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end_n line_n point_n require_v 1,303 5 9.1027 5 false
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A59151 The sea-gunner shewing the practical part of gunnery as it is used at sea : and, as an introduction thereto, there is exhibited two compendiums, one of vulgar, the other of decimal arithmetick, with necessary tables relating to that art : to which is added an appendix, shewing the use of a proportional scale gunnery, and the use off the sea-gunners rule ... / composed by John Seller, Senior. Seller, John, fl. 1658-1698. 1691 (1691) Wing S2487; ESTC R16510 62,819 273

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the_o sea_n gunner_n publish_v by_o john_n seller_n a_o cascable_a deck_n b_o base_a ring_n c_o touchole_n d_o the_o chamber_n e_o reinfourd_n ring_n f_o trunions_n g_o cornish_n ring_n h_o trunion_n ring_n the_o sea-gunner_n show_v the_o practical_a part_n of_o gunnery_n as_o it_o be_v use_v at_o sea._n and_o as_o a_o introduction_n thereto_o there_o be_v exhibit_v two_o compendium_n one_o of_o vulgar_a the_o other_o of_o decimal_a arithmetic_n with_o necessary_a table_n relate_v to_o that_o art_n to_o which_o be_v add_v a_o appendix_n show_v the_o use_n of_o a_o proportional_a scale_n for_o the_o ready_a work_n of_o any_o question_n in_o gunnery_n and_o the_o use_v of_o the_o sea-gunner_n rule_n of_o a_o excellent_a contrivance_n contain_v a_o epitome_n of_o the_o art_n of_o gunnery_n in_o itself_o compose_v by_o 〈◊〉_d s●●●●r_n senior_fw-la london_n print_v by_o h._n clerk_n for_o the_o author_n and_o be_v to_o sell_v by_o he_o at_o the_o hermitage_n in_o wapping_n 1691._o the_o preface_n to_o the_o reader_n courteous_a reader_n have_v observe_v for_o several_a year_n that_o there_o have_v be_v a_o great_a want_n of_o a_o piece_n of_o sea-gunnery_a that_o have_v be_v principal_o adapt_v for_o sea-service_n in_o a_o treatise_n by_o itself_o for_o those_o book_n that_o be_v extant_a be_v chief_o intend_v for_o land_n service_n and_o at_o this_o time_n most_o of_o they_o be_v out_o of_o print_n i_o judge_v this_o a_o fit_a opportunity_n for_o the_o publish_n this_o small_a treatise_n hope_v it_o will_v be_v grateful_o accept_v by_o our_o sea-gunner_n and_o in_o regard_n that_o those_o who_o will_v be_v student_n in_o that_o art_n ought_v in_o some_o competent_a measure_n to_o be_v acquaint_v with_o arithmetic_n for_o the_o sake_n of_o such_o i_o have_v exhibit_v two_o compendium_n thereof_o one_o in_o vulgar_a and_o the_o other_o in_o decimal_a arithmetic_n as_o a_o necessary_a preparation_n for_o the_o work_a those_o question_n that_o be_v incident_a to_o that_o art_n and_o for_o the_o ease_n of_o such_o as_o be_v not_o full_o acquaint_v therewith_o i_o have_v furnish_v they_o with_o a_o proportional_a scale_n whereby_o they_o may_v perform_v all_o the_o operation_n that_o be_v useful_a in_o gunnery_n as_o also_o to_o extract_v the_o square_a and_o cube-root_n and_o how_o to_o perform_v the_o same_o by_o logarithm_n and_o by_o gunter's-scale_n to_o which_o i_o have_v add_v several_a necessary_a table_n useful_a in_o gunnery_n with_o proper_a question_n and_o their_o answer_n and_o useful_a observation_n and_o instruction_n and_o for_o the_o better_a accomplish_v the_o design_n of_o this_o book_n i_o have_v consult_v with_o the_o best_a approve_a author_n that_o have_v write_v on_o this_o subject_a also_o at_o the_o end_n of_o this_o treatise_n i_o have_v present_v you_o with_o a_o small_a tract_n as_o a_o appendix_n particular_o of_o the_o use_n of_o the_o proportional_a scale_n and_o of_o the_o use_n of_o a_o rule_n of_o a_o new_a contrivance_n fit_a for_o the_o pocket_n that_o have_v upon_o it_o a_o epitome_n of_o the_o practical_a part_n of_o gunnery_n in_o itself_o which_o i_o call_v the_o sea-gunner_n rule_n all_o which_o i_o submit_v to_o the_o favourable_a construction_n of_o the_o judicious_a and_o rest_v your_o friend_n to_o serve_v you_o john_n seller_n a_o table_n of_o the_o principal_a matter_n contain_v in_o this_o book_n chap._n i._o of_o vulgar_a arithmetic_n page_z 1_o of_o notation_n of_o number_n ibid._n numeration_n and_o addition_n 3_o subtraction_n 5_o multiplication_n 7_o division_n 15_o the_o rule_n of_o three_o direct_v 19_o the_o rule_n of_o three_o reverse_n 22_o double_a rule_n of_o three_o 23_o chap._n ii_o of_o decimal_a arithmetic_n 28_o notation_n of_o fraction_n ibid._n addition_n of_o decimal_n 33_o subtraction_n of_o decimal_n 34_o multiplication_n of_o decimal_n 35_o division_n of_o decimal_n 37_o a_o decimal_n table_n of_o penny_n and_o farthing_n 46_o a_o table_n of_o decimal_n of_o one_o pound_n sterling_n 48_o a_o table_n of_o the_o decimal_n of_o a_o english_a foot_n to_o every_o inch_n and_o eight_o part_n of_o a_o inch_n 49_o chap._n iii_o the_o extraction_n of_o the_o square-root_n by_o arithmetic_n 52_o to_o extract_v the_o sqaure-root_n by_o logarithm_n and_o gunter's-scale_n 56_o to_o extract_v the_o cube-root_n by_o arithmetic_n 57_o to_o prepare_v a_o cube_n number_n for_o extraction_n 59_o to_o extract_v the_o cube-root_n by_o the_o logarithm_n 63_o to_o extract_v the_o cube-root_n by_o gunter's-scale_n 64_o a_o table_n of_o square-root_n 65_o a_o table_n of_o cubick-root_n 66_o to_o make_v the_o table_n of_o square_a and_o cube-root_n 67_o a_o table_n of_o logarithm_n 8_o a_o description_n and_o use_n of_o the_o table_n of_o logarithm_n 82_o multiplication_n by_o logarithm_n 86_o division_n by_o logarithm_n 87_o of_o a_o circle_n 88_o 1._o the_o diameter_n be_v give_v to_o find_v the_o circumference_n by_o the_o logarithm_n ibid._n 2._o the_o circumference_n be_v give_v to_o find_v the_o diameter_n 89_o 3._o the_o diameter_n of_o a_o circle_n be_v give_v to_o find_v the_o area_n or_o superficial_a content_n thereof_o 90_o 4_o the_o circumference_n be_v give_v to_o find_v the_o area_n 91_o chap._n iv_o contain_v geometrical_a rudiment_n useful_a in_o the_o art_n of_o gunnery_n 93_o to_o raise_v a_o perpendicular_a from_o the_o middle_n of_o a_o line_n give_v ibid._n to_o let_v a_o perpendicular_a fall_n from_o a_o point_n assign_v to_o the_o middle_n of_o a_o line_n give_v 94_o to_o raise_v a_o perpendicular_a upon_o the_o end_n of_o a_o line_n give_v 95_o to_o let_v fall_v a_o perpendicular_a from_o a_o point_n assign_v unto_o the_o end_n of_o a_o line_n give_v 96_o to_o draw_v a_o line_n parallel_v to_o a_o line_n give_v 97_o a_o geometrical_a way_n to_o find_v the_o diameter_n of_o a_o bullet_n that_o weigh_v twice_o as_o much_o as_o a_o know_a bullet_n 98_o the_o weight_n of_o a_o shot_n give_v to_o find_v the_o 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circumference_n of_o any_o spherical_a body_n be_v know_v to_o find_v the_o superficial_a content_a 111_o prob._n 8._o the_o axis_n or_o diameter_n of_o a_o globical_a body_n be_v know_v to_o find_v the_o solid_a content_a 112_o prob._n 9_o the_o diameter_n of_o a_o bullet_n be_v give_v with_o the_o weight_n to_o find_v the_o weight_n of_o another_o bullet_n of_o the_o same_o metal_n but_o of_o another_o diameter_n either_o great_a or_o lesser_a 113_o prob._n 10._o have_v the_o weight_n of_o a_o bullet_n of_o one_o kind_n of_o metal_n to_o find_v the_o weight_n of_o a_o bullet_n of_o another_o kind_n of_o metal_n be_v equal_a in_o magnitude_n 116_o prob._n 11._o a_o bullet_n of_o iron_n that_o weight_v seventy_o two_o pound_n what_o will_v a_o bullet_n of_o lead_n weigh_v that_o be_v equal_a to_o it_o in_o bigness_n 118_o prob._n 12._o the_o diameter_n and_o weight_n of_o any_o one_o cylend_a of_o a_o piece_n of_o great_a ordnance_n take_v at_o the_o base_a ring_n be_v know_v to_o 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763_o 2,88252_o 764_o 2,88309_o 765_o 2,88361_o 766_o 2,88423_o 767_o 2,88479_o 768_o 2,88536_o 769_o 2,88592_o 770_o 2,88649_o 771_o 2,88705_o 772_o 2,88762_o 773_o 2,88818_o 774_o 2,88874_o 775_o 2,88930_o 776_o 2,88986_o 777_o 2,89042_o 778_o 2,89093_o 779_o 2,89154_o 780_o 2,89209_o 781_o 2,89265_o 782_o 2,89321_o 783_o 2,89376_o 784_o 2,89431_o 785_o 2,89487_o 786_o 2,89542_o 787_o 2,89597_o 788_o 2,89653_o 789_o 2,89708_o 790_o 2,89763_o 791_o 2,89818_o 792_o 2,89872_o 793_o 2,89927_o 794_o 2,89982_o 795_o 2,90037_o 796_o 2,90091_o 797_o 2,90146_o 798_o 2,90200_o 799_o 2,90255_o 800_o 2,90309_o 801_o 2,90363_o 802_o 2,90417_o 803_o 2,90472_o 804_o 2,90526_o 805_o 2,90580_o 806_o 2,90633_o 807_o 2,90687_o 808_o 2,90741_o 809_o 2,90795_o 810_o 2,90848_o 811_o 2,90902_o 812_o 2,90956_o 813_o 2,91005_o 814_o 2,91062_o 815_o 2,91116_o 816_o 2,91169_o 817_o 2,91222_o 818_o 2,91277_o 819_o 2,91328_o 820_o 2,91381_o 821_o 2,91434_o 822_o 2,91487_o 823_o 2,91540_o 824_o 2,91593_o 825_o 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2,94792_o 888_o 2,94841_o 889_o 2,94890_o 890_o 2,94939_o 891_o 2,94988_o 892_o 2,9503●_n 893_o 2,95085_o 894_o 2,95134_o 895_o 2,95182_o 896_o 2,95231_o 897_o 2,95279_o 898_o 2,95328_o 899_o 2,95376_o 900_o 2,95424_o 901_o 2,95472_o 902_o 2,95521_o 903_o 2,95569_o 904_o 2,95617_o 905_o 2,95664_o 906_o 2,95713_o 907_o 2,95761_o 908_o 2,95809_o 909_o 2,95856_o 910_o 2,95904_o 911_o 2,95952_o 912_o 2,95999_o 913_o 2,96047_o 914_o 2,96095_o 915_o 2,96142_o 916_o 2,96189_o 917_o 2,96237_o 918_o 2,96284_o 919_o 2,96331_o 920_o 2,96379_o 921_o 2,96426_o 922_o 2,96473_o 923_o 2,96520_o 924_o 2,96567_o 925_o 2,96614_o 926_o 2,96661_o 927_o 2,96708_o 928_o 2,96755_o 929_o 2,96802_o 930_o 2,96848_o 931_o 2,96895_o 932_o 2,96941_o 933_o 2,96988_o 934_o 2,97035_o 935_o 2,97081_o 936_o 2,97128_o 937_o 2,97174_o 938_o 2,97220_o 939_o 2,97267_o 940_o 2,97313_o 941_o 2,97359_o 942_o 2,97405_o 943_o 2,97451_o 944_o 2,97497_o 945_o 2,97543_o 946_o 2,97589_o 947_o 2,97635_o 948_o 2,97681_o 949_o 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any_o operation_n in_o the_o art_n of_o gunnery_n in_o each_o page_n of_o the_o table_n be_v contain_v six_o column_n in_o the_o first_o the_o third_z and_o five_o towards_o the_o left_a hand_n be_v contain_v all_o absolute_a number_n begin_v at_o 1_o and_o so_o on_o by_o 2_o 3_o 4_o 5_o 6_o etc._n etc._n to_o 1000_o have_v the_o letter_n n._n at_o the_o head_n of_o each_o column_n then_o in_o the_o second_o four_o and_o six_o column_n of_o every_o page_n be_v contain_v the_o logarithmical_a number_n answer_v each_o absolute_a number_n against_o which_o it_o stand_v and_o these_o column_n have_v at_o the_o head_n of_o they_o the_o word_n logar_n the_o number_n be_v thus_o dispose_v in_o the_o several_a page_n of_o the_o table_n it_o be_v easy_a to_o find_v the_o logarithmical_a number_n that_o answer_v there_o to_o any_o absolute_a number_n that_o shall_v be_v require_v or_o on_o the_o contrary_a if_o any_o logarithmical_a number_n be_v give_v it_o will_v be_v easy_a to_o find_v the_o absolute_a number_n to_o which_o it_o belong_v for_o if_o you_o find_v your_o absolute_a number_n in_o any_o column_n of_o the_o table_n under_o the_o letter_n n._n that_o number_n that_o stand_v in_o the_o next_o column_n to_o it_o on_o the_o right_a hand_n under_o the_o title_n logar_n be_v the_o logarithmical_a number_n thereunto_o belong_v and_o on_o the_o contrary_a in_o what_o part_n of_o the_o table_n soever_o you_o find_v any_o logarithmical_a number_n that_o number_n which_o stand_v in_o the_o next_o column_n on_o the_o left_a hand_n thereof_o be_v the_o absolute_a number_n so_o find_v and_o note_v further_o that_o all_o the_o logarithmical_a number_n between_o 1_o and_o 10_o have_v a_o cypher_n before_o they_o all_o number_n between_o 10_o and_o 100_o have_v the_o figure_n 1_o before_o they_o all_o number_n between_o 100_o and_o 1000_o have_v the_o figure_n 2_o before_o they_o which_o 1_o and_o 2_o figure_n be_v call_v the_o characteristiques_n of_o those_o number_n and_o to_o the_o end_n what_o i_o have_v here_o deliver_v may_v be_v make_v plain_a i_o shall_v give_v example_n thereof_o in_o the_o two_o follow_a proposition_n prop._n 1._o let_v it_o be_v require_v to_o find_v the_o logarithmical_a number_n belong_v to_o 16_o turn_v to_o the_o table_n in_o the_o first_o column_n of_o the_o first_o page_n where_o you_o will_v find_v 16_o under_o the_o letter_n n._n and_o right_o against_o it_o towards_o the_o right_a hand_n you_o shall_v find_v this_o number_n 1,20412_o which_o be_v the_o logarithm_n thereof_o likewise_o in_o the_o same_o page_n and_o column_n against_o 25_o you_o will_v find_v 1,39794_o which_o be_v the_o logarithm_n thereof_o also_o you_o shall_v by_o the_o same_o rule_n find_v that_o the_o logarithm_n of_o 4_o will_v be_v 0,60206_o the_o logarithm_n of_o 51_o will_v be_v 1,70757_o the_o logarithm_n of_o 321_o will_v be_v 2,50650_o and_o by_o the_o converse_n of_o what_o be_v here_o deliver_v you_o may_v find_v the_o absolute_a number_n answer_v to_o any_o give_v logarithm_n as_o in_o the_o follow_a proposition_n prop._n 2._o a_o logarithmical_a number_n be_v give_v to_o find_v the_o absolute_a number_n thereunto_o belong_v let_v it_o be_v require_v to_o find_v the_o absolute_a number_n belong_v to_o this_o logarithm_n 1,20412_o look_v in_o the_o table_n in_o the_o first_o page_n thereof_o and_o cast_v your_o eye_n down_o among_o the_o number_n under_o the_o word_n logar_n you_o will_v find_v this_o number_n 16_o to_o stand_v just_a against_o it_o on_o the_o left_a hand_n which_o be_v the_o absolute_a number_n of_o that_o logarithm_n the_o same_o be_v to_o be_v understand_v of_o all_o other_o number_n comprise_v in_o the_o forego_n table_n observe_v this_o caution_n when_o you_o have_v a_o logarithmical_a number_n give_v which_o when_o you_o look_v for_o you_o can_v find_v in_o the_o table_n you_o must_v then_o take_v the_o near_a number_n thereto_o and_o the_o absolute_a number_n which_o stand_v against_o it_o be_v the_o near_a less_o whole_a number_n which_o you_o must_v take_v as_o for_o example_n if_o you_o have_v this_o logarithmical_a number_n 0,63258_o which_o if_o you_o look_v for_o in_o the_o table_n you_o can_v find_v it_o therefore_o you_o must_v take_v the_o near_o less_o number_n which_o you_o will_v find_v to_o be_v 0,60206_o and_o right_o against_o it_o on_o the_o left_a hand_n you_o will_v find_v to_o be_v 4_o the_o near_a absolute_a number_n to_o that_o logarithm_n let_v this_o suffice_v for_o the_o description_n next_o follow_v the_o use_n the_o use_n of_o the_o table_n of_o logarithm_n in_o arithmetic_n which_o shall_v be_v exemplify_v in_o question_n of_o multiplication_n division_n and_o the_o extract_a the_o square_a and_o cube_n root_n be_v such_o part_n of_o arithmetic_n which_o tend_v whole_o to_o the_o matter_n intend_v in_o this_o treatise_n and_o therefore_o i_o shall_v begin_v with_o multiplication_n multiplication_n by_o the_o logarithm_n you_o must_v add_v the_o logarithm_n of_o the_o two_o number_n to_o be_v multiply_v together_o and_o the_o