth_n of_o equal_a diameter_n and_o thirty_o five_o foot_n high_a we_o shall_v find_v the_o lowermost_a to_o press_v against_o the_o surface_n of_o the_o earth_n with_o the_o whole_a 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history_n which_o this_o relation_n may_v make_v the_o more_o probable_a and_o that_o be_v in_o the_o 2._o chapter_n of_o the_o 4._o book_n of_o his_o natural_a history_n of_o brasil_n where_o he_o say_v porro_fw-la praeter_fw-la tot_fw-la documenta_fw-la fertilitatis_fw-la circa_fw-la vegetabilia_fw-la &_o sensitiva_fw-la marina_fw-la telluris_fw-la aemula_fw-la accidit_fw-la &_o illud_fw-la quod_fw-la paucis_fw-la à_fw-la paranambucensi_fw-la milliaribus_fw-la piscatoris_fw-la uncum_fw-la citra_fw-la intentionem_fw-la contingat_fw-la infigi_fw-la vadis_fw-la petrosis_n &_o loco_fw-la piscis_fw-la spongia_fw-la coralla_fw-la aliasque_fw-la arbusculas_fw-la marinas_fw-la capi_fw-la inter_fw-la haec_fw-la inusitatae_fw-la formae_fw-la prodit_fw-la spongiosa_fw-la arbuscula_fw-la sesquipedis_fw-la longitudinis_fw-la brevioribus_fw-la radicibus_fw-la lapideis_fw-la nitens_fw-la