true_a angle_n and_o that_o be_v the_o variation_n of_o the_o inclinatory-needle_n for_o that_o place_n chap._n xxxxiii_n of_o find_v the_o longitude_n here_o i_o purpose_v to_o have_v end_v this_o short_a treatise_n of_o magnetical_a matter_n but_o because_o that_o this_o thing_n be_v not_o altogether_o impertinent_a thereunto_o i_o think_v it_o not_o superfluous_a to_o annex_v this_o little_a chapter_n of_o find_v the_o longitude_n for_o although_o that_o the_o magnetical_a needle_n before_o treat_v of_o do_v not_o show_v the_o longitude_n yet_o because_o the_o true_a meridian_n and_o altitude_n of_o the_o pole_n be_v know_v by_o they_o there_o be_v much_o help_n bring_v thereby_o for_o the_o knowledge_n of_o the_o longitude_n which_o by_o a_o few_o easy_a observation_n more_o from_o the_o body_n of_o the_o moon_n will_v be_v obtain_v who_o motion_n if_o it_o shall_v be_v set_v down_o and_o order_v in_o a_o exact_a manner_n will_v require_v a_o large_a discourse_n with_o many_o rule_n and_o observation_n of_o the_o moon_n inequality_n of_o motion_n anomaly_n and_o prostapherisis_n of_o his_o excentricity_n paralaxis_fw-la with_o the_o variety_n of_o his_o latitude_n and_o nodes_fw-la which_o thing_n be_v very_o laborious_a and_o curious_a shall_v be_v here_o omit_v refer_v you_o herein_o to_o tycho_n brahe_n and_o his_o rule_n and_o only_o i_o shall_v here_o set_v down_o rule_v to_o know_v the_o place_n of_o the_o moon_n at_o a_o large_a scantling_n yet_o very_a near_o the_o truth_n though_o not_o the_o truth_n itself_o which_o peradventure_o the_o best_a study_a in_o this_o kind_n can_v very_o hardly_o do_v only_o borrow_v half_o a_o day_n motion_n at_o the_o moon_n wherein_o the_o matter_n before_o mention_v will_v not_o alter_v many_o minute_n provide_v a_o almanac_n or_o ephemerides_n for_o any_o place_n or_o port_n wherein_o the_o apparent_a place_n of_o the_o moon_n in_o the_o zodiac_n be_v exact_o set_v down_o in_o degree_n and_o minute_n for_o the_o noon_n of_o every_o day_n especial_o of_o the_o day_n of_o observe_v then_o take_v the_o difference_n of_o the_o moon_n motion_n from_o the_o day_n before_o and_o reduce_v it_o into_o minute_n devide_v they_o by_o 24_o hour_n the_o quotient_n will_v show_v what_o minute_n the_o moon_n move_v in_o a_o hour_n now_o take_v the_o altitude_n of_o the_o moon_n at_o any_o time_n of_o the_o day_n or_o night_n by_o the_o jacobs_n staff_n or_o a_o quadrant_a then_o observe_v the_o azimuth_n of_o the_o moon_n by_o shadow_n as_o before_o for_o the_o sun_n or_o by_o a_o ruler_n with_o sight_n which_o if_o it_o do_v differ_v any_o hour_n from_o the_o meridian_n alow_o the_o part_n due_a of_o the_o moon_n motion_n then_o seek_v in_o the_o râ—te_n of_o the_o mathematical_a jewel_n or_o universal_a astrolabe_n where_o the_o azimuth_n and_o almicantaraph_n of_o the_o moon_n new_o observe_v cut_v each_o other_o set_v the_o horizon_n to_o the_o altitude_n of_o the_o pole_n and_o look_v what_o parallel_n do_v cut_v these_o two_o and_o follow_v the_o same_o unto_o the_o ecliptic_a line_n or_o do_v 〈◊〉_d like_v of_o the_o moon_n latitude_n in_o that_o sign_n degree_n and_o minute_n of_o the_o zodiac_n the_o moon_n be_v in_o at_o that_o instant_n these_o degree_n few_o or_o more_o than_o those_o of_o the_o radical_a and_o fix_a meridian_n for_o which_o the_o ephemerides_n be_v make_v do_v show_v what_o hour_n and_o part_n be_v to_o be_v add_v if_o the_o observation_n be_v towards_o the_o west_n or_o substract_v if_o in_o the_o east_n to_o this_o meridian_n it_o be_v to_o be_v note_v that_o every_o hour_n contain_v 15_o degree_n of_o the_o equinoctial_a and_o thus_o the_o longitude_n of_o that_o place_n you_o be_v in_o will_v be_v attain_v which_o you_o desire_v but_o to_o find_v the_o longitude_n of_o any_o place_n you_o go_v to_o from_o the_o place_n you_o pass_v from_o by_o these_o magneticall-needle_n only_o it_o will_v be_v necessary_a to_o prick_v your_o card_n as_o well_o by_o the_o degree_n of_o latitude_n of_o the_o pole_n correspondent_a to_o the_o angle_n of_o the_o inclinatory-needle_n as_o by_o the_o way_n the_o ship_n make_v upon_o the_o point_n of_o the_o directory_n compass_n and_o therefore_o it_o will_v be_v fit_a to_o have_v both_o these_o needle_n place_v together_o as_o in_o the_o type_n of_o the_o xl._n chapter_n and_o pendent_a before_o the_o mariner_n at_o the_o helm_n with_o the_o compass_n and_o travers-boord_n for_o they_o both_o now_o for_o this_o purpose_n i_o will_v have_v another_o travers_n ruler_n or_o limb_n for_o the_o quadrant_a of_o the_o inclinatoryring_n place_v before_o he_o as_o it_o be_v describe_v in_o the_o page_n follow_v where_o there_o be_v only_o 30_o degree_n divide_v upon_o the_o same_o which_o be_v twice_o more_o repeat_v will_v make_v up_o 90_o degree_n every_o degree_n have_v 6_o holâ—â—_n for_o peg_n to_o be_v put_v into_o they_o for_o the_o number_n of_o 10_o minute_n apiece_o and_o on_o the_o first_o column_n on_o the_o left_a hand_n there_o be_v 4_o hole_n make_v to_o receive_v peg_n according_a to_o the_o number_n of_o hour_n you_o sail_v on_o such_o a_o degree_n and_o minute_n point_v in_o the_o inclinatoryring_n if_o any_o error_n shall_v chance_v to_o fall_v out_o by_o any_o variation_n of_o either_o needle_n then_o at_o any_o time_n when_o the_o sun_n do_v shine_v they_o may_v be_v amend_v by_o the_o precept_n already_o large_o deliver_v in_o that_o case_n of_o either_o both_o in_o many_o chapter_n of_o this_o book_n and_o in_o the_o last_o precedent_n chapter_n chap._n xxxxiiii_n of_o the_o matter_n of_o the_o magnetical_a globe_n of_o the_o earth_n by_o the_o needle_n at_o length_n we_o have_v bring_v our_o short_a treatise_n magnetical_a principal_o &_o most_o profitable_o to_o declare_v the_o nature_n of_o the_o directory_n and_o inclinatory-needle_n both_o towards_o the_o terrella_n and_o semiterrella_n and_o towards_o the_o magnetical_a globe_n of_o the_o earth_n and_o how_o the_o proportion_n and_o similitude_n of_o their_o application_n and_o conformity_n to_o both_o be_v alike_o and_o the_o same_o only_o the_o magneticall-needle_n be_v of_o a_o saeminine_a and_o sequent_a substance_n as_o have_v be_v demonstrate_v in_o the_o viii_o xxi_o and_o xxii_o chapter_n do_v behold_v the_o round_a magnet_n and_o the_o round_a iron_n with_o that_o point_n that_o be_v of_o the_o same_o nature_n and_o demonstration_n that_o the_o pole_n be_v which_o he_o follow_v and_o affect_v contrary_a to_o the_o nature_n magnetical_a that_o be_v in_o the_o adamant_n themselves_o one_o towards_o the_o other_o or_o of_o the_o needle_n one_o towards_o the_o other_o but_o this_o magneticall-needle_n be_v free_v from_o the_o magnetical_a orb_n of_o the_o loadstone_n and_o iron_n will_v have_v that_o point_n of_o the_o needle_n that_o follow_v they_o direct_v by_o the_o virtue_n magnetical_a of_o the_o earth_n into_o a_o contrary_a province_n of_o polar_n pre-eminence_n for_o the_o magneticall-needle_n do_v conform_v itself_o unto_o the_o earth_n in_o the_o same_o fashion_n that_o the_o adamant_n and_o loadstone_n itself_o do_v neither_o be_v it_o so_o serviceable_a unto_o the_o magnetical_a globe_n of_o the_o earth_n as_o he_o be_v unto_o the_o magnet_n and_o iron_n but_o be_v of_o a_o fellowlike_o species_n with_o the_o earth_n as_o well_o as_o the_o adamant_n themselves_o be_v whereby_o i_o do_v gather_v that_o the_o matter_n of_o the_o interior_a part_n of_o the_o magnetical_a globe_n of_o the_o earth_n be_v not_o the_o same_o with_o these_o we_o know_v of_o the_o loadstone_n and_o iron_n into_o who_o bowel_n never_o any_o man_n by_o the_o deep_a mine_n or_o other_o passage_n of_o fissur_n and_o cavity_n make_v by_o great_a earthquake_n ever_o yet_o descend_v to_o show_v unto_o we_o any_o part_n of_o the_o earth_n interior_a substance_n magnetical_a and_o though_o i_o take_v the_o matter_n of_o the_o bowel_n of_o the_o earth_n to_o be_v magnetical_a yet_o the_o application_n of_o this_o magneticall-needle_n demonstrate_v that_o the_o magnetical_a globe_n of_o the_o earth_n inward_a substance_n consist_v neither_o of_o solid_a load_n stone_n nor_o of_o ironlike_a mine_n or_o clay_n or_o such_o like_a material_n as_o they_o which_o have_v think_v themselves_o most_o skilful_a in_o magnetical_a philosophy_n have_v imagine_v for_o if_o the_o magnetical_a globe_n of_o the_o earth_n be_v of_o any_o ironlike_a substance_n than_o that_o point_n of_o the_o needle_n that_o affect_v a_o polar_n jurisdiction_n place_v near_o the_o loadstone_n and_o the_o iron_n will_v also_o be_v apply_v unto_o the_o earth_n behold_v the_o same_o province_n and_o jurisdiction_n polar_n be_v direct_v by_o the_o vigour_n of_o the_o earth_n magnetical_a orb_n of_o like_a nature_n but_o this_o be_v not_o so_o as_o all_o confess_v and_o may_v prove_v therefore_o i_o hold_v that_o the_o great_a magnetical_a globe_n of_o the_o earth_n consist_v of_o a_o magnetical_a substance_n unknown_a unto_o we_o as_o also_o the_o body_n of_o the_o magnetical_a globe_n of_o the_o moon_n and_o of_o the_o rest_n do_v and_o so_o conclude_v that_o the_o work_n of_o god_n be_v most_o wonderful_a and_o altogether_o past_o find_v out_o but_o here_o before_o i_o end_v i_o be_o to_o satisfy_v that_o i_o make_v promise_n of_o in_o the_o xii_o chapter_n that_o i_o will_v show_v my_o conceit_n of_o the_o reason_n why_o the_o needle_n in_o his_o passage_n from_o the_o aequator_fw-la of_o the_o magnet_n by_o the_o pole_n to_o the_o aequator_fw-la again_o shall_v make_v the_o circumvolution_n of_o a_o whole_a circle_n in_o turn_v about_o his_o foot_n have_v pass_v a_o semicircle_n of_o the_o terrella_n or_o semiterrella_n and_o will_v make_v another_o whole_a circle_n about_o the_o other_o semicircle_n of_o contrary_a nature_n with_o his_o other_o point_n for_o to_o clear_v this_o with_o the_o nature_n of_o the_o two_o province_n which_o be_v adverse_a one_o unto_o the_o other_o i_o will_v wish_v that_o you_o will_v conceive_v and_o propound_v two_o globe_n of_o magnetical_a nature_n and_o substance_n as_o tender_a as_o clay_n the_o one_o of_o they_o to_o be_v animate_v with_o the_o north_n and_o arctic_a virtue_n at_o both_o pole_n as_o tab._n xx._n fig._n 3._o aa_o to_o turn_v to_o the_o north_n only_o and_o the_o other_o globe_n with_o his_o pole_n tab._n xx._n fig._n 3._o bb_n to_o be_v endow_v with_o the_o antarctic_a power_n to_o move_v to_o the_o south_n only_o now_o if_o the_o globe_n of_o the_o earth_n or_o of_o the_o magnet-stone_n be_v make_v only_o of_o one_o of_o these_o globe_n than_o there_o will_v be_v a_o strife_n between_o the_o pole_n of_o one_o of_o the_o globe_n which_o shall_v behold_v his_o peculiar_a point_n as_o if_o the_o pole_n a_o of_o the_o north_n virtue_n shall_v behold_v the_o north_n the_o other_o pole_n a_o of_o the_o same_o globe_n be_v of_o arctic_a nature_n will_v also_o strive_v to_o behold_v the_o north_n or_o at_o least_o in_o their_o equality_n of_o power_n will_v rather_o respect_v east_n and_o west_n so_o that_o there_o will_v be_v no_o stability_n by_o the_o pole_n of_o such_o kind_n of_o globe_n therefore_o the_o skilful_a potter_n who_o make_v the_o earth_n tam_fw-la robur_n tam_fw-la robor_fw-la ni-colis_fw-la arbor_fw-la jovis_fw-la 1610_o n_n o_fw-fr london_n print_v by_o nicholas_n okes_n dwell_v near_o holborne-bridge_n at_o the_o sign_n of_o the_o hand_n 1613._o
angle_n unto_o the_o same_o this_o carry_v a_o axis_fw-la which_o be_v move_v about_o be_v stay_v by_o the_o nether_a end_n of_o the_o movable_a meridians_fw-la index_n descend_v into_o a_o nick_n in_o it_o to_o hold_v it_o at_o right_a angle_n with_o the_o aequinoctiall-circle_n in_o manner_n of_o a_o sphere_n and_o hold_v the_o say_a circle_n at_o right_a angle_n with_o the_o meridian_n within_o this_o four_o ring_n who_o axis_fw-la be_v stay_v by_o the_o index_n from_o either_o side_n of_o the_o equinoctial_a have_v the_o centre_n in_o the_o equinoctial_a at_o the_o side_n of_o the_o ring_n there_o be_v describe_v above_o it_o and_o below_o it_o the_o great_a declination_n of_o the_o sun_n and_o the_o arch_n between_o the_o same_o and_o the_o equinoctial_a be_v divide_v into_o such_o part_n for_o the_o begin_n of_o the_o twelve_o sign_n as_o the_o plate_n before_o be_v in_o the_o former_a chapter_n add_v the_o character_n of_o the_o twelve_o sign_n as_o it_o be_v there_o do_v then_o at_o the_o side_n of_o this_o ring_n in_o the_o equinoctial_a where_o the_o centre_n of_o the_o foresaid_a declination_n be_v take_v fasten_v the_o head_n of_o a_o pin_n of_o brass_n and_o from_o it_o behold_v the_o sign_n &_o place_n on_o the_o other_o side_n that_o the_o sun_n be_v in_o that_o day_n and_o between_o the_o eye_n and_o that_o place_n in_o this_o line_n place_v the_o bead_n upon_o the_o axis_fw-la and_o so_o fix_v it_o now_o have_v this_o instrument_n thus_o prepare_v set_v the_o index_n of_o the_o movable_a meridian_n unto_o the_o altitude_n of_o the_o pole_n and_o move_v the_o equinoctial_a circle_n and_o the_o colure-circle_n or_o different_a of_o the_o sign_n and_o fasten_v it_o firm_a at_o the_o low_a end_n of_o the_o index_n hold_v the_o instrument_n by_o the_o ring_n or_o handle_v like_o a_o sphere_n perpendicular_o and_o turn_v it_o too_o and_o fro_o till_o the_o shadow_n of_o the_o bead_n light_n upon_o the_o middle_a line_n of_o the_o aequinoctiallring_n thus_o the_o meridian_n of_o this_o instrument_n stand_v upon_o the_o true_a meridian_n the_o shadow_n of_o the_o bead_n show_v the_o hour_n and_o his_o part_n of_o the_o day_n &_o the_o needle_n in_o the_o box_n point_v out_o the_o variation_n of_o the_o compass_n in_o the_o limb_n of_o the_o horizontall_a circle_n these_o ring_n at_o pleasure_n may_v be_v fold_v one_o with_o in_o the_o other_o for_o conveniency_n of_o carriage_n and_o in_o time_n of_o use_n set_v abroad_o like_o a_o sphere_n any_o universal_a or_o astronomer_n ring_v will_v be_v of_o especial_a use_n for_o the_o find_n of_o the_o true_a meridian_n as_o well_o as_o these_o and_o have_v the_o needle_n add_v unto_o they_o the_o variation_n of_o the_o compass_n will_v be_v find_v chap._n xxxii_o of_o find_v the_o variation_n of_o the_o compass_n by_o a_o horizontall_a dial_n when_o i_o be_v a_o young_a student_n in_o the_o university_n and_o delight_v in_o make_v of_o dial_n i_o be_v always_o wont_a to_o place_v the_o line_n of_o the_o twelve_o sign_n in_o they_o that_o when_o i_o set_v any_o body_n of_o dial_n in_o the_o sun_n upon_o a_o level_a foot_n i_o always_o direct_v they_o by_o the_o shadow_n of_o the_o sun_n upon_o his_o sign_n and_o part_n into_o the_o true_a meridian_n and_o south_n and_o have_v a_o large_a horizontall_a dial_n for_o any_o region_n with_o the_o line_n of_o the_o twelve_o sign_n describe_v in_o it_o place_v the_o same_o upon_o a_o level_a platform_n and_o turn_v it_o until_o the_o nick_n of_o the_o shadow_n of_o the_o stile_n light_n upon_o the_o place_n and_o sign_n that_o the_o sun_n be_v in_o for_o that_o day_n then_o fix_v a_o compass_n or_o needle_n with_o his_o meridan_n parallel_v to_o the_o meridian_n of_o the_o dial_n the_o needle_n will_v show_v in_o the_o limb_n of_o the_o horizontall_a circle_n the_o variation_n of_o the_o compass_n and_o the_o dial_n show_v the_o hour_n and_o his_o part_n of_o the_o day_n this_o dial_n may_v be_v make_v universal_a as_o well_o as_o the_o equinoctial_a if_o that_o in_o travel_v north_n the_o north_n side_n be_v elevate_v by_o mean_n of_o a_o quadrant_a that_o the_o plain_a of_o the_o dial_n may_v always_o have_v the_o pole_n of_o the_o dial_n erect_v above_o he_o to_o that_o latitude_n for_o which_o it_o be_v describe_v and_o in_o pass_v southerly_a the_o southside_n of_o the_o dial_n will_v be_v situate_v by_o the_o quadrant_a to_o his_o proper_a elevation_n and_o if_o that_o the_o azimuth_n and_o almicantars_n be_v put_v into_o this_o dial_n than_o the_o azimuth_n and_o altitude_n of_o the_o sun_n with_o the_o place_n of_o the_o sun_n and_o hour_n will_v be_v present_o show_v by_o the_o shadow_n of_o the_o stile_n so_o that_o for_o these_o purpose_n this_o horizontall_a dial_n will_v be_v make_v universal_a as_o a_o general_a astrolabe_n or_o astronomical_a ring_n chap._n xxxiii_o of_o find_v the_o variation_n in_o degree_n and_o minute_n by_o the_o doctrine_n of_o triangle_n whereas_o many_o may_v be_v desirous_a to_o know_v precise_o the_o degree_n &_o minute_n of_o the_o variation_n of_o the_o compass_n for_o to_o satisfy_v these_o man_n appetite_n it_o be_v very_o convenient_a to_o understand_v the_o doctrine_n of_o triangle_n for_o by_o the_o table_n of_o sin_n secant_v and_o tangent_n with_o the_o axiom_n and_o consequent_n &_o the_o golden_a rule_n this_o matter_n will_v be_v attain_v unto_o and_o therefore_o for_o this_o purpose_n i_o will_v advise_v you_o to_o observe_v and_o mark_v the_o frame_n of_o the_o analemmaset_n set_v down_o before_o in_o the_o xxviii_o chapter_n table_n xv._o fig._n 1._o with_o the_o obscure_a line_n prick_v therein_o first_o in_o this_o analemma_n let_v g_o c_o equal_a to_o a_o f_o be_v the_o elevation_n of_o the_o equinoctial_a line_n consist_v of_o 38_o and_o a_o half_a which_o be_v call_v to_o c_o l_o 30._o the_o sun_n altitude_n at_o the_o instance_n of_o observation_n for_o that_o day_n and_o the_o some_o of_o these_o will_v be_v 68_o ½_n who_o sine_fw-la be_v the_o obscure_a prick_v line_n l_o p_o now_o take_v a_o k_o 30._o degree_n be_v the_o sun_n altitude_n out_o of_o a_o f_o the_o equinoctial_a altitude_n 38._o ½_n there_o rest_v k_o f_o 8_o 1_o â—_o who_o sine_fw-la be_v the_o obscure_a line_n prick_v q_o k_o which_o add_v to_o l_o p._n produce_v make_n l_o p_o s_o 77._o divide_v s_n l_o into_o two_o equal_a part_n end_v in_o it_o and_o take_v from_o s_o t_o be_v 38_o ½_n the_o sine_fw-la of_o the_o sun_n altitude_n k_o q_o 8_o â—_o and_o take_v also_o out_o h_o r_o be_v 10_o the_o sign_n of_o the_o sun_n declination_n and_o there_o will_v remain_v it_o v._o be_v 20_o then_o join_v it_o and_o m_o together_o in_o a_o obscure_a prick_v line_n and_o make_v a_o line_n at_o right_a angle_n to_o this_o from_o m_o to_o x_o be_v 20_o and_o be_v equal_a unto_o it_o five_o so_o have_v you_o this_o demonstration_n and_o if_o you_o look_v into_o the_o table_n of_o sin_n for_o the_o number_n you_o shall_v find_v they_o set_v down_o in_o their_o place_n and_o as_o the_o sine_z of_o t_o l_o be_v unto_o the_o sine_fw-la of_o l_o m_o so_o be_v the_o fine_a of_o x_o m_o unto_o the_o sine_fw-la m_o n._n so_o that_o the_o angle_n m_o b_o k_o in_o the_o analemma_n be_v the_o complement_n of_o the_o angle_n m_o b_o n_o will_v be_v the_o azimuth_n you_o seek_v for_o and_o it_o be_v equal_a to_o the_o angle_n o_o m_o d_o in_o the_o say_a type_n which_o compare_v with_o the_o magnetical_a azimuth_n the_o difference_n between_o they_o show_v what_o the_o variation_n be_v from_o the_o true_a meridian_n second_o it_o be_v to_o be_v note_v that_o if_o this_o observation_n or_o take_v of_o the_o sun_n altitude_n be_v before_o 6_o a_o clock_n in_o the_o morning_n or_o after_o at_o night_n when_o the_o sun_n be_v in_o the_o north_n parallel_v that_o n_o the_o intersection_n of_o the_o sun_n altitude_n and_o parallel_n of_o the_o sun_n declination_n be_v on_o the_o same_o side_n of_o the_o analemma_n that_o it_o be_v on_o then_o take_v h_o r_o the_o sine_fw-la of_o the_o sun_n declination_n out_o of_o l_o t_o and_o there_o will_v rest_v t_o v_n join_v it_o and_o m_o together_o and_o make_v a_o small_a line_n at_o right_a angle_n from_o n_z to_o x_o equal_a to_o it_o v._o for_o as_o t_o l_o be_v to_z k_o m_o so_o be_v x_o n_z unto_o n_z m_o etc._n etc._n three_o and_o last_o if_o observation_n be_v make_v when_o the_o sun_n be_v in_o the_o equinoctial_a then_o make_v the_o small_a line_n m_o x_o equal_a to_o p_o t_o and_o look_v what_o proportion_n it_o l_o have_v unto_o l_o m_o the_o same_o have_v x_o m_o to_o m_z
to_o be_v declare_v also_o a_o long_a wire_n thrust_v through_o a_o cork_n fig._n 21._o serve_v for_o magnetical_a use_n in_o the_o water_n these_o form_n of_o iron_n with_o other_o that_o the_o ingenious_a will_n easy_o invent_v and_o make_v be_v very_o fit_a for_o magnetical_a demonstration_n as_o well_o as_o the_o variety_n of_o magnet_n stone_n be_v chap._n four_o of_o the_o earth_n this_o great_a globe_n of_o the_o earth_n whereon_o we_o move_v and_o travel_n be_v find_v to_o be_v a_o magnetical_a body_n by_o such_o as_o have_v travel_v and_o sail_v round_o about_o she_o as_o sir_n francis_n drake_n do_v and_o m._n candish_n who_o magnetical_a compass_n be_v always_o direct_v magnetical_o that_o be_v the_o lily_n of_o their_o compass_n be_v turn_v always_o towards_o the_o north-pole_n in_o all_o place_n wheresoever_o they_o sail_v by_o the_o virtue_n magnetical_a and_o disponent_fw-la faeulty_n of_o the_o magnetical_a globe_n of_o the_o earth_n as_o it_o be_v demonstrate_v in_o the_o xxv_o chapter_n of_o this_o book_n also_o by_o such_o as_o have_v make_v their_o course_n northerly_a and_o southerly_a it_o have_v be_v observe_v that_o the_o magnetical_a inclinatory-needle_n do_v in_o every_o elevation_n of_o the_o pole_n conform_v and_o apply_v itself_o or_o rather_o be_v conform_v and_o dispone_v unto_o the_o axis_fw-la of_o the_o earth_n according_a unto_o certain_a correspondent_a angle_n to_o the_o latitude_n as_o it_o be_v demonstrate_v in_o the_o xii_o xiii_o xxxv_o &_o xxxvi_o chapter_n of_o this_o book_n whereby_o it_o be_v demonstrative_o to_o be_v conclude_v that_o the_o earth_n be_v a_o magnetical_a body_n direct_v both_o herself_o and_o the_o other_o two_o magnetical_a body_n into_o the_o north_n and_o south_n by_o the_o virtue_n of_o her_o meridian_n circle_n and_o part_n as_o be_v demonstrate_v in_o the_o ix_o chap._n and_o other_o moreover_o the_o earth_n have_v natural_o two_o magnetical_a pole_n unto_o the_o which_o these_o meridional_a part_n do_v direct_v bend_v &_o force_n not_o only_o magnetical_a body_n near_o the_o earth_n but_o also_o her_o own_o mighty_a and_o massy_a situation_n stability_n and_o firmness_n and_o feat_v herself_o so_o strong_o upon_o she_o two_o pole_n by_o her_o natural_a and_o magnetical_a vigour_n pass_v from_o her_o meridional_a part_n to_o the_o pole_n as_o if_o she_o be_v tie_v by_o many_o mighty_a strong_a cable_n unto_o two_o most_o firm_a pillar_n far_o strong_a than_o any_o hercules_n pillar_n not_o to_o be_v remove_v by_o any_o force_n from_o her_o natural_a position_n which_o thing_n if_o it_o may_v chance_v that_o it_o shall_v come_v to_o pass_v yet_o certain_o she_o will_v return_v again_o unto_o her_o former_a firm_a seat_n and_o place_n as_o all_o magnetical_a body_n and_o directory_n needle_n do_v as_o be_v demonstrate_v hereafter_o thus_o we_o prove_v that_o the_o earth_n be_v place_v and_o firm_v by_o her_o magnetical_a virtue_n and_o not_o by_o her_o gravity_n and_o weight_n though_o that_o the_o part_n of_o the_o earth_n do_v conjoin_v and_o adhere_v together_o by_o their_o gravity_n move_v to_o their_o centre_n but_o the_o magnetical_a nature_n move_v conform_v and_o firm_o seat_v itself_o to_o the_o pole_n and_o axis_n now_o for_o that_o the_o pole_n of_o the_o earth_n do_v always_o by_o their_o natural_a virtue_n hold_v the_o earth_n north_n and_o south_n in_o one_o certain_a and_o uniform_a situation_n elevation_n and_o place_n there_o be_v no_o doubt_n but_o that_o the_o whole_a globe_n of_o the_o earth_n inward_o store_v with_o many_o material_n and_o rich_a mineral_n &_o outward_o adomed_a with_o many_o tree_n and_o excrescence_n all_o for_o the_o use_n of_o man_n with_o live_a creature_n innumerable_a as_o also_o in_o reason_n it_o be_v a_o unfallible_a certainty_n that_o the_o earth_n have_v at_o her_o first_o creation_n bestow_v upon_o she_o a_o globous_a and_o star-like_a vigour_n or_o intelligence_n whereby_o she_o may_v have_v her_o whole_a part_n unite_v together_o by_o the_o virtue_n of_o gravity_n unto_o the_o centre_n and_o her_o place_n make_v sure_a magnetical_o by_o her_o pole_n unmoveable_a yet_o move_v natural_o keep_v her_o place_n circular_o &_o diurnal_o out_o of_o the_o west_n into_o the_o east_n to_o the_o end_n that_o all_o creature_n shall_v receive_v the_o comfortable_a and_o lively_a beam_n of_o the_o sun_n and_o the_o influence_n of_o the_o rest_n of_o the_o planet_n and_o star_n this_o motion_n many_o learned_a man_n have_v attribute_v unto_o the_o earth_n for_o the_o benefit_n of_o calculate_v the_o motion_n of_o the_o planet_n the_o better_a which_o natural_o she_o have_v in_o herself_o for_o even_o as_o it_o be_v needless_a for_o a_o wheel_n to_o have_v her_o nave_n spoke_n and_o rimme_a about_o she_o if_o it_o shall_v not_o be_v use_v to_o turn_v about_o so_o it_o be_v to_o no_o purpose_n that_o the_o earth_n shall_v natural_o have_v a_o globous_a body_n two_o pole_n a_o axis_fw-la meridians_fw-la and_o aequator_fw-la as_o shall_v be_v demonstrate_v hereafter_o part_n fit_a for_o circular_a motion_n and_o not_o for_o to_o turn_v she_o aequator_fw-la and_o parallel_v about_o as_o the_o wheel_n do_v although_o these_o argument_n will_v hardly_o persuade_v we_o to_o believe_v the_o earth_n motion_n yet_o because_o that_o it_o be_v late_o observe_v unto_o our_o sense_n by_o help_n of_o the_o trunckespectakle_n both_o by_o galileus_n and_o kepler_n famous_a mathematician_n that_o the_o great_a body_n of_o the_o globe_n of_o jupiter_n be_v twelve_o time_n great_a than_o the_o earth_n do_v turn_v about_o in_o less_o time_n than_o a_o day_n upon_o his_o axis_fw-la and_o pole_n who_o also_o have_v observe_v four_o moon_n attendant_a on_o jupiter_n which_o move_v round_o about_o he_o the_o slow_a in_o 14_o day_n the_o next_o in_o seven_o day_n and_o the_o rest_n in_o short_a time_n so_o likewise_o john_n fabricius_n have_v observe_v that_o the_o great_a globe_n of_o the_o sun_n have_v three_o great_a spot_n like_o continent_n in_o he_o and_o be_v sixty_o time_n great_a than_o the_o earth_n to_o move_v about_o his_o axis_fw-la and_o pole_n near_o the_o time_n of_o ten_o day_n or_o there_o about_o so_o galileus_n and_o kepler_n have_v see_v the_o planet_n of_o venus_n to_o move_v about_o the_o sun_n in_o ten_o month_n and_o to_o have_v her_o light_n from_o the_o sun_n in_o this_o time_n increase_v and_o diminish_v upon_o her_o body_n as_o we_o see_v the_o moon_n here_o near_o unto_o we_o to_o have_v therefore_o it_o be_v certain_a by_o observation_n that_o the_o globe_n of_o jupiter_n and_o the_o sun_n do_v turn_v about_o their_o axis_fw-la and_o pole_n who_o material_n we_o know_v not_o we_o need_v not_o doubt_v that_o the_o earth_n shall_v have_v a_o circular_a motion_n for_o her_o great_a good_a but_o how_o the_o earth_n do_v turn_v circular_o we_o can_v well_o see_v it_o with_o the_o sense_n of_o our_o eye_n unless_o we_o have_v they_o place_v in_o another_o globous_a body_n and_o star_n as_o if_o they_o be_v in_o the_o moon_n where_o we_o may_v see_v the_o spot_n of_o the_o earth_n to_o turn_v about_o as_o well_o as_o now_o we_o see_v the_o spot_n in_o the_o sun_n and_o jupiter_n to_o move_v circular_o in_o their_o place_n and_o as_o contrariwise_o our_o eye_n here_o on_o the_o earth_n do_v see_v that_o the_o moon_n do_v not_o turn_v about_o by_o the_o place_n of_o her_o spot_n always_o in_o one_o fashion_n unto_o we_o for_o we_o may_v observe_v with_o our_o eye_n that_o the_o moon_n have_v pole_n of_o a_o kind_n of_o magnetical_a nature_n which_o do_v always_o hold_v she_o to_o behold_v the_o centre_n of_o the_o earth_n and_o so_o stay_v and_o conform_v she_o that_o howsoever_o she_o move_v high_a or_o low_o or_o wheresoever_o she_o be_v yet_o always_o the_o spot_n of_o half_a her_o globe_n be_v alike_o apparent_a unto_o our_o eye_n and_o conform_v she_o to_o behold_v the_o centre_n of_o the_o earth_n with_o one_o pole_n neither_o do_v the_o moon_n turn_v about_o her_o body_n upon_o two_o pole_n as_o the_o earth_n do_v upon_o she_o but_o be_v keep_v firm_a and_o unmoveable_a from_o circular_a motion_n about_o her_o axis_fw-la by_o other_o two_o pole_n that_o be_v upon_o the_o edge_n and_o aequator_fw-la of_o her_o body_n because_o her_o spot_n be_v always_o alike_o on_o her_o east_n and_o west_n side_n that_o hold_v she_o firm_o &_o stiff_o that_o she_o can_v by_o no_o mean_n turn_v about_o upon_o her_o first_o two_o pole_n for_o it_o be_v the_o virtue_n polar_n and_o magnetical_a that_o hold_v all_o globe_n in_o their_o position_n whatsoever_o beside_o the_o moon_n have_v another_o virtue_n give_v she_o at_o her_o first_o creation_n whereby_o behold_v always_o the_o centre_n of_o the_o earth_n and_o move_v near_o and_o further_o from_o the_o earth_n as_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