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guess_v further_o than_o he_o have_v knowledge_n of_o the_o variety_n of_o motion_n i_o be_o therefore_o of_o opinion_n that_o whatsoever_o perfect_o homogeneous_a be_v hard_a consist_v of_o the_o small_a part_n or_o as_o some_o call_v they_o atom_n that_o be_v make_v hard_o in_o the_o beginning_n and_o consequent_o by_o a_o eternal_a cause_n and_o that_o the_o hardness_n of_o the_o whole_a body_n be_v cause_v only_o by_o the_o contact_n of_o the_o part_n by_o pressure_n a._n what_o motion_n be_v it_o that_o make_v a_o hard_a body_n to_o melt_v b._n the_o same_o compound_a motion_n that_o heat_n namely_o that_o of_o fire_n if_o it_o be_v strong_a enough_o for_o all_o motion_n compound_v be_v a_o endeavour_n to_o dissipate_v as_o i_o have_v say_v before_o the_o part_n of_o the_o body_n to_o be_v move_v by_o it_o if_o therefore_o hardness_n consist_v only_o in_o the_o press_a contact_n of_o the_o least_o part_n this_o motion_n will_v make_v the_o same_o part_n slide_v off_o from_o one_o another_o and_o the_o whole_a to_o take_v such_o a_o figure_n as_o the_o weight_n of_o the_o part_n shall_v dispose_v they_o to_o as_o in_o lead_n iron_n gold_n and_o other_o thing_n melt_v with_o heat_n but_o if_o the_o small_a part_n have_v such_o figure_n as_o they_o can_v exact_o touch_v but_o must_v leave_v space_n between_o they_o fill_v with_o air_n or_o other_o fluid_n than_o this_o motion_n of_o the_o fire_n will_v dissipate_v those_o part_n some_o one_o way_n some_o another_o the_o hard_a part_n still_o hard_o as_o in_o the_o burn_a of_o wood_n or_o stone_n into_o ash_n or_o lime_n for_o this_o motion_n
straight_a line_n from_o my_o eye_n to_o the_o sun_n terminate_v in_o the_o east_n b._n it_o be_v not_o due_a east_n but_o partly_o east_n partly_o south_n for_o the_o earth_n be_v but_o a_o point_n compare_v to_o the_o sun_n all_o the_o parallel_n to_o d_o e_z the_o aequator_fw-la such_o as_o be_v e_o a_o f_o b_o e_o g_o if_o they_o be_v produce_v will_v fall_v upon_o the_o body_n of_o the_o sun_n and_o therefore_o a_o b_o be_v north-east_n a_o a_o east_n north-east_n and_o a_o c_o north_n north-east_n a._n proceed_v now_o to_o the_o cause_n of_o attraction_n b._n suppose_v now_o that_o the_o internal_a part_n of_o the_o loadstone_n have_v the_o same_o motion_n with_o that_o of_o the_o internal_a part_n of_o the_o sun_n which_o make_v the_o annual_a motion_n of_o the_o earth_n from_o west_n to_o east_n but_o in_o a_o contrary_a way_n for_o otherwise_o the_o loadstone_n and_o the_o iron_n can_v never_o be_v make_v to_o meet_v then_o set_v the_o loadstone_n at_o a_o little_a distance_n from_o the_o earth_n mark_v with_o z_o and_o the_o iron_n mark_v with_o x_o upon_o the_o superficies_n of_o the_o earth_n now_o that_o which_o make_v x_o rise_v to_o z_o can_v be_v nothing_o else_o but_o air_n for_o nothing_o touch_v it_o but_o air._n and_o that_o which_o make_v the_o air_n to_o rise_v can_v be_v nothing_o but_o those_o small_a circle_n make_v by_o the_o part_n of_o the_o earth_n such_o as_o be_v at_o a_o b_o c_o for_o nothing_o else_o touch_v the_o air._n see_v then_o the_o motion_n of_o each_o point_n of_o the_o loadstone_n be_v from_o east_n to_o west_n in_o circle_n and_o the_o motion_n of_o each_o point_n of_o the_o iron_n from_o west_n to_o east_n it_o follow_v that_o the_o air_n between_o the_o loadstone_n and_o the_o iron_n shall_v be_v cast_v off_o both_o east_n and_o west_n and_o consequent_o the_o place_n leave_v empty_a if_o the_o iron_n do_v not_o rise_v up_o and_o fill_v it_o thus_o you_o see_v the_o cause_n that_o make_v the_o loadstone_n and_o the_o iron_n to_o meet_v a._n hitherto_o i_o assent_v but_o why_o they_o shall_v meet_v when_o some_o heterogeneous_a body_n lie_v in_o the_o air_n between_o they_o i_o can_v imagine_v and_o yet_o i_o have_v see_v a_o knife_n though_o within_o the_o sheath_n attract_v one_o end_n of_o the_o needle_n of_o a_o mariner_n compass_n and_o have_v hear_v it_o will_v do_v the_o same_o though_o a_o stone-wall_n be_v between_o b._n such_o iron_n be_v indeed_o a_o very_a and_o vigorous_a loadstone_n but_o the_o cause_n of_o it_o be_v the_o same_o that_o cause_v fire_n or_o hot_a water_n which_o have_v the_o same_o compound_a motion_n to_o work_v through_o a_o vessel_n of_o brass_n for_o though_o the_o motion_n be_v alter_v by_o restraint_n within_o the_o heterogeneous_a body_n yet_o be_v continue_v quite_o through_o it_o restore_v itself_o a._n what_o be_v the_o cause_n why_o the_o iron_n rub_v over_o by_o a_o loadstone_n will_v receive_v the_o virtue_n which_o the_o loadstone_n have_v of_o draw_v iron_n to_o it_o b._n since_o the_o motion_n that_o bring_v two_o body_n to_o meet_v must_v have_v contrary_a way_n and_o that_o the_o motion_n of_o the_o internal_a part_n of_o the_o magnet_n and_o of_o the_o iron_n be_v contrary_a the_o rub_n of_o they_o together_o do_v not_o give_v the_o iron_n the_o first_o edeavour_n to_o rise_v but_o multiply_v it_o for_o the_o iron_n untouched_a will_v rise_v to_o a_o loadstone_n but_o if_o touch_v it_o become_v a_o loadstone_n to_o other_o iron_n for_o when_o they_o touch_v a_o piece_n of_o iron_n they_o pass_v the_o loadstone_n over_o it_o only_o one_o way_n viz._n from_o pole_n to_o pole_n not_o back_o again_o for_o that_o will_v undo_v what_o before_o have_v be_v do_v also_o they_o press_v it_o in_o pass_v to_o the_o very_a end_n of_o the_o iron_n and_o somewhat_o hard_o so_o that_o by_o this_o press_a motion_n all_o the_o small_a circle_n about_o the_o point_n a_o b_o c_o be_v turn_v the_o contrary_a way_n and_o the_o half_n of_o those_o small_a circle_n make_v on_o the_o arch_n d_o b_o will_n be_v take_v away_o and_o the_o pole_n change_v so_o as_o that_o the_o north-pole_n shall_v point_v south_n and_o the_o south_n poles_n north_n as_o in_o the_o figure_n a._n but_o how_o come_v it_o to_o pass_v that_o when_o a_o loadstone_n have_v draw_v a_o piece_n of_o iron_n you_o may_v add_v to_o it_o another_o as_o if_o they_o beget_v one_o another_o be_v there_o the_o like_a motion_n in_o the_o generation_n of_o animal_n b._n i_o have_v tell_v you_o that_o iron_n of_o itself_o will_v rise_v to_o the_o loadstone_n much_o more_o than_o will_v it_o adhere_v to_o it_o when_o it_o be_v arm_v with_o iron_n and_o both_o it_o and_o the_o iron_n have_v a_o plain_a superficies_n for_o than_o not_o only_o the_o point_n of_o contact_n will_v be_v many_o which_o make_v the_o coherence_n strong_a but_o also_o the_o iron_n wherewith_o it_o be_v arm_v be_v now_o another_o loadstone_n differ_v a_o little_a which_o you_o perhaps_o think_v as_o male_a and_o female_a but_o whether_o this_o compound_a motion_n and_o confrication_n cause_v the_o generation_n of_o animal_n how_o shall_v i_o know_v that_o never_o have_v so_o much_o leisure_n as_o to_o make_v any_o observation_n which_o may_v conduce_v to_o that_o a._n my_o next_o question_n be_v see_v you_o say_v the_o loadstone_n or_o a_o needle_n touch_v with_o it_o natural_o respect_v the_o pole_n of_o the_o earth_n but_o that_o the_o variation_n of_o it_o proceed_v from_o some_o accident_n in_o the_o superficies_n of_o the_o earth_n what_o be_v those_o accident_n b._n suppose_v there_o be_v a_o hill_n upon_o the_o earth_n for_o example_n at_o r_o then_o the_o stream_n of_o the_o air_n which_o be_v between_o z_o and_o obligatory_n westward_n come_v to_o the_o hill_n shall_v go_v up_o the_o hill_n side_n and_o so_o down_o to_o the_o other_o side_n according_a to_o the_o crooked_a line_n which_o i_o have_v mark_v about_o the_o hill_n by_o point_n and_o this_o infallible_o will_v turn_v the_o north-point_n of_o the_o needle_n be_v on_o the_o east_n side_n more_o towards_o the_o east_n and_o that_o on_o the_o other_o side_n more_o towards_o the_o west_n than_o if_o there_o have_v be_v no_o hill_n and_o where_o upon_o the_o earth_n be_v there_o not_o eminency_n and_o depression_n except_o in_o some_o wide_a sea_n and_o a_o great_a way_n from_o land_n a._n but_o if_o that_o be_v true_a the_o variation_n in_o the_o same_o place_n shall_v be_v always_o the_o same_o for_o the_o hill_n be_v not_o remove_v b._n the_o variation_n of_o the_o needle_n at_o the_o same_o place_n be_v still_o the_o same_o but_o the_o variation_n of_o the_o variation_n be_v partly_o from_o the_o motion_n of_o the_o pole_n itself_o which_o by_o the_o astronomer_n be_v call_v motus_fw-la trepidationis_fw-la and_o partly_o from_o that_o that_o the_o variation_n can_v be_v true_o observe_v for_o the_o horizontal_n needle_n and_o the_o inclinatory_a needle_n incline_v alike_o but_o can_v incline_v in_o due_a quantity_n for_o whether_o set_v upon_o a_o pin_n or_o a_o axis_n their_o inclination_n be_v hinder_v in_o the_o horizontal_n needle_n by_o the_o pin_n itself_o if_o upon_o a_o axis_n if_o the_o axis_n be_v just_a it_o can_v move_v if_o slack_a the_o weight_n will_v hinder_v it_o but_o chief_o because_o the_o north_n pole_n of_o the_o earth_n draw_v away_o from_o it_o the_o north_n pole_n of_o the_o needle_n for_o two_o like_a pole_n can_v come_v together_o and_o this_o be_v the_o cause_n why_o the_o variation_n in_o one_o place_n be_v east_n and_o another_o west_n a._n this_o be_v indeed_o the_o most_o probable_a reason_n why_o the_o variation_n vary_v that_o ever_o i_o hear_v give_v and_o i_o shall_v present_o acknowledge_v that_o this_o parallel_a motion_n of_o the_o axis_n of_o the_o earth_n in_o the_o ecliptic_a suppose_v by_o copernicus_n be_v the_o true_a annual_a motion_n of_o the_o earth_n but_o that_o there_o be_v late_o come_v forth_o a_o book_n call_v longitude_n find_v which_o make_v the_o magnetical_a pole_n distant_a from_o the_o pole_n of_o the_o earth_n eight_o degree_n and_o a_o half_a b._n i_o have_v the_o book_n it_o be_v far_o from_o be_v demonstrate_v as_o you_o shall_v find_v if_o you_o have_v the_o patience_n to_o see_v it_o examine_v for_o wheresoever_o his_o demonstration_n be_v true_a the_o conclusion_n if_o right_o infer_v will_v be_v this_o that_o the_o pole_n of_o the_o loadstone_n and_o the_o pole_n of_o the_o earth_n be_v the_o same_o and_o where_o on_o the_o contrary_a his_o demonstration_n be_v fallacy_n it_o be_v because_o sometime_o he_o fanci_v the_o line_n he_o have_v draw_v not_o where_o they_o be_v sometime_o because_o he_o mistake_v