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a_o diurnal_a motion_n of_o the_o earth_n about_o its_o own_o centre_n according_a to_o the_o aequator_fw-la and_o a_o annual_a motion_n progressive_o in_o the_o zodiac_n or_o circle_n that_o it_o describe_v yet_o there_o can_v also_o be_v a_o three_o inclinatory_n motion_n about_o the_o centre_n according_a to_o the_o meridian_n because_o there_o can_v be_v two_o motion_n about_o several_a axe_n thereof_o according_a to_o the_o meridian_n and_o aequator_fw-la or_o about_o the_o centre_n of_o itself_o as_o i_o say_v especial_o since_o the_o diurnal_a motion_n of_o the_o earth_n must_v be_v about_o the_o axis_n according_a to_o the_o aequator_fw-la and_o the_o inclinatory_n about_o the_o centre_n according_a to_o the_o meridian_n not_o only_o thus_o several_o but_o one_o diurnaly_n and_o
fly_v or_o swim_v and_o while_o it_o do_v totaly_n prevail_v against_o the_o motion_n of_o descent_n carry_v the_o body_n in_o a_o direct_a line_n and_o level_n any_o other_o way_n though_o with_o some_o decrement_n of_o the_o force_n so_o that_o a_o bullet_n shoot_v out_o of_o a_o gun_n do_v not_o move_v with_o a_o equal_a force_n so_o long_o as_o it_o fly_v level_n as_o may_v appear_v by_o the_o unequal_a execution_n that_o it_o do_v at_o a_o near_o or_o far_a distance_n within_o that_o level_n and_o so_o do_v decreas_n by_o proportionable_a degree_n or_o if_o it_o be_v short_a perpendicular_o upward_o it_o will_v decreas_n in_o swiftness_n and_o strength_n till_o it_o return_v again_o downward_o which_o be_v the_o very_a difference_n between_o such_o violent_a and_o natural_a motion_n herein_o and_o as_o rest_v and_o motion_n be_v seem_o contrary_a and_o yet_o motion_n be_v indeed_o subordinate_a and_o subservient_fw-fr to_o rest_n so_o be_v the_o natural_a motion_n to_o this_o violent_a diversion_n so_o long_o as_o it_o be_v predominant_a over_o it_o all_o which_o i_o shall_v manifest_o approve_v by_o the_o common_a experiment_n of_o a_o ball_n rebound_v from_o a_o paviment_n of_o stone_n certain_o the_o ball_n first_o fall_v perpendicular_o upon_o the_o paviment_n by_o its_o own_o natural_a motion_n of_o descent_n which_o be_v great_a than_o be_v sufficient_a to_o carry_v it_o to_o its_o next_o place_n of_o rest_n and_o be_v stop_v by_o the_o stone_n be_v reflect_v upward_o and_o that_o be_v a_o motion_n diametrica_o opposite_a to_o the_o former_a and_o be_v by_o reason_n of_o that_o diversion_n and_o direction_n which_o it_o receive_v from_o the_o paviment_n externaly_n and_o yet_o not_o by_o any_o continue_a impression_n thereof_o but_o only_o from_o its_o own_o natural_a motion_n actuate_v in_o itself_o and_o so_o divert_v and_o direct_v thereby_o for_o the_o paviment_n of_o stone_n be_v consistent_a and_o quiescent_a can_v add_v nothing_o to_o it_o nor_o make_v any_o such_o impression_n upon_o the_o ball_n as_o a_o hand_n may_v by_o throw_v or_o beat_v it_o back_o or_o a_o racket_n by_o the_o springine_n of_o the_o string_n first_o yield_v and_o then_o repercuss_v it_o nor_o be_v there_o any_o such_o springine_n in_o the_o ball_n which_o fall_v upon_o the_o paviment_n and_o there_o be_v the_o same_o motion_n of_o a_o marble_n or_o the_o like_o most_o consistent_a and_o not_o springy_a or_o yield_a globule_n but_o both_o the_o direct_a and_o reflex_n motion_n be_v from_o the_o ball_n or_o marble_n themselves_o and_o the_o motion_n thereof_o as_o the_o emanation_n of_o ray_n which_o be_v naturaly_n reflexive_a aswell_o as_o emanant_fw-la and_o as_o the_o bullet_n â—o_o also_o the_o ball_n or_o marble_n by_o their_o own_o natural_a motion_n so_o divert_v do_v by_o degree_n prevail_v against_o that_o violent_a diversion_n and_o at_o last_o attein_v their_o natural_a rest._n and_o i_o suppose_v that_o if_o a_o hole_n be_v make_v through_o the_o body_n and_o centre_n of_o the_o earth_n and_o a_o bullet_n drop_v in_o it_o the_o bullet_n will_v pass_v beyond_o the_o centre_n forward_o and_o backward_o like_o a_o pendulum_n or_o needle_n by_o its_o own_o motion_n actuate_v in_o itself_o and_o so_o by_o degree_n return_v to_o it_o now_o if_o the_o ball_n or_o marble_n fall_v by_o a_o diagonial_a declivity_n as_o from_o a_o penthous_n roof_n or_o hill_n or_o the_o like_a then_o because_o it_o half_o rest_v and_o half_o move_v that_o motion_n acquire_v only_o half_a the_o increment_n or_o degree_n of_o velocity_n and_o may_v describe_v a_o quadrant_n of_o a_o proportionable_a cycloid_v in_o the_o descent_n afterward_o upon_o the_o paviment_n and_o as_o i_o suppose_v a_o granado_n shoot_v from_o a_o mortarpiece_n diagonia_o do_v from_o the_o angle_n of_o inclination_n or_o zenith_n describe_v such_o a_o quadrant_n between_o the_o perpendicular_a and_o arch_a of_o the_o circle_n which_o i_o leave_v to_o the_o curious_a more_o exact_o to_o determine_v and_o there_o be_v the_o like_a reason_n of_o the_o semicircular_a vibration_n of_o the_o pendulum_n whereof_o the_o centre_n of_o extension_n be_v the_o point_n where_o the_o line_n hang_v and_o whereby_o the_o pendulum_n be_v produce_v to_o the_o extremity_n of_o the_o semidiametrical_a plane_n where_o the_o arch_n thereof_o begin_v downward_o and_o then_o be_v let_v go_v but_o can_v descend_v perpendicular_o downward_o because_o the_o line_n which_o be_v suspend_v at_o the_o centre_n do_v stop_v it_o and_o so_o divert_v and_o direct_v its_o own_o motion_n of_o descent_n according_o to_o describe_v almost_o a_o semicircle_n half_a about_o that_o centre_n which_o it_o plain_o do_v without_o any_o external_n impression_n or_o reflection_n from_o any_o other_o body_n but_o only_o by_o its_o own_o natural_a motion_n so_o divert_v and_o direct_v and_o by_o proportionable_a decrement_n as_o be_v aforesaid_a as_o the_o needle_n of_o the_o compass_n do_v also_o so_o move_v horizontaly_n by_o a_o great_a motion_n of_o verticity_n than_o be_v sufficient_a to_o reduce_v it_o to_o the_o pole_n and_o so_o at_o last_o the_o natural_a motion_n prevail_v against_o the_o violent_a diversion_n it_o rest_v perpendicular_o upon_o the_o nadir_n of_o the_o arch_n which_o it_o describe_v and_o be_v correspondent_a to_o the_o centre_n of_o the_o perpendicular_a line_n and_o probable_o such_o decrement_n of_o violent_o divert_v motion_n be_v proportionable_a to_o the_o increment_n of_o natural_a motion_n and_o perhaps_o motion_n of_o restitution_n which_o be_v spiritual_a and_o from_o the_o potentia_fw-la of_o spirit_n be_v herein_o analogous_a to_o the_o natural_a motion_n of_o matter_n and_o so_o a_o spring_n of_o steel_n beat_v one_o way_n seem_v to_o make_v one_o vibration_n almost_o as_o much_o the_o other_o way_n and_o the_o many_o vâ—brations_n in_o the_o torricellian_a experiment_n be_v from_o such_o cause_n it_o may_v be_v also_o inquire_v whether_o there_o be_v such_o increment_n of_o the_o natural_a motion_n to_o union_n upward_o aswell_o as_o to_o station_n downward_o as_o whether_o a_o bullet_n which_o be_v suck_v up_o by_o a_o man_n breath_n through_o a_o long_a musket_n barrel_n do_v ascend_v more_o swift_o and_o more_o strong_o then_o if_o it_o be_v short_a or_o per_fw-la saltum_fw-la like_o the_o motion_n of_o magnet_n for_o it_o be_v by_o the_o suck_v and_o expand_v of_o the_o include_v air_n thereby_o which_o when_o it_o be_v so_o far_o expand_v that_o the_o retractive_a potentia_n thereof_o be_v more_o praepotent_a than_o the_o pondus_fw-la of_o the_o bullet_n and_o the_o air_n be_v still_o suck_v the_o bullet_n do_v by_o the_o other_o motion_n of_o matter_n to_o union_n as_o naturaly_n follow_v it_o to_o prevent_v vacuity_n which_o i_o shall_v show_v hereafter_o as_o if_o it_o do_v descend_v by_o the_o motion_n to_o station_n or_o at_o least_o equaly_a as_o swift_o at_o last_o as_o at_o first_o like_o aether_n and_o i_o shall_v now_o observe_v one_o thing_n more_o in_o such_o divert_v motion_n which_o i_o have_v before_o intimate_v that_o if_o the_o impetus_fw-la or_o force_v thereof_o which_o be_v so_o actuate_v be_v great_a than_o can_v be_v spend_v in_o carry_v the_o body_n move_v forward_o by_o reason_n of_o the_o resistance_n of_o the_o medium_fw-la or_o otherwise_o than_o it_o not_o only_o so_o carry_v it_o direct_o but_o the_o excess_n thereof_o do_v also_o move_v the_o body_n circular_o thus_o a_o bullet_n or_o arrow_n discharge_v violent_o from_o a_o gun_n or_o bow_n beside_o the_o direct_a motion_n thereof_o move_v also_o circular_o and_o so_o in_o a_o whirlpitt_n which_o have_v a_o vent_n at_o the_o bottom_n whereby_o all_o the_o part_n of_o the_o water_n above_o it_o be_v put_v in_o motion_n as_o i_o have_v show_v and_o yet_o can_v not_o all_o descend_v and_o issue_v out_o together_o therefore_o they_o move_v round_o as_o also_o water_n in_o a_o boil_a pot_n and_o so_o in_o the_o common_a experiment_n of_o water_n ascend_v from_o a_o basin_n wherein_o a_o flame_v candle_n or_o charcoal_n kindle_v at_o one_o end_n be_v perpendicular_o fix_v above_o the_o water_n and_o then_o a_o urinal_n or_o the_o like_a vessel_n invert_v over_o it_o into_o the_o water_n in_o the_o basin_n the_o water_n will_v move_v round_o in_o the_o basin_n when_o it_o begin_v to_o ascend_v into_o the_o urinal_n as_o may_v appear_v by_o any_o mote_n swim_v in_o the_o superficies_n of_o the_o water_n and_o so_o i_o conceiv_v it_o to_o be_v a_o general_a rule_n that_o if_o a_o body_n in_o actual_a motion_n so_o far_o as_o it_o can_v not_o according_a to_o the_o actual_a motion_n thereof_o move_v direct_o the_o part_n thereof_o will_v move_v circular_o now_o because_o all_o circular_a motion_n of_o the_o same_o body_n and_o in_o the_o same_o place_n have_v to_o some_o seem_v so_o very_o wonderful_a and_o