side_n the_o nucleus_n or_o ball_n in_o the_o middle_n of_o the_o head_n which_o i_o have_v call_v the_o star_n i_o conceive_v to_o be_v dissolve_v equal_o on_o all_o side_n and_o the_o part_n which_o be_v dissolve_v or_o separate_v from_o it_o i_o conceive_v to_o fly_v every_o way_n from_o the_o centre_n of_o it_o with_o pretty_a near_o equal_a celerity_n or_o power_n like_v so_o many_o blaze_a granade_n or_o fire-ball_n these_o continue_v their_o motion_n so_o far_o towards_o the_o way_n they_o be_v shoot_v till_o the_o levitation_n from_o the_o body_n of_o the_o sun_n deflect_v they_o upward_o or_o in_o opposition_n to_o the_o sun_n into_o a_o parabolic_a curve_v in_o which_o parabolic_v curve_v every_o single_a particle_n continue_v its_o motion_n till_o it_o be_v whole_o burn_v out_o or_o dissolve_v into_o the_o aether_n these_o be_v continual_o succeed_v by_o new_a separation_n from_o the_o aforesaid_a body_n in_o the_o same_o manner_n as_o it_o be_v observable_a in_o a_o burn_a steam_a or_o smoke_a body_n in_o our_o air_n or_o a_o dissolve_v body_n encompass_v with_o its_o proper_a menstruum_fw-la as_o i_o before_o mention_v and_o will_v so_o continue_v until_o the_o whole_a be_v at_o length_n dissolve_v into_o the_o aether_n through_o which_o it_o pass_v it_o have_v be_v demonstrate_v by_o torricellius_n of_o bullet_n or_o other_o body_n cast_v or_o shoot_v upward_o that_o the_o same_o or_o equal_a bullet_n discharge_v or_o shoot_v out_o from_o the_o same_o point_n with_o the_o same_o degree_n of_o strength_n but_o with_o differ_v degree_n of_o inclination_n to_o the_o horizon_n each_o of_o they_o shall_v be_v move_v in_o a_o parabolical_a line_n and_o every_o one_o of_o those_o parabolical_a line_n shall_v touch_v a_o parabolical_a line_n who_o axis_fw-la be_v the_o perpendicular_a and_o who_o apex_n be_v distant_a from_o the_o say_a point_n the_o full_a altitude_n of_o the_o perpendicular_a shot_n so_o that_o suppose_v in_o the_o twenty_o second_o figure_n a_o to_o be_v the_o point_n from_o whence_o all_o the_o shot_n be_v make_v with_o equal_a velocity_n ac_fw-la the_o great_a height_n of_o the_o perpendicular_a shot_n and_o ad_fw-la the_o great_a horizontal_n random_n at_o 45_o degree_n of_o inclination_n and_o suppose_v edcde_v a_o parabola_fw-la pass_v through_o those_o point_n dcd_v all_o the_o shot_n make_v with_o equal_a bullet_n with_o equal_a velocity_n from_o a_o but_o with_o all_o variety_n of_o inclination_n between_o the_o perpendicular_a upward_o and_o the_o perpendicular_a downward_o that_o touch_v the_o say_v parabolical_a line_n and_o consequent_o if_o there_o be_v a_o indefinite_a number_n of_o such_o ball_n continual_o flow_v out_o of_o the_o point_n a_o with_o equal_a degree_n of_o celerity_n every_o way_n disperse_v themselves_o equal_o in_o orbem_fw-la the_o whole_a aggregate_v of_o such_o a_o emanation_n will_v make_v a_o solid_a parabolical_a conoeid_v edcde_v now_o about_o the_o point_n a_o if_o we_o suppose_v a_o sphere_n as_o bbbb_v and_o from_o this_o sphere_n a_o indefinite_a number_n of_o such_o equal_a ball_n be_v throw_v off_o perpendicular_o to_o the_o superficies_n of_o it_o from_o every_o point_n thereof_o with_o equal_a celerity_n at_o their_o leave_v it_o those_o emanation_n will_v form_v also_o a_o conoeid_v which_o will_v be_v very_o near_o the_o same_o with_o the_o former_a and_o if_o this_o ball_n in_o the_o middle_n be_v suppose_v a_o burn_a and_o shine_a body_n and_o that_o all_o these_o emanation_n have_v every_o one_o of_o they_o equal_a light_n in_o proportion_n to_o the_o globe_n bbbba_n the_o effect_n produce_v hereby_o will_v perfect_o resemble_v the_o appearance_n and_o figure_n of_o comet_n if_o at_o least_o the_o parabolical_a conoeid_v be_v invert_v which_o will_v somewhat_o explain_v the_o manner_n how_o i_o conceive_v the_o figure_n of_o the_o cometical_a body_n be_v natural_o and_o most_o proportionable_o form_v for_o if_o the_o effect_n of_o such_o a_o emanation_n of_o shine_a body_n be_v examine_v it_o will_v very_o plain_o exhibit_v the_o exact_a and_o true_a apparent_a figure_n of_o comet_n as_o they_o may_v be_v see_v through_o a_o good_a telescope_n which_o be_v to_o i_o a_o very_a great_a argument_n that_o it_o be_v the_o genuine_a cause_n of_o its_o shape_n and_o figure_n now_o though_o the_o comet_n appearance_n be_v this_o way_n cause_v and_o so_o a_o man_n may_v conceive_v the_o globous_a body_n will_v in_o a_o little_a time_n by_o so_o copious_a a_o emanation_n be_v consume_v yet_o i_o do_v not_o believe_v that_o it_o do_v in_o a_o short_a time_n waste_v and_o disperse_v the_o whole_a ball_n nor_o can_v i_o conceive_v that_o the_o disappear_v of_o those_o blaze_a body_n towards_o the_o latter_a end_n do_v depend_v upon_o their_o dissolution_n though_o possible_o that_o may_v somewhat_o diminish_v they_o but_o that_o rather_o be_v to_o be_v ascribe_v to_o their_o distance_n and_o position_n in_o respect_n of_o we_o though_o this_o i_o remember_v i_o observe_v very_o manifest_o in_o that_o of_o 1664._o that_o the_o body_n towards_o the_o latter_a end_n of_o its_o appear_v be_v very_o much_o less_o in_o proportion_n to_o the_o radiation_n about_o it_o than_o it_o seem_v to_o be_v at_o the_o beginning_n but_o whether_o that_o may_v not_o be_v partly_o ascribe_v to_o the_o great_a distance_n it_o then_o be_v from_o we_o and_o the_o turn_n of_o the_o head_n pretty_a near_o towards_o we_o and_o thence_o the_o spread_a of_o the_o tail_n appear_v beyond_o it_o may_v add_v to_o the_o breadth_n of_o the_o radiation_n about_o the_o nucleus_n i_o will_v not_o positive_o determine_v now_o though_o for_o explication_n sake_n i_o have_v compare_v the_o part_n separate_v from_o the_o body_n of_o the_o comet_n to_o blaze_a granade_n or_o fire-ball_n yet_o i_o will_v not_o be_v understand_v to_o suppose_v these_o part_n so_o separate_v to_o be_v of_o any_o very_a large_a bulk_n for_o i_o see_v no_o necessity_n to_o suppose_v they_o big_a than_o the_o atom_n of_o smoke_n or_o the_o particle_n of_o any_o other_o steam_a body_n or_o than_o the_o part_n of_o the_o air_n which_o make_v the_o body_n of_o it_o appear_v thick_a and_o hazy_a nor_o do_v i_o believe_v that_o all_o the_o light_n of_o the_o star_n head_n and_o blaze_n do_v depend_v only_o upon_o the_o shine_a of_o the_o dissolve_v body_n and_o particle_n thereof_o but_o i_o do_v suppose_v that_o it_o do_v proceed_v both_o from_o the_o reflection_n of_o the_o sunbeam_n from_o those_o part_n and_o also_o from_o a_o innate_a and_o momentaneous_a light_n produce_v by_o the_o action_n of_o dissolution_n wrought_v on_o the_o part_n by_o the_o encompass_v aether_n it_o may_v possible_o seem_v very_o difficult_a to_o suppose_v that_o the_o dissolution_n of_o the_o part_n of_o the_o nucleus_n by_o the_o encompass_v aether_n shall_v cause_v or_o impress_v so_o violent_a a_o motion_n into_o the_o separate_a part_n as_o to_o make_v they_o depart_v from_o it_o to_o the_o space_n of_o four_o or_o five_o diameter_n before_o it_o be_v overpower_v by_o the_o power_n of_o levitation_n from_o the_o body_n of_o the_o sun_n and_o so_o deflect_v into_o a_o parabolical_a line_n upward_o it_o may_v likewise_o seem_v strange_a to_o suppose_v that_o the_o aether_n shall_v have_v such_o power_n in_o it_o as_o first_o to_o dissolve_v a_o body_n into_o itself_o and_o second_o to_o cause_v a_o shine_a and_o three_o to_o cause_v a_o levitation_n of_o the_o dissolve_a part_n upward_o whereas_o i_o suppose_v before_o and_o i_o think_v it_o be_v very_o manifest_a that_o they_o cause_v a_o gravitation_n downward_o towards_o the_o centre_n of_o the_o sun_n but_o to_o these_o for_o explication_n i_o answer_v that_o we_o need_v not_o go_v far_o for_o instance_n to_o make_v these_o thing_n probable_a the_o atmosphere_n about_o the_o earth_n as_o i_o have_v former_o mention_v in_o my_o micrographia_fw-la i_o take_v to_o be_v nothing_o else_o but_o the_o dissolution_n of_o the_o part_n of_o the_o earth_n into_o the_o encompass_v aether_n for_o the_o proof_n of_o which_o i_o can_v bring_v many_o argument_n be_v it_o here_o a_o proper_a place_n by_o which_o i_o can_v most_o evident_o demonstrate_v the_o thing_n to_o be_v as_o i_o have_v assert_v it_o be_v here_o evident_a that_o this_o aether_n do_v take_v up_o the_o particle_n of_o body_n to_o a_o very_a great_a distance_n from_o the_o surface_n from_o which_o they_o be_v separate_v and_o it_o do_v not_o only_o raise_v they_o but_o sustein_v they_o at_o those_o height_n nor_o be_v this_o peculiar_a only_o to_o the_o aether_n when_o a_o menstruum_fw-la but_o to_o all_o dissolve_v menstruum_n in_o general_n as_o to_o give_v one_o instance_n in_o stead_n of_o many_o we_o find_v that_o gold_n the_o heavy_a of_o all_o terrestrial_a body_n we_o yet_o know_v be_v dissolve_v by_o aqua_fw-la regis_fw-la
be_v take_v up_o into_o it_o and_o keep_v suspend_v therein_o though_o the_o part_n of_o the_o gold_n be_v fifteen_o time_n heavy_a than_o the_o part_n of_o the_o aqua_fw-la regis_fw-la so_o pit-coal_n though_o very_o heavy_a be_v yet_o take_v up_o into_o the_o air_n and_o keep_v suspend_v therein_o though_o it_o will_v be_v find_v to_o be_v some_o thousand_o of_o time_n more_o ponderous_a than_o the_o menstruum_fw-la of_o the_o air_n that_o keep_v it_o suspend_v many_o reason_n i_o can_v produce_v to_o show_v the_o great_a power_n of_o the_o aether_n and_o the_o universality_n of_o its_o activity_n almost_o in_o all_o sensible_a motion_n but_o reserve_v they_o for_o another_o discourse_n hereafter_o i_o shall_v at_o present_a only_o mention_v those_o supposition_n which_o seem_v to_o have_v the_o great_a difficulty_n in_o this_o theory_n viz._n how_o the_o dissolution_n of_o the_o part_n of_o the_o star_n by_o the_o encompass_v aether_n shall_v cause_v light_n and_o second_o how_o it_o shall_v cause_v a_o actual_a levitation_n of_o the_o dissolve_v particle_n upward_o for_o the_o explication_n of_o these_o two_o difficulty_n i_o must_v at_o present_a crave_v favour_n to_o explain_v they_o by_o example_n take_v from_o operation_n of_o nature_n in_o the_o atmosphere_n wherein_o we_o live_v very_o similar_v and_o analogous_a to_o they_o first_o for_o the_o production_n of_o light_n we_o find_v that_o the_o air_n encompass_v the_o steam_n of_o body_n prepare_v by_o heat_n or_o otherwise_o and_o make_v fit_a for_o dissolution_n do_v so_o operate_v upon_o they_o as_o to_o make_v they_o fly_v and_o part_v asunder_o with_o a_o very_a impetuous_a motion_n insomuch_o that_o the_o small_a particle_n or_o atom_n of_o the_o dissolve_a body_n do_v not_o only_o leave_v one_o another_o but_o depart_v and_o dart_v out_o with_o so_o great_a a_o impetuosity_n as_o to_o drive_v off_o all_o the_o encompass_v air_n from_o their_o centre_n from_o whence_o they_o fly_v and_o this_o i_o take_v to_o be_v the_o cause_n not_o only_o of_o their_o light_n but_o also_o of_o their_o levity_n upward_o this_o may_v be_v see_v very_o plain_o by_o the_o small_a part_n of_o crackle_v char-coal_n which_o upon_o the_o blow_v they_o with_o bellows_o and_o so_o crowd_v a_o great_a quantity_n of_o the_o fresh_a menstruum_fw-la on_o they_o fly_v and_o dart_v asunder_o with_o great_a celerity_n and_o noise_n but_o be_v abundant_o more_o evident_a in_o the_o kindle_v of_o gunpowder_n where_o the_o impetuosity_n be_v so_o very_o great_a as_o to_o drive_v away_o not_o only_o all_o the_o encompass_v air_n but_o all_o other_o body_n though_o never_o so_o solid_a that_o hinder_v its_o expansion_n in_o the_o perform_n of_o which_o operation_n the_o aether_n have_v a_o great_a share_n as_o i_o may_v hereafter_o show_v it_o be_v very_o probable_a that_o the_o aether_n in_o the_o same_o manner_n dissolve_v the_o particle_n of_o the_o star_n cause_v the_o atom_n thereof_o to_o fly_v asunder_o with_o so_o great_a a_o impetuosity_n as_o to_o leave_v a_o vacuity_n even_o of_o the_o part_n of_o the_o aether_n which_o fly_v asunder_o do_v not_o only_a cause_n light_n by_o impress_v on_o the_o aether_n a_o stroke_n or_o pulse_n which_o propagate_v every_o way_n in_o orbem_fw-la but_o make_v such_o a_o agitation_n of_o the_o the_o aether_n as_o cause_v a_o rarefaction_n in_o the_o part_n thereof_o whilst_o the_o part_n that_o be_v once_o actual_o separate_v by_o continual_a rebound_v one_o against_o another_o before_o they_o come_v to_o be_v at_o rest_n and_o quiet_o to_o touch_v each_o other_o prolong_v that_o first_o separation_n or_o vacuity_n between_o they_o this_o explication_n though_o it_o be_v somewhat_o difficult_a yet_o i_o hope_v it_o be_v intelligible_a and_o may_v be_v with_o probability_n enough_o suppose_v to_o be_v the_o true_a cause_n of_o the_o appearance_n whilst_o there_o be_v nothing_o therein_o suppose_v which_o be_v not_o manifest_o the_o method_n of_o nature_n in_o other_o operation_n and_o though_o the_o supposition_n even_o of_o the_o aether_n may_v seem_v to_o be_v a_o chimaera_n and_o groundless_a yet_o have_v i_o now_o time_n i_o can_v by_o many_o very_a sensible_a and_o undeniable_a experiment_n prove_v the_o existence_n and_o reality_n thereof_o and_o that_o it_o do_v actual_o produce_v not_o only_o as_o sensible_a effect_n as_o these_o i_o have_v name_v but_o very_o much_o the_o same_o and_o many_o other_o much_o more_o cosiderable_a which_o by_o philosopher_n have_v hitherto_o be_v ascribe_v to_o quite_o different_a cause_n have_v i_o be_v able_a to_o have_v make_v some_o other_o observation_n which_o i_o design_v if_o i_o have_v have_v the_o opportunity_n of_o see_v it_o some_o of_o the_o succeed_a night_n i_o shall_v have_v hope_v to_o have_v explain_v several_a other_o difficulty_n concern_v the_o nature_n of_o the_o body_n and_o blaze_n of_o comet_n but_o be_v therein_o prevent_v i_o must_v leave_v they_o till_o i_o can_v make_v some_o further_a observation_n on_o some_o comet_n that_o may_v hereafter_o appear_v in_o the_o mean_a time_n that_o what_o i_o have_v discourse_v concern_v the_o light_n of_o comet_n may_v not_o seem_v so_o altogether_o paradoxical_a and_o unintelligible_a as_o some_o may_v imagine_v i_o have_v here_o add_v a_o account_n of_o some_o trial_n and_o observation_n make_v on_o shine_a substance_n of_o nature_n exceed_o differ_v from_o those_o that_o be_v common_o to_o be_v meet_v withal_o and_o this_o i_o the_o rather_o do_v not_o only_o because_o it_o afford_v a_o instance_n of_o shine_v where_o there_o be_v no_o air_n but_o that_o hereby_o i_o may_v enlarge_v the_o limit_n of_o their_o imagination_n who_o shall_v consider_v of_o this_o subject_n for_o nothing_o be_v more_o apt_a to_o misguide_v our_o reason_n than_o a_o narrow_a and_o limit_a knowledge_n of_o cause_n we_o be_v not_o to_o conclude_v the_o body_n of_o a_o comet_n a_o sulphureous_a vapour_n exhale_v from_o the_o earth_n and_o kindle_v above_o because_o here_o be_v such_o vapour_n observe_v and_o such_o effect_n produce_v nor_o a_o collection_n of_o sun_n beam_n make_v by_o a_o lentiformed_a vapour_n after_o the_o manner_n of_o a_o burning-glass_n as_o some_o eminent_a writer_n have_v late_o do_v because_o some_o such_o appearance_n may_v be_v artificial_o produce_v in_o a_o smoky_a or_o thicken_a air_n since_o if_o we_o diligent_o inquire_v we_o may_v find_v that_o light_n which_o be_v the_o most_o sensible_a quality_n of_o comet_n that_o affect_v our_o sense_n may_v be_v and_o real_o be_v produce_v by_o very_a many_o and_o those_o very_a differ_a way_n in_o nitre_n and_o sulphur_n kindle_v each_o other_o by_o heat_n we_o have_v one_o way_n in_o a_o body_n burn_v in_o the_o air_n a_o second_o in_o a_o heat_a iron_n or_o glass_n a_o three_o in_o a_o piece_n of_o iron_n hammer_v till_o red_a hot_a a_o four_o in_o rot_a wood_n and_o decay_a fish_n a_o five_o in_o glow-worm_n scolopondras_n and_o other_o live_a worm_n and_o in_o the_o sweat_n and_o excrement_n of_o other_o live_a creature_n a_o six_o in_o a_o diamond_n rub_v a_o seven_o in_o dew_n ignes_fw-la fatui_fw-la etc._n etc._n a_o eight_o in_o sea-water_n a_o nine_o in_o the_o bononian_n stone_n and_o in_o the_o phosphorus_n baldwini_n which_o i_o take_v to_o be_v much_o of_o the_o same_o nature_n a_o ten_o in_o the_o phosphorus_n of_o mr._n kraft_n a_o eleven_o and_o possible_o whole_o differ_v from_o all_o these_o may_v be_v the_o light_n of_o the_o sun_n a_o twelve_o and_o that_o of_o the_o star_n may_v differ_v from_o that_o of_o sun_n and_o the_o comet_n may_v be_v differ_v from_o all_o the_o rest_n whether_o they_o be_v so_o or_o not_o the_o be_v acquaint_v with_o the_o several_a propriety_n of_o they_o will_v the_o better_o enable_v one_o to_o judge_n of_o what_o be_v pertinent_a to_o be_v observe_v in_o comet_n in_o order_n to_o find_v out_o which_o be_v concern_v the_o phaenomena_n of_o most_o of_o these_o shine_a body_n be_v very_o common_a and_o obvious_a and_o therefore_o needless_a to_o be_v add_v but_o that_o of_o the_o bononian_n stone_n prepare_v and_o that_o of_o the_o phosphorus_n baldwini_n late_o discover_v by_o mr._n baldwine_n be_v rare_a and_o hard_a to_o be_v get_v and_o the_o effect_n of_o they_o be_v whole_o differ_v from_o all_o the_o way_n i_o have_v yet_o meet_v with_o and_o will_v therefore_o prove_v experimenta_fw-la crucis_fw-la high_o instructive_a in_o the_o theory_n of_o light_n of_o which_o more_o hereafter_o as_o for_o the_o phosphoros_n fulgurans_fw-la of_o mr._n kraft_n more_o scarce_o and_o rare_a than_o the_o other_o it_o be_v whole_o differ_v from_o any_o of_o the_o rest_n and_o very_o strange_a and_o surprise_a at_o least_o it_o appear_v so_o to_o i_o who_o have_v the_o good_a fortune_n to_o be_v present_a at_o a_o good_a part_n of_o
the_o centre_n of_o the_o shine_a body_n next_o that_o a_o firmament_n which_o divide_v between_o the_o water_n or_o the_o fluid_n of_o the_o one_o and_o the_o fluid_n of_o another_o part_n of_o the_o world_n and_o in_o the_o three_o place_n the_o collection_n of_o particular_a fluid_n to_o one_o centre_n as_o the_o centre_n of_o the_o earth_n and_o last_o out_o of_o that_o collection_n of_o fluid_n appear_v the_o dry_a and_o solid_a land_n so_o i_o conceive_v the_o most_o proper_a way_n of_o speculate_v on_o these_o great_a production_n of_o the_o omnipotent_a creator_n may_v be_v to_o begin_v with_o the_o consideration_n of_o light_n or_o the_o motion_n of_o recess_n from_o the_o centre_n of_o a_o body_n next_o with_o the_o consideration_n of_o the_o cause_n of_o the_o separate_n of_o fluid_a from_o fluid_fw-la as_o aether_n from_o aether_n as_o i_o may_v so_o call_v differ_v aether_n because_o we_o have_v not_o yet_o distinct_a name_n in_o use_n and_o the_o reason_n of_o their_o 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about_o the_o sun_n as_o tycho_n have_v do_v we_o find_v from_o his_o calculation_n of_o it_o he_o be_v fain_o to_o allow_v it_o a_o quick_a and_o slow_a motion_n in_o its_o orbit_n to_o solve_v the_o phaenomena_n which_o seem_v to_o i_o but_o a_o shift_n that_o will_v serve_v to_o help_v out_o any_o lame_a hypothesis_n whatsoever_o and_o that_o grant_v and_o the_o parallax_n of_o the_o comet_n unknown_a i_o will_v undertake_v very_o easy_o to_o make_v out_o almost_o any_o hypothesis_n which_o be_v the_o fault_n also_o of_o mr._n horox_n his_o hypothesis_n wherein_o he_o suppose_v the_o earth_n to_o be_v move_v about_o the_o sun_n and_o the_o comet_n like_o a_o rocket_n to_o be_v shoot_v out_o of_o the_o sun_n and_o by_o degree_n to_o return_v to_o it_o again_o in_o which_o hypothesis_n indeed_o there_o seem_v to_o be_v much_o more_o reason_n for_o a_o inequality_n of_o motion_n though_o not_o in_o the_o manner_n as_o he_o have_v place_v it_o it_o be_v very_o rational_a that_o the_o 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opposite_a side_n to_o a_o equal_a height_n with_o that_o it_o descend_v from_o on_o that_o side_n towards_o which_o it_o be_v throw_v but_o beside_o in_o his_o hypothesis_n he_o seem_v to_o take_v no_o notice_n at_o all_o of_o the_o latitude_n of_o the_o comet_n which_o seem_v to_o carry_v it_o much_o far_o off_o from_o the_o sun_n when_o he_o suppose_v it_o to_o be_v return_v near_o and_o indeed_o upon_o the_o whole_a his_o hypothesis_n seem_v rather_o a_o product_n of_o chance_n than_o of_o any_o contrivance_n for_o he_o in_o endeavour_v to_o set_v off_o the_o longitude_n of_o the_o comet_n according_a to_o tycho_n table_n and_o to_o trace_v its_o way_n by_o suppose_v the_o earth_n annual_a motion_n make_v use_n always_o of_o the_o same_o radius_fw-la to_o set_v off_o the_o aspect_n or_o apparent_a angle_n of_o it_o with_o the_o sun_n his_o line_n of_o chord_n he_o make_v use_v of_o do_v always_o direct_a the_o point_n of_o his_o compass_n to_o the_o place_n where_o he_o situate_v the_o comet_n as_o may_v be_v easy_o find_v by_o examine_v the_o nine_o figure_n where_o you_o may_v find_v that_o he_o place_v the_o comet_n always_o equal_o distant_a from_o the_o earth_n and_o that_o distance_n be_v always_o equal_a to_o the_o distance_n of_o the_o sun_n which_o have_v so_o many_o inconvenience_n and_o improbability_n that_o i_o shall_v not_o insist_v far_o on_o it_o especial_o since_o i_o do_v not_o find_v that_o he_o bestow_v any_o far_a pain_n in_o explicate_v or_o cultivate_v this_o his_o hypothesis_n than_o only_o the_o bare_a delineation_n of_o this_o nine_o figure_n but_o to_o return_v to_o tycho_n hypothesis_n if_o that_o be_v true_a why_o do_v not_o the_o comet_n again_o appear_v after_o a_o certain_a space_n of_o time_n and_o why_o can_v not_o he_o have_v foretell_v when_o it_o shall_v again_o appear_v as_o well_o as_o he_o can_v predict_v the_o appearance_n of_o venus_n about_o who_o orb_n he_o suppose_v it_o to_o circulate_v i_o shall_v pass_v by_o 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increase_n of_o tangent_n but_o upon_o supposition_n that_o it_o move_v equal_a space_n in_o equal_a time_n for_o i_o can_v imagine_v what_o reason_n he_o have_v to_o suppose_v its_o motion_n to_o be_v accelerate_a and_o much_o less_o why_o he_o shall_v assert_v it_o to_o be_v according_a to_o the_o proportion_n of_o tangent_n which_o in_o a_o little_a time_n must_v necessary_o come_v to_o move_v infinite_o swift_a than_o which_o nothing_o be_v more_o hard_a to_o be_v grant_v and_o i_o find_v it_o after_o many_o trial_n and_o essay_n to_o fall_v in_o a_o straight_a line_n incline_v to_o the_o plain_a of_o the_o ecliptic_a by_o anangle_n of_o 47._o 40._o and_o cut_v it_o in_o 9_o degree_n of_o scorpio_n if_o compute_v out_o of_o the_o sun_n and_o move_v fast_o by_o half_a than_o the_o earth_n in_o its_o orb_n and_o this_o to_o so_o great_a a_o exactness_n to_o answer_v all_o the_o observation_n of_o tycho_n that_o from_o a_o very_a large_a scheme_n which_o i_o draw_v of_o it_o on_o a_o plain_a i_o can_v never_o find_v many_o minute_n difference_n so_o that_o i_o conclude_v that_o to_o be_v the_o most_o likely_a hypothesis_n for_o that_o comet_n it_o seem_v to_o solve_v all_o the_o several_a phaenomena_n of_o the_o motion_n and_o magnitude_n of_o the_o comet_n with_o the_o least_o imaginable_a difficulty_n and_o to_o be_v most_o agreeable_a with_o my_o physical_a notion_n of_o comet_n for_o first_o it_o only_o suppose_v a_o solid_a body_n move_v in_o a_o fluid_fw-la with_o a_o almost_o direct_a motion_n i_o say_v almost_o direct_a because_o for_o some_o physical_a reason_n as_o i_o have_v say_v before_o i_o imagine_v it_o not_o exact_o straight_o but_o inflect_v a_o little_a towards_o the_o curvity_n of_o a_o circle_n which_o i_o shall_v present_o endeavour_v to_o explain_v far_o in_o this_o comet_n next_o it_o suppose_v that_o body_n to_o move_v in_o that_o line_n almost_o equal_a space_n in_o equal_a time_n i_o say_v almost_o equal_a because_o some_o of_o those_o equal_a space_n may_v be_v increase_v by_o a_o accelerate_a cause_n or_o principle_n such_o as_o that_o of_o a_o gravitation_n towards_o the_o body_n of_o the_o sun_n place_v in_o the_o centre_n of_o its_o vortice_fw-la or_o system_fw-la when_o the_o motion_n of_o the_o comet_n carry_v it_o towards_o the_o sun_n and_o may_v be_v diminish_v from_o other_o impede_a cause_n such_o as_o the_o impediment_n of_o the_o fluid_a medium_n through_o which_o it_o pass_v and_o the_o attraction_n of_o the_o sun_n operate_a on_o it_o when_o its_o motion_n carry_v it_o far_o and_o far_o off_o from_o it_o beside_o it_o be_v not_o unlikely_a but_o that_o the_o attraction_n of_o the_o earth_n or_o some_o of_o the_o other_o planet_n may_v have_v some_o kind_n of_o influence_n on_o it_o especial_o when_o its_o line_n of_o direction_n do_v somewhat_o near_o approach_v those_o attractive_a point_n but_o the_o deflection_n from_o a_o straight_a line_n be_v always_o so_o much_o the_o less_o by_o how_o much_o the_o swift_a the_o body_n be_v move_v and_o by_o how_o much_o the_o far_o off_o its_o line_n of_o trajection_n be_v perpendicular_o distant_a from_o those_o attract_v body_n according_a to_o this_o supposition_n of_o i_o i_o have_v endeavour_v to_o make_v out_o all_o the_o appearance_n of_o this_o last_o comet_n take_v notice_n of_o in_o the_o best_a observation_n i_o have_v yet_o meet_v with_o among_o which_o i_o find_v no_o one_o of_o the_o parallax_n satisfactory_a as_o in_o the_o ten_o figure_n let_v saint_n represent_v the_o sun_n orb_n the_o orb_n of_o the_o earth_n acdef_n a_o bend_a or_o curve_v line_n in_o which_o the_o comet_n be_v suppose_v to_o move_v the_o comet_n then_o come_v into_o the_o sphere_n of_o the_o attractive_a power_n of_o the_o sun_n by_o the_o straight_a
of_o this_o nature_n will_v be_v acceptable_a to_o the_o renown_a society_n i_o have_v adventure_v again_o to_o send_v you_o some_o of_o my_o far_a inquiry_n to_o be_v communicate_v to_o that_o learned_a philosophical_a company_n since_o i_o write_v of_o the_o blood_n of_o eel_n and_o of_o young_a eel_n i_o have_v not_o be_v idle_a to_o view_v blood_n but_o especial_o my_o own_o which_o for_o some_o time_n i_o have_v indefatigable_o examine_v after_o that_o i_o have_v put_v it_o into_o all_o conceivable_a motion_n among_o which_o observation_n i_o well_o see_v that_o the_o globuli_fw-la of_o my_o own_o blood_n take_v the_o same_o figure_n which_o i_o former_o mention_v that_o the_o globule_n of_o the_o blood_n of_o eel_n appear_v of_o to_o the_o eye_n upon_o see_v which_o i_o doubt_v again_o at_o the_o cause_n of_o the_o smart_n which_o the_o blood_n of_o the_o eel_n cause_n in_o the_o eye_n these_o my_o many_o time_n repeat_v observation_n of_o my_o own_o blood_n i_o make_v to_o no_o 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more_o part_n distinct_a to_o be_v take_v notice_n of_o much_o after_o the_o same_o manner_n as_o if_o we_o suppose_v a_o dish_n fill_v with_o ball_n of_o wax_n set_v over_o a_o fire_n by_o which_o they_o will_v quick_o be_v melt_v together_o and_o unite_v into_o one_o mass_n by_o which_o unite_n of_o the_o globule_n i_o conclude_v this_o to_o be_v the_o reason_n of_o the_o accident_n which_o be_v call_v the_o cold_a fire_n and_o of_o that_o also_o which_o cause_v the_o hand_n or_o finger_n to_o be_v lose_v by_o cold_a but_o i_o leave_v this_o to_o other_o and_o i_o do_v very_o clear_o also_o discover_v that_o there_o be_v six_o other_o small_a globule_n of_o blood_n contain_v within_o each_o of_o the_o former_a and_o large_a globulous_a vesicles_n and_o withal_o i_o take_v much_o pain_n to_o observe_v the_o number_n of_o the_o same_o very_a small_a globule_n out_o of_o which_o the_o great_a globule_n do_v consist_v that_o at_o last_o i_o strong_o imagine_v that_o every_o of_o the_o 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graff_n open_v in_o my_o presence_n the_o vein_n of_o a_o dog_n and_o let_v out_o so_o much_o blood_n that_o the_o dog_n grow_v faint_a then_o he_o open_v the_o artery_n of_o another_o dog_n and_o by_o a_o pipe_n transfuse_v the_o blood_n of_o this_o second_o into_o the_o first_o whereby_o the_o first_o be_v recover_v the_o second_o be_v faint_a then_o the_o say_a doctor_n injected_a back_n into_o the_o artery_n of_o the_o second_o a_o quantity_n of_o cow_n milk_n suppose_v thereby_o to_o preserve_v the_o second_o dog_n alive_a say_v milk_n be_v blood_n but_o no_o soon_o be_v the_o milk_n put_v into_o the_o artery_n but_o the_o dog_n die_v and_o whereas_o it_o be_v common_o say_v that_o milk_n be_v blood_n therefore_o i_o shall_v relate_v of_o what_o part_v the_o milk_n consist_v so_o far_o as_o i_o have_v hitherto_o discover_v i_o have_v say_v heretofore_o that_o the_o milk_n do_v consist_v of_o globules_n swim_v in_o a_o thin_a clear_a watery_a matter_n which_o we_o call_v whey_n but_o as_o the_o great_a globuli_fw-la of_o blood_n be_v all_o of_o the_o same_o bigness_n so_o in_o the_o milk_n they_o be_v quite_o differ_v be_v of_o as_o many_o size_n and_o magnitude_n as_o we_o can_v imagine_v between_o the_o small_a sand_n and_o a_o bare_o corn_n all_o of_o they_o be_v as_o clear_a as_o crystal_n save_v only_o that_o through_o and_o between_o the_o same_o drive_v some_o irregular_a particle_n for_o the_o most_o part_n round_v these_o have_v a_o fatty_a substance_n which_o i_o imagine_v to_o be_v the_o latter_a their_o irregularity_n i_o imagine_v come_v from_o the_o impression_n of_o the_o encompass_v globule_v make_v on_o they_o in_o which_o posture_n they_o grow_v cold_a view_v the_o aforesaid_a difference_n of_o the_o milk_n globules_n i_o suppose_v that_o the_o milk_n vessel_n have_v no_o other_o part_n include_v but_o the_o matter_n out_o of_o which_o they_o be_v all_o make_v and_o that_o the_o same_o matter_n so_o long_o as_o include_v in_o the_o vessel_n 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serum_n in_o the_o pericardium_n be_v almost_o all_o absume_v the_o heart_n strange_o shrivel_v and_o very_o small_a under_o the_o pericardium_n the_o body_n be_v supine_n we_o find_v a_o lump_n of_o coagulate_v blood_n as_o big_a as_o a_o pigeon_n egg_n near_o which_o lie_v also_o a_o substance_n shape_v like_o a_o obtuse_a head_a muscle_n have_v a_o tendon-like_a tail_n which_o insinuate_v to_o the_o pendant_fw-fr lobe_n its_o body_n be_v above_o a_o half_a inch_n thick_a it_o be_v other_o dimension_n and_o shape_n exact_o like_o that_o of_o the_o figure_n x_o of_o which_o a_o show_v the_o head_n or_o upper_a end_n b_o the_o tail_n which_o in_o draw_v out_o of_o the_o rot_a lung_n be_v also_o corrupt_v break_v asunder_o it_o be_v texture_n seem_v fibrous_a like_o that_o of_o the_o kidney_n be_v white_a one_o half_a way_n through_o the_o rest_n of_o a_o dark_a red_a it_o be_v very_o soft_a and_o plum_n have_v a_o firm_a smooth_a tegument_n and_o feel_v very_o much_o like_o a_o sheep_n kidney_n the_o left_a lobe_n of_o the_o lung_n be_v cadaverous_a and_o hollow_a by_o a_o abscess_n which_o have_v discharge_v near_o a_o pint_n of_o very_o foetid_v and_o purulent_a matter_n into_o that_o side_n of_o the_o trunk_n where_o it_o lay_v immure_v up_o by_o the_o adhesion_n of_o the_o lung_n on_o that_o side_n to_o the_o pleura_fw-la which_o with_o the_o diaphragima_fw-la as_o far_o as_o the_o matter_n extend_v be_v livid_v and_o erode_v we_o examine_v this_o rot_a part_n of_o the_o lung_n with_o what_o exactness_n and_o curiosity_n we_o be_v capable_a of_o amid_o such_o a_o crowd_n as_o be_v present_a and_o the_o more_o troublesome_a stench_n of_o the_o cadaver_n and_o find_v though_o the_o whole_a parenchyma_n be_v rot_v and_o no_o firm_a than_o coagulate_v blood_n with_o which_o it_o have_v very_o near_a resemblance_n yet_o the_o branch_n of_o the_o trachea_n continue_v