8._o the_o four_o angle_n tab._n i._o fig._n 10._o and_o of_o many_o other_o fashion_n as_o tab._n i._n fig._n 9_o 11._o 12._o which_o may_v be_v describe_v all_o which_o be_v flat_v or_o round_v at_o their_o pole_n tab._n i._n a_o b_o have_v their_o cap_n with_o one_o or_o two_o tooth_n will_v take_v up_o by_o they_o both_o or_o several_o and_o be_v good_a to_o touch_v needle_n wire_n knife_n dagger_n and_o such_o like_a long_a form_n to_o give_v they_o virtue_n to_o take_v up_o small_a wire_n sowing-needle_n and_o such_o like_a small_a weight_n or_o to_o give_v the_o virtue_n polar_n you_o may_v cap_v and_o arm_v some_o kind_n of_o form_n of_o magnet_n with_o four_o tooth_n two_o tooth_n from_o the_o side_n flat_v at_o either_o pole_n as_o we_o have_v describe_v tab._n i._o fig._n 7._o which_o have_v four_o square_a iron_n tooth_n like_o a_o four_o footed_a stool_n to_o raise_v up_o weight_n with_o four_o tooth_n together_o if_o you_o have_v a_o magnet_n stone_n of_o a_o flat_a form_n that_o have_v his_o pole_n in_o the_o centre_n of_o the_o stone_n as_o these_o i_o have_v describe_v have_v their_o pole_n in_o the_o end_n than_o you_o may_v place_v one_o side_n with_o his_o pole_n downward_o and_o the_o other_o side_n upward_o and_o provide_v you_o a_o cap_n for_o the_o uppermost_a side_n like_o a_o greek_a 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d and_o a_o cap_n for_o the_o nethermost_a side_n like_o a_o slavonian_a 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d and_o these_o be_v artificial_o and_o discussive_o fasten_v to_o this_o loadstone_n will_v take_v up_o weight_n with_o five_o tooth_n as_o it_o be_v a_o hand_n with_o five_o finger_n i_o have_v draw_v a_o line_n a_o b_o in_o all_o these_o form_n parallel_n to_o the_o axis_fw-la of_o the_o loadstone_n to_o the_o end_n that_o the_o cap_n of_o iron_n cross_v the_o pole_n and_o axis_fw-la a_o b_o at_o right_a angle_n may_v be_v the_o better_o perceive_v nevertheless_o in_o fashion_v of_o some_o loadstone_n the_o axis_fw-la can_v so_o apt_o be_v always_o place_v in_o the_o midst_n of_o the_o end_n of_o the_o loadstone_n be_v flat_v unless_o there_o be_v a_o great_a part_n of_o the_o load_n stone_n take_v away_o &_o the_o bulk_n very_o much_o deminish_v which_o will_v lessen_v much_o the_o strength_n of_o the_o stone_n for_o the_o great_a that_o the_o bulk_n be_v the_o more_o be_v the_o strength_n of_o the_o magnet_n therefore_o i_o have_v set_v down_o a_o type_n in_o the_o last_o place_n tab._n i._o fig._n 12._o where_o the_o diameter_n a_o b_o lieth_z awry_o and_o the_o pole_n be_v situate_v high_a and_o low_a at_o the_o end_n and_o yet_o the_o loadstone_n shall_v take_v up_o as_o much_o in_o weight_n as_o if_o his_o diameter_n lie_v not_o oblique_o the_o hilly_a knob_n and_o angulous_a part_n of_o the_o loadstone_n may_v be_v sawen_v away_o with_o sand_n or_o emerâ—_n without_o any_o hurt_n to_o the_o virtue_n of_o the_o stone_n and_o sometime_o many_o ounce_n may_v be_v cut_v away_o without_o any_o loss_n of_o magnetical_a vigour_n especial_o if_o any_o substance_n of_o other_o nature_n be_v intermingle_v and_o agglutinate_v to_o the_o magnet_n which_o may_v be_v know_v by_o their_o colour_n and_o hardness_n very_o easy_o also_o if_o there_o be_v any_o cavity_n and_o hollow_a place_n or_o break_a part_n of_o the_o loadstone_n that_o do_v diminish_v his_o virtue_n or_o disfigure_v his_o form_n this_o may_v be_v supply_v mend_v and_o fill_v either_o with_o a_o piece_n of_o another_o loadstone_n or_o with_o a_o cement_n of_o the_o powder_n of_o the_o loadstone_n and_o the_o file_n of_o steel_n or_o of_o iron_n bray_v and_o grind_v very_o small_a upon_o a_o painter_n stone_n mix_v with_o resin_n and_o wax_n melt_v and_o colour_v to_o the_o colour_n of_o the_o magnet_n that_o be_v mend_v put_v into_o this_o cement_n more_o or_o less_o of_o the_o file_n according_a to_o the_o strength_n of_o the_o loadstone_n some_o with_o this_o cement_n and_o such_o like_a glutinous_a matter_n make_v diverse_a form_n of_o magnetical_a body_n artificial_a it_o be_v very_o convenient_a for_o maker_n of_o sea-compass_n and_o master_n of_o ship_n to_o have_v a_o magnet_n well_o cap_v that_o take_v up_o at_o one_o end_n half_o a_o pound_n weight_n at_o jest_n for_o it_o be_v not_o whole_o necessary_a that_o the_o same_o shall_v be_v of_o the_o best_a vigour_n and_o strong_a rock_n for_o all_o lodestone_n both_o of_o great_a and_o less_o vigour_n have_v the_o same_o faculty_n magnetical_a to_o all_o intent_n and_o purpose_n the_o great_a stone_n of_o the_o same_o rock_n have_v a_o large_a virtue_n than_o the_o less_o and_o every_o part_n and_o small_a piece_n of_o magnet_n stone_n have_v every_o one_o of_o they_o the_o same_o virtue_n and_o vigour_n magnetical_a the_o great_a one_o have_v save_v that_o they_o be_v more_o weak_a and_o not_o always_o proportionable_a in_o strength_n unto_o they_o chap._n iii_o of_o jron_n iron_n be_v a_o mettle_n decoct_v out_o of_o the_o loadstone_n or_o out_o of_o a_o mine_n of_o that_o kind_n the_o best_a iron-mine_a and_o loadstone_n be_v all_o one_o thing_n and_o body_n magnetical_a for_o it_o be_v place_v artificial_o either_o in_o the_o air_n or_o upon_o the_o water_n move_v north_n and_o south_n attract_v other_o iron_n unto_o it_o and_o perform_v the_o same_o conclusion_n that_o the_o magnet_n stone_n do_v this_o mettle_n be_v heavy_a and_o of_o a_o bluish_a black_a colour_n after_o that_o it_o be_v try_v from_o the_o dross_n and_o be_v make_v of_o certain_a iuce_n and_o vapour_n in_o the_o convenient_a bowel_n of_o the_o earth_n by_o a_o specifical_a virtue_n work_v he_o beside_o the_o my_o this_o mettle_n be_v excoct_v out_o of_o diverse_a stone_n sand_n earth_n and_o caly_n of_o diverse_a colour_n which_o have_v much_o iron_n like_o matter_n in_o they_o if_o some_o clay_n 〈◊〉_d burn_v in_o the_o fire_n be_v of_o a_o long_a form_n cool_a north_n and_o south_n after_o be_v hang_v on_o 〈…〉_o in_o the_o air_n or_o put_v into_o a_o dish_n in_o the_o water_n it_o will_v turn_v and_o move_v itself_o too_o and_o fro_o till_o it_o rest_v north_n and_o south_n and_o some_o clay_n be_v burn_v will_v show_v a_o little_a iron_n upon_o his_o side_n that_o be_v melt_v out_o of_o he_o so_o that_o this_o magnetical_a substance_n of_o iron_n be_v not_o very_o scant_o to_o be_v find_v for_o in_o all_o country_n and_o region_n there_o be_v great_a store_n of_o this_o mettle_n be_v the_o principal_a matter_n of_o the_o external_a bark_n of_o the_o globe_n of_o the_o earth_n steel_n and_o iron_n be_v the_o best_a magnetical_a material_n for_o magnetical_a use_n because_o by_o the_o smith_n skill_n they_o will_v be_v extend_v and_o fashion_v into_o diverse_a form_n fit_a for_o the_o practice_n and_o use_v of_o magnetical_a demonstration_n of_o this_o mettle_n be_v make_v cap_n for_o lodestone_n of_o diverse_a form_n with_o tooth_n to_o take_v hold_n of_o and_o lift_v up_o great_a and_o small_a fashion_n of_o weight_n of_o iron_n and_o diverse_a other_o magnetical_a needle_n and_o form_n tab_n two_o it_o be_v good_a to_o have_v long_a plate_n of_o iron_n reasonable_a thick_a tab._n ii_o fig._n 7._o round_a plate_n of_o iron_n tab._n ii_o fi._n 9_o and_o round_o ring_v of_o iron_n of_o diverse_a weight_n and_o bigness_n figure_n 8._o it_o be_v convenient_a to_o have_v diverse_a directory_n magnetical_a needle_n great_a and_o small_a tab._n ii_o fig._n 10._o 11._o for_o dial_n and_o instrument_n and_o needle_n for_o compass_n tab._n ii_o fig._n 12._o &_o 13._o to_o fasten_v to_o the_o card_n or_o to_o take_v off_o at_o pleasure_n we_o use_v short_a wire_n fasten_v to_o third_o and_o a_o little_a loadstone_n in_o a_o three_o to_o take_v up_o a_o weight_n also_o it_o be_v necessary_a to_o have_v inclinatory-needle_n tab._n ii_o fig._n 16._o to_o put_v into_o his_o ring_n and_o a_o short_a one_o with_o a_o lutestring_n in_o the_o midst_n tab._n ii_o fig._n 17._o or_o else_o put_v in_o a_o frame_n of_o brass_n or_o silver_n as_o tab._n ii_o fig._n 18._o to_o find_v the_o pole_n of_o the_o loadstone_n and_o to_o demonstrate_v his_o oblique_a inclination_n to_o the_o loadstone_n as_o he_o be_v carry_v about_o he_o or_o else_o to_o have_v a_o little_a round_a loadstone_n put_v into_o a_o frame_n with_o a_o axletree_n have_v his_o pole_n mark_v fig._n 19_o which_o apply_v about_o the_o loadstone_n turn_v and_o conucrt_v itself_o diverse_o also_o it_o be_v fit_a to_o have_v a_o short_a and_o thick_a needle_n tab._n ii_o fig._n 20._o into_o the_o end_n of_o it_o there_o be_v to_o be_v put_v a_o wire_n of_o silver_n brass_n or_o of_o a_o piece_n of_o a_o whale-bone_n for_o use_n hereafter_o
in_o chariot-wheel_n for_o circumvolution_n turn_v herself_o daily_o about_o from_o the_o west_n into_o the_o east_n to_o meet_v with_o and_o receive_v the_o pleasant_a beam_n and_o influence_n of_o the_o sun_n star_n and_o planet_n for_o to_o cherish_v comfort_n and_o invigor_n all_o those_o goodly_a creature_n that_o be_v place_v upon_o she_o grow_v out_o of_o she_o or_o be_v breed_v and_o conceive_v in_o she_o as_o also_o for_o the_o continual_a change_n and_o vicissitude_n of_o season_n be_v a_o thing_n more_o natural_a and_o fit_a that_o the_o earth_n shall_v thus_o move_v for_o she_o own_o good_a then_o that_o all_o the_o heaven_n shall_v furious_o move_v to_o serve_v she_o it_o be_v to_o be_v observe_v in_o fashion_v of_o the_o magnet_n stone_n that_o when_o the_o axis_fw-la of_o the_o same_o shall_v be_v cut_v short_a that_o then_o the_o aequator_fw-la remove_v necessary_o to_o the_o midst_n of_o the_o body_n of_o the_o loadstone_n as_o if_o a_o long_a magnet_n shall_v be_v saw_v and_o divide_v into_o two_o piece_n as_o tab_n iii_o fig._n 8._o upon_o or_o parallel_v to_o the_o aequator_fw-la the_o pole_n will_v be_v in_o the_o midst_n of_o the_o stone_n and_o the_o aequator_fw-la will_v also_o be_v in_o the_o midst_n of_o either_o stone_n as_o a_o b_o and_o the_o prick_v line_n be_v for_o every_o piece_n and_o part_n of_o a_o loadstone_n have_v his_o pole_n and_o aequator_fw-la with_o the_o rest_n of_o the_o circle_n as_o well_o and_o as_o natural_o as_o the_o earth_n or_o any_o great_a magnet_n have_v and_o will_v be_v divide_v into_o two_o jurisdiction_n by_o his_o aequator_fw-la tho_o before_o all_o his_o part_n be_v but_o of_o one_o province_n and_o nature_n even_o so_o if_o you_o part_v a_o needle_n or_o long_o wire_n magnetical_o touch_v in_o two_o piece_n the_o part_n will_v have_v their_o several_a pole_n as_o tab._n iii_o fig._n 5._o the_o pole_n a_o b_o be_v in_o either_o part_n of_o the_o wire_n chap._n ix_o of_o the_o meridian_n the_o meridian_n be_n great_a circle_n draw_v by_o the_o aequator_fw-la upon_o the_o loadstone_n or_o as_o may_v be_v observe_v by_o the_o needle_n upon_o the_o face_n of_o the_o earth_n from_o the_o one_o pole_n to_o the_o other_o where_o they_o do_v all_o touch_n as_o in_o the_o centre_n tab._n iii_o fig._n 9_o they_o be_v natural_o in_o every_o loadstone_n and_o in_o the_o earth_n and_o be_v thus_o find_v out_o for_o they_o be_v the_o path_n whereon_o all_o magnetical_a motion_n be_v traverse_a and_o direct_v lay_v a_o wire_n of_o a_o reasonable_a length_n upon_o the_o magnet_n as_o fig._n 9_o a_o b_o and_o it_o will_v turn_v and_o seat_n itself_o upon_o a_o meridian_n and_o point_n to_o the_o pole_n and_o if_o he_o be_v move_v from_o the_o meridian_n by_o any_o force_n he_o will_v soon_o return_v to_o the_o same_o again_o and_o by_o this_o wire_n you_o may_v mark_v out_o a_o meridian_n likewise_o take_v a_o little_a directory-needle_n of_o a_o small_a dial_n and_o set_v it_o upon_o a_o small_a pin_n with_o a_o foot_n set_v they_o upon_o the_o terrella_n semiterrella_n or_o any_o magnet_n tab._n iii_o fig._n 9_o and_o the_o needle_n will_v point_v towards_o the_o pole_n make_v a_o mark_n remove_v the_o needle_n forward_o and_o make_v more_o then_o join_v all_o the_o point_n together_o which_o make_v a_o part_n of_o a_o meridian_n and_o be_v continue_v forward_o run_v to_o the_o pole_n so_o a_o small_a and_o short_a wire_n place_v upon_o the_o magnet_n from_o place_n to_o place_n between_o the_o aequator_fw-la and_o the_o pole_n will_v stick_v fast_o at_o one_o end_n and_o erect_v the_o other_o oblique_o and_o the_o several_a place_n be_v note_v with_o chalk_n or_o emery_n will_v set_v out_o a_o meridian_n to_o the_o pole_n at_o the_o aequator_fw-la be_v no_o long_o than_o a_o barley_n corn_n will_v lie_v flat_a to_o the_o stone_n put_v he_o forward_o towards_o the_o pole_n and_o then_o he_o will_v erect_v himself_o a_o little_a stick_v at_o the_o other_o end_n upon_o your_o terrella_n semiterrella_n or_o magnet_n put_v he_o more_o forward_o and_o he_o will_v be_v erect_v less_o acute_o and_o about_o 34_o degree_n from_o the_o aequator_fw-la he_o will_v make_v a_o right_a angle_n with_o the_o axis_fw-la of_o the_o magnet_n and_o be_v bring_v and_o place_v upon_o the_o pole_n stand_v upright_o in_o one_o continue_a axis_fw-la with_o the_o axis_fw-la of_o the_o loadstone_n tab._n iii_o fig._n 9_o this_o variety_n of_o application_n to_o the_o magnet_n do_v produce_v a_o certain_a kind_n of_o motion_n magnetical_a which_o may_v be_v call_v the_o motion_n of_o inclination_n conversion_n or_o conformity_n of_o one_o magnetical_a body_n unto_o another_o but_o the_o little_a directory-needle_n demonstrate_v this_o motion_n best_o be_v carry_v about_o the_o terrella_n and_o semiterrella_n as_o shall_v be_v demonstrate_v in_o the_o xii_o chapter_n follow_v i_o have_v speak_v before_o somewhat_o as_o concern_v the_o make_v flat_a of_o a_o side_n of_o the_o loadstone_n parallel_n to_o the_o axis_fw-la which_o be_v a_o meridian_n line_n parallel_n thereto_o whereby_o weight_n may_v be_v apprehend_v tab._n iii_o fig._n 4._o therefore_o have_v a_o magnet_n stone_n first_o make_v flat_a at_o the_o end_n where_o the_o pole_n be_v and_o after_o a_o side_n make_v plain_a and_o straight_o parallel_n to_o the_o axis_fw-la for_o a_o meridian_n than_o you_o may_v form_v the_o stone_n into_o what_o fashion_n you_o please_v as_o into_o a_o fouresquare_a into_o a_o figure_n of_o 5_o 6_o or_o 8_o equal_a angle_n or_o side_n or_o into_o unequal_a side_n as_o have_v be_v thew_v in_o the_o first_o table_n in_o many_o type_n cut_a a_o part_n from_o a_o magnet_n stone_n meridional_o and_o that_o end_n which_o be_v place_v south_n when_o it_o be_v whole_a be_v sever_v will_v turn_v north_n though_o natural_o at_o first_o it_o be_v the_o south_n point_n as_o in_o tab._n iii_o fig._n 3._o the_o pole_n a_o b_o in_o the_o little_a piece_n be_v turn_v contrary_a to_o the_o pole_n a_o b_o in_o the_o great_a magnet_n chap._n x._o of_o the_o parallel_n the_o parallel_n be_v circle_n and_o part_n equidistant_a from_o the_o pole_n and_o parallel_v to_o the_o aequator_fw-la and_o do_v possess_v the_o whole_a space_n between_o the_o aequator_fw-la and_o the_o pole_n as_o tab._n iii_o fig._n 10._o these_o circle_n be_v prick_v out_o as_o the_o aequator_fw-la be_v and_o be_v find_v by_o the_o inclinatory-needle_n be_v carry_v at_o one_o angle_n about_o the_o terrella_n and_o in_o all_o these_o place_n the_o small_a wire_n tab._n iii_o fig._n 9_o and_o directory-needle_n tab._n iii_o fig._n 10_o do_v apply_v their_o axis_fw-la or_o line_n of_o length_n oblique_o to_o the_o axis_fw-la of_o the_o body_n of_o the_o magnet_n a_fw-fr b_o or_o of_o the_o earth_n for_o to_o find_v out_o these_o oblique_a angle_n in_o every_o parallel_n and_o what_o correspondency_n they_o have_v unto_o they_o there_o be_v diverse_a operation_n diagram_n instrument_n and_o calculation_n find_v out_o to_o demonstrate_v and_o to_o know_v what_o angle_n of_o inclination_n will_v answer_v to_o every_o parallel_n for_o in_o every_o parallel_n of_o the_o earth_n the_o inclinatory-needle_n make_v a_o diverse_a angle_n of_o inclination_n to_o the_o axis_fw-la but_o one_o angle_n and_o of_o one_o sort_n in_o one_o and_o the_o same_o elevation_n of_o the_o pole_n or_o parallel_n and_o by_o this_o mean_n of_o the_o inclinatory-needle_n in_o a_o ring_n the_o latitude_n of_o the_o pole_n be_v know_v on_o both_o side_n of_o the_o equinoctial_a without_o any_o sight_n of_o the_o sun_n and_o star_n by_o the_o magnetical_a disposition_n from_o the_o earth_n if_o in_o form_v of_o the_o loadstone_n some_o parallel_n be_v cut_v away_o as_o it_o shall_v seem_v in_o the_o terrella_n by_o cut_v and_o flat_v the_o end_n where_o the_o pole_n be_v tab._n iii_o fig._n 11._o yet_o in_o truth_n they_o remain_v still_o upon_o the_o magnet_n though_o the_o meridian_n line_n be_v change_v from_o crooked_a line_n to_o straight_a line_n and_o this_o be_v to_o be_v observe_v that_o always_o the_o parallel_n near_o 34_o degree_n in_o the_o perfect_a terrella_n semiterrella_n and_o round_a meridian_n or_o straight_a meridian_n where_o the_o directory-needle_n aspect_v that_o edge_n or_o angle_n at_o right_a angle_n unto_o the_o axis_fw-la tab._n iii_o fig._n 11._o and_o tab._n vii_o fig._n 2._o as_o the_o most_o protuberant_a and_o middle_a place_n between_o the_o pole_n and_o the_o aequator_fw-la as_o in_o this_o loadstone_n truncate_v and_o flat_v at_o the_o pole_n in_o the_o parallel_n of_o like_a distance_n from_o the_o pole_n all_o magnetical_a body_n do_v apply_v and_o conform_v alike_o and_o have_v the_o like_a inclination_n of_o their_o axis_fw-la that_o denotate_n like_o elevation_n of_o the_o
make_v right_a angle_n with_o these_o two_o pole_n of_o one_o nature_n as_o tab._n viii_o fig._n 1._o now_o take_v away_o one_o of_o these_o stone_n and_o after_o turn_v the_o north-pole_n a_o towards_o the_o needle_n that_o behold_v the_o south-pole_n b_o of_o the_o other_o stone_n and_o they_o will_v all_o of_o they_o situate_v themselves_o equidistant-wise_a and_o at_o right_a angle_n to_o the_o aequator_n of_o both_o stone_n as_o table_n viii_o fig._n 2._o tab_n viii_o moreover_o take_v other_o two_o magnet_n that_o be_v long_o with_o the_o pole_n in_o the_o end_n like_o that_o tab._n vii_o fig._n 2._o and_o lay_v it_o before_o you_o and_o place_v three_o needle_n before_o it_o two_o at_o the_o end_n &_o one_o in_o the_o midst_n against_o the_o aequator_fw-la which_o will_v apply_v parallel_n to_o the_o axis_fw-la of_o the_o stone_n and_o those_o two_o at_o the_o end_n will_v seat_v themselves_o at_o right_a angle_n to_o the_o axis_fw-la as_o before_o then_o set_v the_o other_o long_a magnet_n that_o have_v his_o pole_n in_o the_o end_n with_o the_o north_n pole_n a_o against_o the_o north-pole_n a_o of_o the_o first_o stone_n tab._n viii_o fig._n 3._o and_o all_o the_o three_o needle_n will_v apply_v themselves_o in_o a_o straight_a line_n parallel_n to_o the_o axis_fw-la somewhat_o like_o the_o order_n of_o the_o first_o type_n yet_o contrariwise_o now_o take_v away_o this_o second_o stone_n with_o the_o pole_n in_o the_o end_n &_o turn_v it_o and_o place_v the_o south_n end_n b_o against_o the_o north_n end_v a_o as_o tab._n viii_o fig._n 4._o and_o then_o the_o 3_o needle_n will_v stand_v at_o right_a angle_n to_o the_o axis_fw-la and_o parallel_v one_o unto_o another_o and_o to_o the_o aequator_fw-la this_o be_v to_o be_v observe_v in_o these_o application_n that_o the_o near_a the_o second_o loadstone_n be_v place_v to_o the_o needle_n in_o aspect_n with_o the_o first_o magnet_n the_o better_a will_v they_o shape_v out_o these_o figure_n of_o application_n &_o in_o the_o approach_n they_o will_v vary_v by_o little_a and_o little_a from_o their_o first_o situation_n until_o the_o virtue_n of_o the_o two_o lodestone_n be_v equal_a in_o their_o orb_n it_o may_v be_v imagine_v that_o these_o application_n for_o the_o most_o part_n shall_v be_v find_v natural_o upon_o the_o earth_n in_o travel_v or_o navigate_a between_o two_o great_a land_n or_o high_a magnetical_a continent_n but_o the_o first_o &_o four_o figure_n of_o this_o eight_o table_n can_v be_v find_v natural_o in_o any_o place_n tab._n viii_o fig._n 1._o and_o fig._n 4._o there_o be_v also_o much_o variety_n of_o variation_n in_o one_o needle_n near_o two_o magnet_n or_o a_o magnet_n and_o magnetical_a body_n as_o place_v a_o needle_n on_o a_o little_a foot_n upon_o the_o terrella_n semiterrella_n or_o loadstone_n and_o it_o will_v direct_v itself_o right_o upon_o the_o meridian_n of_o the_o stone_n as_o have_v be_v prove_v before_o tab._n iii_o fig._n 9_o but_o if_o you_o hold_v a_o little_a piece_n of_o iron_n towards_o the_o point_n of_o the_o needle_n the_o point_n will_v fly_v from_o the_o iron_n and_o deflect_v from_o his_o meridian_n a_o little_a yet_o let_v this_o piece_n of_o iron_n touch_v the_o loadstone_n and_o be_v unite_v unto_o it_o and_o put_v it_o towards_o the_o needle_n a_o far_o off_o and_o the_o needle_n will_v turn_v from_o his_o meridian_n and_o decline_v and_o vary_v towards_o it_o the_o contrary_a be_v to_o be_v say_v if_o this_o iron_n be_v put_v towards_o the_o tail_n of_o the_o needle_n now_o take_v two_o long_a magnet_n that_o have_v their_o pole_n in_o the_o end_n and_o place_v a_o needle_n before_o the_o aequator_fw-la of_o one_o of_o they_o and_o it_o will_v apply_v parallel_n to_o the_o axis_fw-la then_o bring_v the_o other_o loadstone_n and_o place_v the_o end_n where_o the_o pole_n be_v against_o the_o aequator_fw-la of_o the_o first_o loadstone_n as_o ta._n viii_o fig._n 5._o and_o then_o the_o needle_n will_v vary_v his_o position_n and_o seat_n itself_o at_o right_a angle_n to_o the_o axis_fw-la of_o both_o magnet_n so_o also_o take_v two_o lodestone_n and_o let_v one_o of_o they_o have_v the_o pole_n in_o the_o midst_n and_o the_o other_o in_o the_o end_n and_o you_o shall_v behold_v much_o artificial_a variety_n of_o the_o application_n of_o one_o needle_n unto_o they_o place_v a_o needle_n before_o the_o midst_n of_o the_o loadstone_n that_o have_v his_o pole_n in_o the_o midst_n and_o it_o will_v behold_v the_o pole_n after_o lay_v down_o the_o other_o magnet_n that_o have_v his_o pole_n in_o the_o end_n and_o set_v his_o aequator_fw-la against_o the_o needle_n and_o it_o will_v vary_v his_o position_n and_o stand_v parallel_v to_o the_o aequator_fw-la of_o the_o former_a magnet_n who_o pole_n he_o behold_v before_o as_o table_n viii_o fig._n 6._o tab._n ix_o set_a a_o needle_n against_o the_o end_n of_o the_o loadstone_n that_o have_v his_o pole_n in_o the_o end_n and_o it_o will_v rest_v itself_o at_o right_a angle_n to_o the_o axis_fw-la then_o apply_v the_o second_o magnet_n to_o the_o needle_n that_o have_v his_o pole_n in_o the_o midst_n tab._n ix_o fig._n 2._o and_o the_o situation_n of_o the_o needle_n will_v be_v alter_v to_o be_v parallel_n to_o the_o axis_fw-la he_o behold_v at_o right_a angle_n at_o first_o place_v at_o the_o corner_n of_o that_o stone_n that_o have_v the_o pole_n b_o in_o the_o midst_n a_o needle_n and_o it_o will_v apply_v oblique_o then_o lay_v the_o end_n of_o the_o other_o loadstone_n that_o have_v the_o pole_n a_o in_o the_o end_n and_o the_o needle_n will_v apply_v at_o right_a angle_n to_o the_o axis_fw-la of_o both_o the_o stone_n as_o it_o be_v table_n ix_o figure_n 3._o but_o set_v a_o needle_n afore_o the_o end_n of_o the_o stone_n that_o have_v his_o pole_n b_o in_o the_o midst_n and_o set_v the_o end_n of_o the_o other_o magnet_n that_o have_v in_o the_o end_n the_o pole_n b_o of_o the_o same_o denomination_n as_o tab._n x._o fi._n 1._o and_o the_o needle_n will_v apply_v as_o be_v to_o be_v see_v in_o the_o type_n in_o a_o straight_a line_n to_o the_o last_o and_o parallel_v to_o the_o axis_fw-la of_o the_o first_o also_o apply_v the_o aequator_fw-la of_o this_o second_o stone_n that_o have_v the_o pole_n in_o the_o end_n unto_o the_o needle_n placed_z as_o afore_o unto_o the_o first_o stone_n table_n x._o figure_n 2._o and_o the_o needle_n will_v be_v parallel_n to_o both_o axis_fw-la let_v the_o needle_n stand_v against_o the_o corner_n of_o the_o first_o stone_n oblique_o and_o apply_v the_o end_n of_o the_o second_o stone_n with_o the_o pole_n in_o it_o tab._n x._o fig._n 3._o and_o the_o needle_n will_v apply_v as_o in_o the_o tab._n ix_o fig._n 3._o tab_n x_o chap._n xvi_o of_o preserve_v the_o virtue_n of_o magnet_n have_v treat_v of_o the_o part_n of_o the_o magnetical_a body_n of_o their_o motion_n and_o application_n now_o we_o will_v speak_v of_o his_o other_o natural_a virtue_n and_o property_n some_o have_v think_v it_o very_o convenient_a to_o keep_v the_o lodestone_n in_o file_n of_o steel_n and_o iron_n to_o preserve_v their_o virtue_n and_o vigour_n think_v that_o the_o magnet_n be_v feed_v or_o at_o least_o very_o much_o refresh_v with_o they_o because_o they_o will_v cleave_v so_o fast_o to_o the_o side_n near_o the_o pole_n but_o i_o do_v not_o allow_v this_o way_n so_o good_a to_o preserve_v they_o rather_o i_o like_v the_o keep_n of_o they_o in_o a_o bag_n or_o clout_n of_o woollin-cloth_n close_o from_o the_o injury_n of_o the_o heat_n and_o cold_a of_o the_o weather_n or_o in_o a_o case_n or_o box_n fit_a for_o they_o and_o it_o be_v very_o necessary_a to_o wipe_v they_o often_o from_o dust_n and_o grease_n and_o to_o have_v a_o care_n that_o they_o do_v not_o rust_v also_o it_o be_v very_o commodious_a and_o natural_a for_o they_o that_o they_o be_v lay_v up_o and_o place_v according_a to_o that_o natural_a situation_n the_o which_o they_o will_v affect_v and_o respect_n if_o they_o be_v carry_v in_o a_o place_n and_o fashion_v free_a from_o renitency_n and_o resistance_n in_o the_o air_n or_o water_n therefore_o they_o will_v be_v lay_v up_o or_o hang_v according_o as_o their_o pole_n and_o point_n do_v particular_o respect_v to_o the_o north_n and_o south_n which_o will_v comfort_v they_o exceed_o beside_o if_o the_o loadstone_n be_v sometime_o polish_v it_o will_v strengthen_v and_o relieve_v the_o body_n of_o the_o magnet_n very_o much_o if_o a_o weak_a magnet_n be_v rub_v at_o one_o of_o his_o pole_n with_o a_o strong_a loadstone_n he_o will_v be_v better_v by_o it_o in_o his_o vigour_n and_o virtue_n if_o not_o augment_v therein_o set_a a_o magnet_n of_o no_o force_n or_o strength_n
that_o can_v easy_o be_v perceive_v upon_o a_o loadstone_n of_o good_a strength_n and_o vigour_n especial_o upon_o his_o pole_n and_o he_o will_v show_v a_o vigour_n as_o if_o he_o be_v as_o strong_a as_o the_o loadstone_n be_v whereunto_o he_o be_v unite_v but_o after_o that_o he_o be_v take_v away_o he_o will_v be_v as_o weak_a as_o before_o unless_o it_o be_v often_o do_v chap._n xvii_o of_o contribute_v the_o virtue_n magnetical_a to_o iron_n or_o steel_n the_o iron_n bar_v in_o window_n be_v there_o place_v north_n and_o south_n do_v receive_v a_o polar_n virtue_n and_o directory_n faculty_n in_o time_n from_o the_o vigour_n of_o the_o orb_n of_o the_o magnetical_a globe_n of_o the_o earth_n and_o have_v mark_v they_o with_o note_n to_o know_v which_o end_n be_v south_n &_o which_o north_n in_o the_o window_n take_v they_o out_o and_o tie_v a_o three_o about_o the_o midst_n of_o they_o that_o they_o may_v hang_v level_o in_o the_o air_n and_o the_o end_n with_o the_o south_n note_n will_v turn_v itself_o into_o the_o north_n and_o the_o other_o note_n will_v behold_v the_o south_n contrary_a to_o their_o place_n in_o the_o window_n where_o they_o be_v first_o animate_v magnetical_o likewise_o if_o a_o long_a piece_n of_o iron_n be_v forge_v north_n and_o south_n and_o lay_v by_o to_o cool_v in_o the_o same_o situation_n he_o will_v be_v animate_v and_o endue_v with_o a_o polar_n virtue_n and_o move_v in_o the_o air_n be_v hang_v in_o a_o three_o or_o put_v in_o a_o boat_n on_o the_o water_n and_o turn_v to_o the_o contrary_a pole_n to_o that_o from_o which_o he_o first_o receive_v the_o magnetical_a vigour_n if_o a_o rod_n of_o iron_n a_o wire_n or_o directory-needle_n be_v overheat_n in_o the_o fire_n so_o that_o they_o have_v lose_v all_o magnetical_a vigour_n to_o direct_v they_o north_n or_o south_n yet_o let_v they_o be_v touch_v with_o the_o loadstone_n at_o one_o end_n only_o and_o they_o will_v be_v excite_v with_o a_o directory_n and_o polar_n vigour_n at_o both_o end_n and_o the_o one_o end_n of_o the_o semidiamiter_n will_v be_v of_o the_o north_n and_o the_o other_o of_o the_o south_n province_n and_o nature_n and_o be_v place_v according_a to_o magnetical_a order_n will_v direct_v their_o point_n to_o the_o north_n &_o south_n contrary_a to_o the_o pole_n that_o animate_v they_o with_o this_o virtue_n polar_n also_o take_v rod_n of_o iron_n wire_n and_o magnetical_a needle_n that_o have_v never_o be_v touch_v with_o the_o loadstone_n and_o rub_v they_o upon_o the_o pole_n caps_z or_o tooth_n of_o the_o loadstone_n at_o the_o end_n and_o they_o will_v be_v much_o refresh_v vigorate_v and_o animate_v with_o the_o polar_n and_o directory_a virtue_n at_o both_o end_n both_o of_o the_o north_n and_o southpole_n as_o though_o they_o have_v a_o new_a life_n of_o quickness_n infuse_v into_o they_o and_o these_o shall_v refresh_v other_o needle_n that_o shall_v be_v touch_v with_o they_o and_o apprehend_v and_o draw_v they_o away_o like_o captive_n and_o will_v not_o let_v they_o loose_v from_o they_o unless_o by_o force_n you_o sever_v they_o the_o best_a way_n to_o touch_v incite_v and_o give_v the_o polar_n directory_n and_o magnetical_a vigour_n and_o faculty_n unto_o needle_n &_o mariner_n compass_n be_v to_o rub_v they_o from_o the_o midst_n of_o the_o needle_n where_o the_o aequator_fw-la of_o their_o axis_fw-la be_v unto_o their_o point_n upon_o the_o pole_n cap_n or_o tooth_n of_o the_o loadstone_n draw_v they_o thus_o from_o their_o middle_n to_o the_o end_n upon_o the_o cap_n pole_n or_o parallel_v near_o the_o same_o unto_o the_o axis_fw-la or_o at_o right_a angle_n to_o it_o they_o after_o draw_v the_o other_o end_n upon_o the_o other_o pole_n cap_n or_o tooth_n diverse_a time_n as_o afore_o and_o these_o needle_n wire_n and_o plate_n for_o compass_n shall_v be_v perfect_o touch_v and_o vigorate_v in_o long_a lodestone_n that_o have_v the_o pole_n in_o the_o end_n if_o a_o wire_n be_v draw_v parallel_n to_o the_o axis_fw-la from_o the_o pole_n end_v to_o the_o aequator_fw-la it_o will_v be_v incite_v with_o that_o pole_n it_o be_v doubt_v whether_o the_o touch_n and_o polar_n virtue_n will_v be_v give_v as_o well_o from_o a_o parallel_n some_o distance_n from_o the_o pole_n as_o from_o the_o pole_n itself_o it_o be_v plain_a that_o from_o those_o parallel_n and_o part_n near_o adjoin_v to_o the_o pole_n the_o great_a vigour_n of_o polity_n magnetical_a do_v proceed_v yet_o in_o parallel_n near_a the_o aequator_fw-la it_o will_v be_v give_v likewise_o &_o the_o virtue_n directory_n will_v be_v very_o sufficient_a if_o you_o touch_v the_o needle_n among_o the_o parallel_n it_o be_v the_o best_a way_n to_o rub_v the_o needle_n alongst_o the_o meridians_fw-la towards_o the_o pole_n rather_o than_o to_o rub_v the_o cross_a the_o meridians_fw-la in_o a_o parallel_n manner_n yet_o this_o way_n will_v give_v the_o polar_n and_o magnetical_a virtue_n also_o some_o have_v think_v it_o better_a to_o touch_v compass_n and_o magnetical_a needle_n rather_o on_o the_o loadstone_n then_o upon_o their_o cap_n think_v that_o the_o vigour_n and_o faculty_n magnetical_a will_v continue_v long_a that_o be_v give_v from_o the_o bare_a magnet_n stone_n the_o truth_n be_v to_o be_v observe_v in_o time_n yet_o the_o cap_n and_o tooth_n give_v and_o impart_v a_o strong_a vigour_n to_o the_o needle_n than_o the_o bare_a stone_n do_v because_o the_o virtue_n of_o the_o loadstone_n be_v increase_v as_o much_o by_o the_o armour_n and_o cap_n as_o if_o his_o bulk_n simple_o be_v tripled_a needle_n and_o wire_n of_o steel_n heat_v to_o a_o height_n and_o reduce_v back_o to_o a_o bluish_a colour_n will_v receive_v a_o strong_a touch_n and_o retain_v it_o ten_o time_n long_o than_o iron_n will_v howsoever_o he_o be_v harden_v yet_o iron_n be_v best_a for_o cap_n place_v near_o the_o stone_n that_o end_n of_o the_o needle_n whether_o directory_n or_o inclinatory_n which_o be_v to_o be_v touch_v aught_o to_o be_v somewhat_o light_a than_o the_o other_o especial_o for_o the_o north_n and_o most_o vigorous_a touch_n end_n of_o the_o stone_n because_o that_o the_o touch_v will_v sway_v down_o a_o little_a and_o the_o needle_n have_v two_o motion_n one_o of_o direction_n the_o other_o of_o inclination_n and_o then_o the_o needle_n and_o compass_n will_v play_v more_o level_a and_o aequidistant_a to_o the_o horizon_n for_o the_o say_a use_n when_o any_o magnetical_a needle_n or_o wire_n be_v touch_v from_o the_o north-pole_n or_o tooth_n of_o the_o adamant_n that_o end_n of_o the_o needle_n will_v respect_v the_o north-pole_n of_o the_o magnet_n but_o be_v sever_v out_o of_o the_o orb_n of_o the_o adamant_n it_o will_v be_v direct_v into_o the_o south_n by_o the_o magnetical_a virtue_n of_o the_o earth_n but_o if_o a_o round_a globe_n or_o ring_n of_o iron_n be_v touch_v with_o the_o north-pole_n of_o the_o stone_n the_o place_n touch_v will_v have_v the_o virtue_n of_o the_o south-pole_n &_o the_o north-pole_n will_v be_v in_o the_o opposite_a part_n and_o be_v sever_v from_o the_o magnet_n it_o will_v not_o turn_v to_o the_o contrary_a part_n as_o it_o fall_v out_o in_o long_o magnetical_a needle_n &_o compass_n as_o before_o if_o a_o ring_n of_o iron_n be_v touch_v the_o correspondent_a pole_n will_v be_v in_o the_o opposite_a part_n but_o if_o this_o ring_n be_v cut_v asunder_o and_o make_v a_o straight_a wire_n than_o both_o end_n will_v have_v the_o vigour_n of_o one_o pole_n only_o excite_v a_o directory_n needle_n at_o both_o end_n from_o one_o pole_n and_o they_o will_v both_o be_v of_o one_o nature_n and_o look_v what_o point_n be_v last_o touch_v and_o that_o will_v turn_v as_o if_o he_o only_o be_v touch_v and_o direct_v more_o sure_o with_o less_o waver_v too_o and_o fro_o than_o the_o other_o touching_n will_n speak_v of_o before_o let_v a_o long_a piece_n of_o clay_n new_o burn_v cool_a north_n and_o south_n and_o it_o will_v receive_v power_n magnetical_a from_o the_o earth_n set_a two_o lodestone_n with_o their_o pole_n of_o one_o denomination_n at_o the_o end_n of_o a_o piece_n of_o clay_n while_o it_o cool_v and_o both_o end_n will_v be_v of_o one_o nature_n if_o a_o long_a wire_n be_v touch_v in_o the_o midst_n by_o the_o loadstone_n and_o pass_v through_o a_o cork_n and_o set_v for_o to_o swim_v in_o the_o water_n it_o will_v waver_v up_o and_o down_o uncertaine_o as_o though_o it_o be_v not_o touch_v but_o if_o it_o chance_v to_o rest_v itself_o towards_o the_o pole_n in_o time_n it_o will_v be_v endue_v with_o his_o virtue_n set_a a_o piece_n of_o iron_n upon_o a_o loadstone_n as_o you_o do_v a_o weak_a magnet_n in_o the_o end_n of_o the_o former_a chapter_n and_o
cut_v the_o vertical_a line_n b_o d_o into_o m_n and_o the_o parallel_n of_o the_o declination_n of_o the_o sun_n h_n i_o into_o n_n from_o m_n a_o centre_n describe_v a_o semicircle_n to_o k_o l_o and_o from_o n_z draw_v a_o perpendicular_a line_n with_o k_o l_o unto_o this_o semicircle_n devide_v the_o same_o in_o o_o and_o join_v m_o o_fw-fr by_o a_o line_n together_o for_o the_o distance_n of_o the_o azimuth_n from_o the_o true_a meridian_n which_o be_v resolve_v into_o degree_n and_o compare_v with_o the_o magnetical_a azimuth_n the_o difference_n between_o these_o azimuth_n show_v the_o degree_n of_o the_o variation_n of_o the_o compass_n chap._n xxx_o of_o find_v the_o variation_n of_o the_o compass_n by_o a_o equinoctial_a dial_n provide_v in_o a_o readiness_n a_o universal_a equinoctial_a dial_n upon_o a_o plain_a that_o may_v artificial_o be_v erect_v to_o the_o height_n of_o the_o complement_n of_o the_o latitude_n of_o the_o pole_n for_o the_o place_n of_o observation_n and_o upon_o the_o centre_n of_o the_o equinoctiall-circle_n place_n a_o ruler_n and_o at_o either_o end_n of_o the_o ruler_n erect_v a_o plate_n of_o brass_n little_o more_o than_o a_o quarter_n of_o a_o inch_n broad_a that_o may_v with_o jointe_n convenient_o be_v raise_v at_o right_a angle_n to_o the_o ruler_n and_o superficies_n of_o the_o dial_n and_o upon_o these_o plate_n place_v the_o division_n of_o the_o trigon_n of_o the_o twelve_o sign_n after_o this_o manner_n tab._n xv._o fig._n 2._o draw_v a_o straight_a line_n a_o b_o and_o from_o a_o centre_n describe_v a_o quadrant_a of_o a_o circle_n to_o c_o and_o let_v c_o a_fw-fr cut_v a_o b_o at_o right_a angle_n then_o divide_v the_o quadrant_a c_o b_o into_o ninty_a degree_n then_o from_o b_o towards_o c_o number_v the_o great_a declination_n of_o the_o sun_n which_o be_v 23_o degree_n and_o a_o half_a end_v in_o d_o and_z at_z d_o draw_v a_o line_n at_o right_a angle_n to_o a_o b_o which_z be_v d_o b_o and_o set_v the_o length_n of_o the_o line_n d_o b_o from_o a_o to_o h_z in_o the_o line_n a_o c_o then_z produce_v the_o line_n a_o b_o obscure_o to_o e_z and_z from_z b_o as_o a_o centre_n according_a unto_o the_o distance_n b_o d_o make_v a_o obscure_a semicircle_n over_o the_o line_n a_o b_o e_o divide_z this_o semicircle_n into_o six_o part_n for_o six_o sign_n every_o division_n contain_v 30_o degree_n when_o it_o shall_v be_v subdivided_n then_o join_v these_o division_n together_o in_o parallel_n line_n to_o a_o b_o e_o for_o the_o begin_n of_o the_o six_o south-signe_n then_o from_o d_o b_o draw_v a_o parallel_n line_n f_o g_o according_a to_o the_o breadth_n of_o the_o plate_n and_o from_o d_o to_z f_o make_v a_o parallel_n to_o a_o b_o e_z in_o d_o f_z the_o plate_n be_v somewhat_o high_o make_v a_o hole_n as_o in_o a_o diopter_fw-la that_o the_o sun_n may_v shine_v in_o at_o it_o in_o summer_n time_n upon_o the_o other_o plate_n at_o a_o h_z for_o the_o north-signe_n which_o plate_n a_o h_z i_o k_o will_v be_v of_o the_o same_o breadth_n and_o height_n that_o b_o d_o f_o g_o be_v then_o let_v the_o obscure_a parallel_n line_n of_o the_o begin_n of_o the_o south_n sign_n be_v draw_v upon_o this_o plate_n place_n ♎_o libra_n above_o the_o line_n b_o g_o â™_o scorpio_n above_o next_o line_n â™_o sagitary_n above_o the_o next_o line_n and_o under_o the_o line_n d_o f_o place_v ♑_o capricornus_fw-la under_o the_o next_o â™’_o aquarius_n and_o under_o the_o next_o ♓_o piscis_fw-la the_o other_o plate_n for_o the_o north-signe_n mnst_a have_v the_o same_o parallel_n line_n in_o it_o that_o this_o have_v for_o the_o begin_n of_o the_o north-signe_n and_o a_o hole_n in_o it_o for_o the_o diopter_fw-mi that_o the_o sun_n may_v pass_v through_o it_o to_o the_o first_o plate_n of_o the_o winter-signe_n to_o show_v they_o that_o part_n of_o the_o plate_n or_o end_n that_o have_v the_o diopter_fw-mi in_o it_o be_v to_o be_v place_v in_o the_o line_n b_o a_o k_n contrary_a to_o the_o situation_n of_o the_o parallel_n in_o the_o first_o plate_n &_o under_o the_o upper-most_a line_n h_o i_o place_z ♈_o aries_n under_o the_o next_o ♉_o taurus_n under_o the_o next_o ♊_o gemeni_fw-la then_o above_o that_o line_n that_o have_v the_o diopter_fw-la in_o it_o place_n ♋_o cancer_n above_o the_o next_o ♌_o leo_n and_o above_o the_o next_o â™_o virgo_fw-la so_o be_v all_o the_o character_n of_o the_o sign_n place_v in_o their_o plate_n let_v the_o ruler_n be_v of_o the_o breadth_n of_o the_o plate_n and_o in_o the_o midst_n of_o it_o draw_v a_o line_n and_o in_o the_o middle_n of_o it_o make_v a_o hole_n of_o the_o centre_n l_o the_o better_a to_o be_v fasten_v to_o the_o centre_n of_o the_o equinoctial_a k_n and_o m_o must_v be_v artificial_o join_v with_o joint_n together_o and_o g_o n_z at_o which_o the_o ruler_n from_o l_o be_v produce_v to_o make_v a_o index_n upon_o the_o equinoctialldyall_n to_o show_v his_o hour_n as_o it_o be_v tab._n xv._o fig._n 2._o moreov_a there_o be_v to_o be_v place_v in_o the_o foot_n of_o this_o equiquinoctiall_a dial_n a_o large_a directory-needle_n have_v his_o outer-most_a circle_n divide_v into_o four_o ninty_n begin_v to_o number_v the_o part_n from_o the_o meridian_n to_o the_o east_n or_o west_n this_o equinoctial_a dial_n be_v thus_o furnish_v with_o the_o ruler_n and_o plate_n for_o the_o zodiac_n and_o the_o directory-needle_n and_o erect_v to_o the_o equinoctial_a of_o the_o place_n where_o the_o observation_n be_v make_v turn_v the_o whole_a frame_n of_o the_o dial_n and_o ruler_n about_o with_o his_o plate_n until_o the_o suune-shine_a direct_o upon_o the_o sign_n and_o part_n that_o he_o be_v in_o for_o that_o day_n than_o his_o whole_a frame_n will_v stand_v in_o the_o true_a meridian_n and_o the_o directory-needle_n will_v stand_v in_o his_o magnetical_a meridian_n and_o point_n out_o so_o many_o part_n in_o his_o horizontall_a circle_n as_o his_o variation_n in_o that_o place_n be_v to_o the_o east_n or_o west_n which_o be_v to_o be_v note_v down_o and_o the_o ruler_n in_o the_o equinoctial_a circle_n show_v the_o true_a hour_n and_o part_n of_o the_o sun_n for_o that_o day_n and_o instant_n tab_n xvi_o chap._n xxxi_o of_o find_v the_o variation_n of_o the_o compass_n by_o ring_n there_o be_v a_o other_o instrument_n consist_v of_o four_o ring_n of_o brass_n one_o to_o be_v place_v within_o the_o other_o which_o be_v a_o universal_a dial_n have_v a_o directory-needle_n in_o a_o box_n fasten_v at_o the_o bottom_n of_o the_o same_o which_o do_v show_v likewise_o present_o the_o variation_n of_o the_o compass_n hang_v perpendicular_o tab._n xvi_o the_o first_o two_o ring_n of_o this_o instrument_n be_v two_o meridians_fw-la the_o outer-most_a be_v broad_a and_o have_v a_o ring_n to_o hold_v it_o by_o fasten_v it_o to_o the_o upper_a end_n or_o top_n and_o the_o north-quadrant_a towards_o the_o ring_n or_o handle_v be_v divide_v into_o ninty_a degree_n for_o the_o number_n of_o the_o altitude_n of_o the_o pole_n also_o this_o ring_n have_v fasten_v unto_o it_o at_o the_o bottom_n a_o directory-needle_n in_o his_o box_n the_o limb_n whereof_o be_v divide_v into_o two_o ninty_n from_o the_o meridian_n to_o the_o east_n and_o west_n within_o the_o ring_n of_o this_o broad_a meridian_n there_o be_v a_o other_o meridian-ring_n place_v so_o keep_v on_o the_o side_n that_o it_o may_v be_v move_v high_a or_o low_o so_o that_o his_o broad_a index_n fasten_v unto_o one_o of_o the_o four_o quadrant_n may_v be_v set_v to_o point_n out_o the_o degree_n of_o the_o altitude_n of_o the_o pole_n this_o index_n have_v a_o low_a end_n for_o to_o stay_v the_o four_o ring_n that_o carry_v the_o trigon_n of_o the_o sign_n and_o a_o thread_n like_o a_o axis_fw-la with_o a_o movable_a bead_n thereon_o the_o three_o ring_n within_o the_o second_o be_v for_o the_o equinoctial_a circle_n and_o it_o be_v fasten_v to_o the_o movable_a meridian-ring_n at_o right_a angle_n to_o the_o elevation_n of_o the_o pole_n by_o two_o pin_n whereon_o it_o may_v be_v move_v at_o right_a angle_n to_o the_o meridian_n though_o it_o will_v be_v lay_v within_o the_o say_a meridian_n in_o the_o inner_a part_n of_o this_o ring_n there_o be_v a_o circle_n to_o be_v draw_v for_o the_o equinoctial_a circle_n and_o to_o be_v divide_v into_o 24_o part_n for_o the_o hour_n of_o the_o day_n from_o the_o meridian_n and_o subdivided_n with_o convenient_a line_n and_o figure_n the_o four_o ring_n be_v fit_v within_o this_o equinoctial_a ring_n and_o at_o six_o of_o the_o clock_n or_o at_o the_o east_n and_o west_n be_v fasten_v to_o it_o with_o two_o pin_n to_o move_v at_o right_a
fill_v with_o other_o substance_n different_a from_o magnetical_a nature_n and_o many_o mountain_n magnetical_a mount_v above_o these_o substance_n high_a and_o low_o so_o that_o some_o attract_v be_v above_o the_o point_n of_o the_o inclinatory-needle_n some_o be_v under_o it_o some_o place_v before_o it_o draw_v the_o point_n of_o the_o inclinatory-needle_n up_o unto_o they_o other_o behind_z it_o be_v also_o adamantive_a fort_n will_v have_v this_o inclinatory-needle_n strike_v sail_n to_o they_o also_o by_o which_o mean_v the_o natural_a conformity_n of_o the_o inclinatory-needle_n to_o his_o natural_a angle_n be_v much_o disturb_v and_o deprave_a whereby_o it_o come_v to_o pass_v that_o this_o needle_n have_v his_o variation_n also_o as_o well_o as_o the_o directory_n needle_n have_v as_o be_v before_o demonstrate_v therefore_o the_o variation_n of_o the_o inclinatory-needle_n be_v when_o in_o one_o altitude_n of_o the_o pole_n this_o needle_n point_v out_o another_o angle_n different_a from_o the_o true_a and_o respondent_fw-la angle_n of_o that_o latitude_n of_o the_o pole_n be_v hinder_v by_o a_o mountain_n or_o part_v magnetical_a that_o do_v attract_v one_o of_o the_o point_n of_o the_o inclinatory-needle_n approach_v near_o unto_o it_o either_o near_o the_o pole_n or_o aequator_fw-la in_o so_o much_o that_o the_o angle_n of_o inclination_n be_v make_v less_o or_o more_o than_o it_o natural_o will_v be_v in_o sail_v east_n or_o west_n upon_o a_o parallel_n have_v high_a land_n on_o the_o side_n towards_o the_o pole_n consist_v of_o magnetical_a substance_n this_o will_v attract_v the_o inclinatory-needle_n and_o cause_v his_o natural_a position_n to_o be_v more_o perpendicular_a than_o it_o will_v be_v if_o the_o shore_n about_o the_o pole_n be_v situate_v between_o the_o inclinatory-needle_n and_o the_o aequator_fw-la this_o adamantine_a eminency_n will_v attract_v the_o needle_n unto_o it_o make_v his_o inclination_n less_o plumbe_v then_o natural_o it_o be_v in_o sail_v east_n or_o west_n near_o the_o equinoctial_a where_o the_o carriage_n of_o the_o inclinatory-needle_n be_v less_o perpendicular_a and_o more_o tend_v to_o the_o level_a with_o the_o horizon_n the_o magnetical_a eminency_n between_o the_o pole_n and_o the_o needle_n will_v pull_v down_o the_o high_a end_n of_o the_o same_o and_o make_v he_o more_o parallel_n to_o the_o axis_fw-la of_o the_o earth_n then_o natural_o he_o can_v endure_v even_o so_o a_o adamantine_a mountain_n between_o the_o inclinatory-needle_n and_o the_o equinoctial_a line_n will_v lift_v up_o the_o low_a end_n of_o this_o needle_n be_v within_o the_o magnetical_a vigour_n of_o that_o mountain_n and_o make_v he_o more_o parallel_n with_o the_o horizon_n than_o his_o natural_a conformity_n require_v in_o that_o parallel_n the_o variation_n of_o the_o inclinatory-needle_n be_v great_a in_o the_o part_n near_o the_o equinoctial_a than_o it_o be_v in_o the_o part_n near_o the_o pole_n where_o this_o needle_n be_v not_o attract_v so_o many_o degree_n from_o his_o natural_a angle_n as_o usual_o he_o be_v near_o the_o equinoctial_a if_o in_o the_o part_n near_o the_o pole_n the_o inclinatory-needle_n be_v carry_v between_o two_o eminence_n magnetical_a in_o that_o space_n of_o the_o straight_o where_o both_o their_o vigour_n be_v of_o like_a validity_n they_o will_v make_v the_o application_n of_o this_o needle_n perpendicular_a cross_v they_o both_o at_o all_o right_a angle_n not_o much_o unlike_a as_o it_o be_v in_o xv._o chapter_n of_o application_n table_n viii_o fig._n 1_o in_o sail_v near_o the_o equinoctial_a in_o strait_n between_o two_o adamantine_a mountain_n who_o vigour_n attractive_a surpass_v the_o general_a virtue_n disponent_fw-la of_o the_o magnetical_a globe_n of_o the_o earth_n these_o will_v lay_v the_o inclinatory-needle_n in_o a_o parallel_n and_o level_v to_o the_o horizon_n though_o they_o be_v many_o degree_n from_o the_o equinoctial_a as_o chapter_n xv._o tab_n viii_o fig._n 2._o last_o in_o pass_v or_o sail_v near_o and_o over_o a_o vigorous_a magnetical_a rock_n in_o the_o sea_n or_o earth_n under_o we_o in_o approach_v near_o unto_o it_o the_o same_o will_v attract_v the_o inclinatory-needle_n from_o his_o right_a place_n and_o come_v near_o the_o rock_n it_o will_v alter_v he_o much_o more_o and_o pass_v over_o the_o same_o it_o will_v attract_v the_o needle_n perpendicular_o and_o be_v pass_v this_o needle_n will_v be_v free_v by_o little_a and_o little_a from_o that_o disturbance_n of_o his_o natural_a inclination_n these_o variety_n be_v find_v upon_o the_o magnetical_a globe_n or_o terrella_n by_o have_v a_o convenient_a piece_n or_o piece_n of_o iron_n place_v thereon_o as_o have_v be_v say_v and_o place_v the_o inclinatory-needle_n before_o describe_v in_o the_o ii_o chapter_n the_o one_o of_o they_o put_v upon_o a_o lutestring_n the_o other_o in_o his_o frame_n tab._n ii_o fig._n 17._o 18_o or_o 19_o so_o that_o i_o hope_v i_o need_v not_o set_v down_o any_o type_n hereof_o for_o the_o ingenious_a will_n better_o conceive_v how_o to_o gather_v this_o matter_n from_o the_o globe_n of_o the_o loadstone_n than_o i_o can_v possible_o explain_v in_o many_o troublesome_a figure_n or_o the_o workman_n deliniat_fw-la by_o his_o skill_n unto_o you_o in_o print_a table_n and_o figure_n chap._n xxxxii._n of_o find_v the_o variation_n of_o the_o inclinatory-needle_n have_v declare_v the_o manifold_a cause_n of_o the_o variation_n of_o the_o inclinatory-needle_n from_o his_o true_a and_o natural_a angle_n of_o inclination_n with_o the_o horizon_n it_o follow_v that_o we_o deliver_v plain_o how_o to_o discern_v these_o event_n when_o they_o shall_v fall_v out_o which_o be_v know_v perfect_o by_o have_v the_o true_a elevation_n of_o the_o pole_n where_o these_o matter_n shall_v be_v require_v the_o rule_n and_o way_n how_o to_o know_v the_o elevation_n of_o the_o pole_n in_o all_o place_n be_v so_o perfect_o set_v out_o by_o most_o astronomer_n and_o writer_n of_o navigation_n and_o so_o well_o know_v to_o all_o expert_a pilot_n that_o it_o be_v a_o thing_n needless_a here_o to_o repeat_v they_o beside_o the_o ingenious_a pilot_n know_v the_o elevation_n of_o the_o pole_n in_o some_o place_n of_o his_o voyage_n that_o he_o have_v pass_v by_o keep_v a_o true_a not_o a_o dead_a reckon_n of_o his_o course_n in_o prick_v his_o card_n aright_o and_o observe_v the_o way_n with_o the_o logge-line_n with_o other_o currant_n and_o occurrant_n will_v give_v a_o very_a artificial_a conjecture_n of_o the_o elevation_n of_o the_o pole_n in_o that_o place_n where_o he_o be_v though_o he_o see_v neither_o sun_n nor_o star_n notwithstanding_o because_o the_o skilful_a pilot_n may_v be_v hinder_v in_o this_o kind_n of_o observation_n by_o the_o fall_n of_o the_o ship_n to_o lee-ward_n and_o by_o other_o extraordinary_a change_n of_o weather_n and_o other_o disturbance_n that_o may_v many_o way_n fall_v out_o at_o sea_n therefore_o i_o will_v only_o remember_v one_o way_n out_o of_o the_o principal_n before_o deliver_v whereby_o he_o may_v at_o any_o time_n of_o the_o day_n the_o sun_n shine_v know_v the_o altitude_n of_o the_o pole_n this_o thing_n be_v chief_o perform_v by_o know_v the_o true_a variation_n of_o the_o compass_n which_o show_v the_o true_a meridian_n for_o that_o place_n present_o seek_v out_o the_o true_a azimuth_n also_o which_o be_v perfect_o know_v by_o the_o shadow_n of_o the_o sun_n upon_o the_o limb_n of_o the_o compass_n by_o the_o furniture_n of_o the_o beam_n before_o describe_v instant_o take_v the_o altitude_n of_o the_o sun_n by_o the_o jacobs_n staff_n at_o sea_n or_o a_o large_a quadrant_a at_o land_n the_o true_a azimuth_n and_o almicanter_n thus_o know_v seek_v the_o point_n where_o they_o cross_v the_o one_o the_o other_o in_o the_o rete_fw-la of_o the_o mathematical_a jewel_n and_o astrolabium_fw-la catholicum_fw-la then_o observe_v the_o parallel_n of_o the_o sun_n declination_n for_o that_o day_n turn_v about_o the_o rete_fw-la of_o this_o instrument_n until_o this_o parallel_n of_o the_o sun_n declination_n be_v touch_v by_o the_o point_n where_o these_o two_o circle_n of_o altitude_n and_o position_n meet_v and_o then_o the_o horizon_n of_o the_o rete_fw-la will_v show_v in_o the_o limb_n the_o latitude_n of_o that_o place_n the_o latitude_n of_o the_o pole_n for_o any_o place_n be_v know_v the_o true_a angle_n of_o the_o inclinatory-needle_n be_v manifest_a and_o apparent_a as_o it_o be_v set_v down_o and_o know_v by_o the_o xiii_o chapter_n in_o the_o chapter_n to_o know_v the_o angle_n of_o inclination_n by_o the_o instrument_n and_o in_o the_o table_n of_o the_o degree_n of_o the_o inclinatory-needle_n answerable_a to_o every_o elevation_n of_o the_o pole_n now_o observe_v the_o degree_n that_o the_o inclinatory-needle_n point_v out_o in_o his_o ring_n in_o that_o place_n and_o take_v the_o difference_n of_o these_o from_o the_o degree_n of_o the_o
pole_n the_o outward_a external_a semicircle_n f_o h_o g_o we_o will_v term_v the_o meridian_n inclinatory_a semicircle_n because_o the_o needle_n inclinatory_n do_v show_v in_o these_o quadrant_n certain_a part_n and_o degree_n answerable_a to_o every_o degree_n of_o the_o elevation_n of_o the_o pole_n of_o the_o terrella_n or_o semiterrella_n declare_v in_o the_o inner_a quadrant_n of_o altitude_n of_o the_o pole_n for_o practice_v hereof_o if_o it_o be_v desire_v to_o know_v where_o the_o pole_n be_v elevate_v ten_o degree_n above_o the_o horizon_n what_o degree_n the_o inclinatory-needle_n will_v point_v at_o in_o the_o inclinatory_a meridian_n semicircle_n answerable_a thereunto_o here_o turn_v about_o the_o limb_n and_o verge_n until_o ten_o degree_n of_o the_o semicircle_n of_o altitude_n be_v place_v just_a with_o the_o pole_n a_o the_o pole_n be_v elevate_v so_o many_o degree_n above_o the_o horizon_n then_o look_v in_o the_o quadrant_a of_o the_o meridian_n inclinatory_a semicircle_n and_o his_o needle_n will_v point_v to_o 20_o degree_n the_o very_a true_a part_n the_o inclinatory-needle_n be_v place_v in_o his_o ring_n and_o meridian_n circle_n hereafter_o to_o be_v describe_v will_v point_v at_o in_o travel_v where_o the_o pole_n be_v elevate_v ten_o degree_n after_o this_o manner_n seek_v out_o what_o will_v be_v correspondent_a where_o the_o latitude_n of_o the_o pole_n shall_v be_v 20_o or_o 30_o degree_n and_o this_o needle_n will_v point_v out_o the_o correspondent_a degree_n of_o the_o angle_n of_o inclination_n in_o the_o meridian-inclinatory_a semicircle_n to_o these_o or_o any_o elevation_n that_o shall_v be_v desire_v therefore_o here_o you_o see_v how_o profitable_a and_o of_o what_o great_a use_n this_o demonstration_n be_v in_o help_v to_o attain_v to_o the_o reason_n &_o true_a knowledge_n of_o the_o inclinatory-needle_n which_o place_v in_o his_o ring_n and_o carry_v about_o the_o earth_n in_o the_o meridian_n do_v only_o show_v his_o angle_n and_o inclination_n to_o the_o axis_fw-la but_o this_o demonstration_n direct_v from_o the_o stone_n itself_o what_o will_v be_v the_o number_n of_o degree_n that_o the_o angle_n of_o the_o inclination_n make_v above_o the_o horizon_n and_o what_o degree_n of_o the_o elevation_n of_o the_o pole_n will_v be_v answerable_a thereto_o and_o from_o hence_o table_n may_v be_v make_v and_o collect_v what_o degree_n of_o the_o inclinatory-needle_n will_v be_v answerable_a to_o every_o elevation_n of_o the_o pole_n chap._n xiiii_o of_o the_o distance_n and_o orb_n of_o the_o magnet_n virtue_n tab._n vi_o place_v wire_n about_o a_o inch_n in_o length_n within_o their_o length_n in_o the_o orb_n of_o a_o good_a magnet_n and_o they_o will_v skip_v unto_o the_o magnet_n as_o though_o they_o be_v quick_a and_o will_v unite_v and_o adhere_v fast_o unto_o it_o until_o they_o be_v take_v off_o the_o celerity_n of_o motion_n attraction_n and_o conformity_n within_o the_o magnetical_a orb_n be_v according_a to_o the_o goodness_n of_o the_o loadstone_n the_o greatness_n of_o his_o bulk_n conveniency_n of_o his_o figure_n and_o smoothness_n and_o in_o the_o shortness_n of_o the_o distance_n in_o the_o air_n or_o in_o water_n yet_o further_o than_o in_o these_o the_o loadstone_n extend_v his_o virtue_n by_o contaction_n and_o continuation_n in_o a_o long_a wire_n set_v unto_o his_o pole_n which_o wire_n will_v move_v a_o needle_n or_o adhere_v to_o another_o wire_n at_o the_o end_n of_o his_o length_n but_o this_o be_v do_v by_o augmentation_n of_o the_o lodestone_n vigour_n as_o shall_v be_v declare_v although_o that_o such_o substance_n which_o be_v not_o magnetical_a be_v place_v between_o the_o needle_n and_o loadstone_n yet_o they_o can_v hinder_v the_o orb_n and_o proceed_n of_o the_o magnetical_a vigour_n as_o if_o a_o loadstone_n shall_v be_v enclose_v in_o a_o box_n of_o wood_n stone_n tin_n silver_n or_o brass_n yet_o the_o loadstone_n will_v extend_v his_o magnetical_a orb_n wherein_o many_o pretty_a and_o ingenious_a magnetical_a practice_n may_v be_v wrought_v admirable_a to_o behold_v as_o have_v the_o form_n and_o protractor_n of_o creep_a thing_n beast_n footman_n horseman_n and_o fly_v draw_v in_o past-boord_n have_v but_o a_o short_a wire_n close_o convey_v into_o they_o and_o place_v upon_o a_o trencher_n paper_n or_o plate_n shall_v be_v cause_v to_o move_v stir_v pass_v on_o and_o flicker_v as_o though_o they_o be_v alive_a only_o by_o move_v the_o pole_n of_o a_o good_a magnet_n direct_o under_o they_o also_o if_o a_o magnet_n be_v fasten_v in_o the_o roof_n or_o over_o a_o door_n it_o will_v hold_v a_o iron_n weight_n in_o the_o air_n tab._n vi_o fig._n 2._o that_o have_v a_o thread_n fasten_v to_o it_o to_o hold_v it_o short_a that_o it_o be_v not_o draw_v close_o for_o to_o be_v unite_v unto_o the_o loadstone_n likewise_o if_o a_o short_a piece_n of_o iron_n or_o cap_n be_v hold_v within_o a_o inch_n of_o a_o strong_a magnet_n stone_n tab._n vi_o fi._n 3._o it_o will_v take_v up_o great_a weight_n in_o this_o orb_n though_o not_o so_o much_o as_o if_o it_o touch_v the_o stone_n and_o pole_n but_o if_o the_o cap_n be_v hold_v over_o the_o pole_n it_o will_v hold_v a_o weight_n up_o rather_o then_o the_o pole_n tab._n vi_o fig._n 6._o i_o hold_v it_o needless_a to_o demonstrate_v how_o all_o the_o needle_n of_o dial_n magnetical_a instrument_n the_o mariner_n compass_n and_o inclinatoryre_v do_v all_o of_o they_o move_v within_o the_o orb_n of_o the_o magnetical_a vigour_n of_o the_o earth_n only_o i_o will_v show_v you_o a_o pretty_a practice_n or_o two_o for_o delight_n get_v a_o wire_n of_o four_o or_o five_o inch_n in_o length_n and_o thrust_v it_o through_o a_o cork_n than_o it_o be_v touch_v with_o the_o loadstone_n place_v it_o in_o a_o basin_n of_o water_n and_o it_o will_v move_v and_o direct_v itself_o north_n and_o south_n by_o the_o vigorous_a orb_n of_o the_o earth_n tab._n vi_o fig._n 4._o and_o also_o incline_v and_o conform_v a_o convenient_a angle_n with_o the_o horizon_n and_o axis_fw-la of_o the_o earth_n this_o practice_n be_v profitable_a for_o traveller_n who_o have_v sow_a needle_n touch_v may_v prick_v they_o upon_o any_o piece_n of_o wood_n and_o place_v they_o in_o the_o water_n and_o it_o will_v set_v out_o the_o north_n and_o south_n instead_o of_o a_o compass_n but_o if_o for_o pleasure-sake_n you_o take_v another_o wire_n thrust_v through_o a_o round_a cork_n and_o let_v his_o upper_a end_n be_v touch_v at_o the_o contrary_a pole_n and_o place_v in_o the_o basin_n of_o water_n these_o two_o after_o some_o time_n will_v take_v knowledge_n of_o each_o other_o and_o will_v begin_v to_o move_v and_o stir_v and_o draw_v near_o and_o near_a together_o tab._n vi_o fig._n 5._o and_o come_v near_o will_v move_v the_o fast_o and_o sudden_o join_v together_o at_o the_o upper_a end_n on_o these_o wire_n paper-tilter_n on_o horsbacke_a may_v be_v fasten_v and_o they_o will_v run_v their_o course_n together_o upon_o cork_n in_o the_o water_n etc._n etc._n chap._n xv._o of_o application_n tab_n vii_o take_v a_o long_a magnet_n that_o have_v the_o pole_n in_o the_o midst_n tab._n vii_o fig._n 1._o as_o a_o b_o and_o the_o aequator_fw-la c_o d_o the_o needle_n place_v in_o the_o midst_n apply_v direct_o upon_o the_o axis_fw-la and_o at_o the_o end_n and_o at_o the_o other_o place_n oblique_o the_o second_o stone_n be_v a_o long_a magnet_n that_o have_v his_o pole_n a_o b_o in_o the_o end_n and_o the_o aequator_fw-la c_o d_o in_o the_o midst_n tab._n vii_o fig._n 2._o here_o the_o needle_n against_o the_o aequator_fw-la stand_v at_o right_a angle_n unto_o it_o and_o parallel_v unto_o the_o axis_fw-la but_o at_o the_o either_o end_n of_o the_o loadstone_n the_o needle_n apply_v themselves_o at_o right_a angle_n to_o the_o axis_fw-la and_o parallel_v to_o the_o aequator_fw-la and_o in_o the_o intermiddle_a space_n the_o needle_n apply_v oblique_o to_o the_o magnet_n now_o i_o will_v have_v you_o to_o provide_v two_o long_a lodestone_n that_o have_v the_o pole_n in_o the_o midst_n like_o that_o tab._n vii_o fi._n 1._o and_o before_o he_o place_n three_o magnetical_a needle_n two_o at_o the_o end_n and_o one_o against_o the_o midst_n or_o pole_n as_o in_o tab._n viii_o fig._n 1._o the_o middle_a needle_n will_v behold_v the_o pole_n and_o the_o other_o will_v apply_v oblique_o as_o before_o in_o table_n vii_o fig._n 1._o now_o bring_v near_o the_o second_o loadstone_n that_o have_v his_o pole_n in_o the_o midst_n and_o place_n b_o the_o south-pole_n towards_o the_o needle_n that_o behold_v the_o south-pole_n b_o of_o the_o first_o stone_n and_o these_o needle_n will_v between_o these_o two_o southpole_n respect_v neither_o pole_n of_o these_o two_o stone_n but_o seat_n themselves_o parallel_v to_o both_o stone_n and_o
n_z where_o n_o be_v on_o the_o equinoctial_a line_n etc._n etc._n chap._n xxxiiii_o of_o the_o application_n of_o the_o inclinatory-needle_n to_o the_o axis_fw-la of_o the_o earth_n we_o have_v show_v how_o the_o compass_n and_o directory-needle_n do_v apply_v and_o order_v themselves_o in_o the_o magnetical_a meridian_n towards_o the_o pole_n and_o of_o the_o correct_v of_o his_o err_a from_o the_o true_a meridian_n and_o pole_n be_v carry_v level_a and_o parallel_v to_o the_o horizon_n and_o seat_v in_o any_o part_n of_o the_o terrestrial_a globe_n whereby_o and_o to_o the_o end_n the_o traveller_n by_o sea_n and_o land_n may_v take_v his_o course_n certain_o to_o any_o coast_n or_o part_n of_o the_o world_n now_o it_o remain_v that_o we_o treat_v of_o the_o use_n of_o another_o needle_n call_v the_o inclinatory-needle_n which_o be_v artificial_o place_v in_o his_o ring_n be_v as_o profitable_a to_o all_o navigator_n and_o traveller_n as_o that_o former_o speak_v of_o for_o by_o this_o they_o may_v know_v the_o elevation_n of_o the_o pole_n in_o all_o part_n of_o the_o world_n without_o the_o sight_n of_o the_o celestial_a globe_n and_o light_n this_o inclinatory-needle_n fit_v in_o his_o ring_n and_o place_v in_o the_o magnetical_a meridian_n do_v apply_v &_o conform_v itself_o unto_o the_o axis_fw-la of_o the_o magnetical_a globe_n of_o the_o earth_n whereas_o the_o directory-needle_n do_v apply_v unto_o the_o meridian_n and_o pole_n and_o that_o diverse_o in_o diverse_a elevation_n of_o the_o pole_n for_o sail_v upon_o the_o equinoctial_a of_o the_o earth_n this_o inclinatory-needle_n make_v a_o paralellline_a with_o the_o axis_fw-la of_o the_o earth_n be_v upon_o the_o pole_n this_o needle_n will_v make_v one_o continue_a line_n and_o axis_fw-la with_o the_o axis_fw-la of_o the_o earth_n pass_v from_o the_o equinoctial_a to_o either_o pole_n this_o inclinatory-needle_n will_v conform_v itself_o unto_o certain_a acute_a angle_n with_o the_o axis_fw-la of_o the_o earth_n which_o increase_n from_o the_o equinoctial_a in_o largeness_n and_o prove_v less_o acute_a in_o every_o parallel_n so_o that_o the_o angle_n of_o the_o earth_n axis_fw-la and_o the_o axis_fw-la of_o the_o needle_n be_v at_o the_o great_a about_o 42_o degree_n of_o the_o pole_n elevation_n and_o the_o difference_n between_o these_o two_o will_v be_v near_o 22_o degree_n and_o a_o half_a be_v here_o at_o the_o large_a after_o it_o decrease_v continual_o towards_o the_o pole_n where_o the_o needle_n will_v stand_v direct_o upon_o the_o axis_fw-la of_o the_o earth_n now_o to_o know_v and_o find_v out_o this_o angle_n what_o it_o be_v it_o be_v necessary_a to_o learn_v what_o angle_n this_o inclinatory-needle_n make_v with_o the_o horizon_n in_o every_o latitude_n of_o the_o pole_n because_o if_o the_o elevation_n of_o the_o pole_n be_v take_v out_o of_o this_o angle_n with_o the_o horizon_n which_o be_v always_o the_o large_a unless_o it_o be_v at_o the_o equinoctial_a and_o the_o pole_n and_o have_v the_o axis_fw-la of_o the_o earth_n always_o between_o he_o and_o the_o horizon_n the_o remainder_n be_v the_o angle_n of_o this_o needle_n conformity_n with_o the_o axis_fw-la of_o the_o earth_n therefore_o we_o will_v leave_v to_o speak_v of_o the_o inclinatory-needle_n most_o natural_a and_o true_a conformity_n with_o the_o axis_fw-la of_o the_o earth_n and_o hereafter_o shall_v deliver_v by_o what_o mean_v the_o angle_n between_o the_o inclinatory-needle_n and_o the_o horizon_n may_v be_v know_v to_o the_o end_n that_o the_o elevation_n of_o the_o pole_n may_v thereby_o be_v find_v out_o chap._n xxxv_o of_o the_o inclinatory_a ring_n and_o needle_n whereas_o the_o horizon_n be_v very_o easy_o find_v out_o by_o any_o massy_a substance_n which_o natural_o will_v hang_v perpendicular_a and_o plumbe_v by_o have_v a_o level_a line_n make_v at_o right_a angle_n unto_o the_o same_o therefore_o it_o shall_v be_v convenient_a to_o place_v this_o inclinatory-needle_n in_o a_o ring_n of_o brass_n or_o silver_n so_o artificial_o that_o this_o frame_n be_v carry_v about_o the_o meridian_n of_o the_o earth_n this_o needle_n may_v make_v all_o kind_n of_o acute_a angle_n with_o the_o horizon_n in_o the_o variety_n of_o his_o inclination_n unto_o he_o as_o at_o the_o equinoctial_a this_o needle_n lie_v level_a with_o the_o horizon_n so_o at_o the_o pole_n it_o stand_v at_o right_a angle_n to_o the_o horizon_n and_o direct_v itself_o in_o one_o line_n with_o the_o axis_fw-la of_o the_o earth_n and_o pass_v from_o the_o equinoctial_a it_o do_v elevate_v itself_o above_o the_o horizon_n twice_o as_o fast_o as_o the_o pole_n do_v until_o the_o pole_n have_v about_o a_o 11_o degree_n of_o latitude_n about_o the_o horizon_n but_o after_o the_o needle_n slack_v his_o pace_n by_o little_a and_o little_a until_o he_o come_v to_o the_o pole_n where_o both_o join_v together_o without_o any_o angle_n at_o all_o in_o one_o line_n direct_o also_o this_o needle_n make_v always_o one_o kind_n of_o angle_n with_o the_o horizon_n in_o one_o parallel_n and_o altitude_n of_o the_o pole_n and_o a_o diverse_a arch_n from_o the_o same_o but_o one_o certain_a in_o one_o latitude_n as_o by_o this_o instrument_n follow_v shall_v appear_v and_o every_o where_o be_v observe_v tab_n xvii_o after_o provide_v two_o narrow_a plate_n of_o brass_n or_o silver_n to_o be_v fasten_v on_o either_o side_n of_o the_o ring_n paralelly_n to_o the_o horizon_n and_o in_o the_o midst_n of_o these_o as_o it_o be_v against_o the_o centre_n of_o the_o ring_n drill_v and_o make_v two_o little_a hole_n almost_o through_o the_o side_n of_o the_o plate_n for_o the_o short_a axis_fw-la of_o the_o inclinatory-needle_n to_o play_v and_o move_v in_o up_o and_o down_o according_a unto_o this_o kind_n of_o magnetical_a and_o inclinatory_a conformity_n last_o this_o instrument_n will_v be_v cover_v with_o two_o glass_n for_o both_o side_n to_o keep_v the_o inclinatory-needle_n from_o wind_n and_o weather_n and_o a_o care_n have_v that_o the_o instrument_n hang_v true_o perpendicular_a in_o time_n of_o use_n in_o travel_v hang_v this_o instrument_n south_n and_o north_n in_o the_o magnetical_a meridian_n and_o this_o inclinatory-needle_n will_v fall_v with_o one_o end_n under_o the_o horizon_n in_o every_o elevation_n of_o the_o pole_n and_o bear_v up_o his_o other_o end_n in_o every_o parallel_n and_o altitude_n of_o the_o pole_n to_o a_o certain_a angle_n with_o the_o horizon_n which_o may_v be_v call_v the_o inclinatory_a angle_n for_o that_o place_n which_o be_v note_v in_o the_o meridian_n of_o this_o ring_n with_o the_o degree_n he_o point_v at_o be_v to_o be_v reserve_v as_o proportionable_a to_o that_o elevation_n of_o the_o pole_n where_o the_o observation_n be_v make_v this_o matter_n be_v demonstrate_v by_o the_o round_a loadstone_n in_o every_o part_n in_o the_o xiii_o chapter_n before_o which_o be_v collect_v by_o the_o say_a demonstration_n and_o practice_n be_v to_o be_v place_v in_o their_o correspondency_n in_o a_o table_n for_o the_o altitude_n of_o the_o pole_n whereby_o in_o all_o place_n it_o may_v be_v have_v ready_o what_o will_v be_v the_o angle_n of_o the_o inclinatory-needle_n and_o what_o be_v the_o latitude_n of_o the_o pole_n cause_v only_o by_o the_o disposition_n of_o the_o magnetical_a globe_n of_o the_o earth_n and_o also_o by_o the_o diagram_n follow_v it_o be_v show_v chap._n xxxvi_o a_o diagram_n of_o the_o needle_n inclination_n to_o the_o axis_fw-la of_o the_o earth_n and_o horizon_n in_o any_o latitude_n this_o demonstration_n show_v most_o manifest_o unto_o our_o eye_n both_o what_o angle_n the_o inclinatory-needle_n make_v to_o the_o axis_fw-la of_o the_o world_n or_o earth_n in_o all_o region_n and_o also_o what_o angle_n or_o arch_n he_o point_v at_o above_o or_o under_o from_o the_o horizon_n in_o any_o latitude_n of_o the_o pole_n whatsoever_o hereby_o most_o evident_o set_v out_o the_o meaning_n of_o the_o two_o former_a chapter_n and_o of_o the_o xiii_o chapter_n before_o they_o where_o it_o be_v demonstrate_v from_o the_o stone_n itself_o that_o this_o inclinatory-needle_n will_v make_v but_o one_o circumvolution_n about_o the_o meridian_n of_o the_o earth_n as_o it_o do_v about_o the_o loadstone_n the_o diagram_n be_v this_o tabâ—_n xviii_o in_o like_a manner_n from_o the_o other_o ten_o part_n or_o 90_o degree_n in_o the_o quadrant_a b_o d_o draw_z paralell-line_n to_o the_o 〈◊〉_d a_o d_o produce_v and_o from_o every_o part_n as_o a_o centre_n extend_v the_o compass_n from_o the_o same_o to_o c_o describe_z arch_n from_o c_o to_o those_o line_n divide_v they_o into_o 90._o part_n a_o piece_n and_o take_v like_o number_n of_o part_n answer_v to_o these_o part_n in_o the_o quadrant_a c_o d_o for_o the_o axis_fw-la of_o the_o latitude_n then_o draw_v a_o obscure_a line_n from_o a_o to_o the_o same_o part_n in_o