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of_o a_o vial_n that_o must_v take_v two_o or_o three_o turn_n about_o the_o roll_n in_o the_o surdge_n as_o you_o may_v imagine_v at_o the_o middle_n of_o the_o black_a roll_n or_o notch_v therein_o and_o pass_v from_o thence_o to_o the_o capstane_n with_o two_o or_o three_o turn_n there_o also_o then_o this_o vial_n also_o reeve_v through_o some_o other_o block_n as_o in_o manner_n of_o snach_n block_n and_o these_o block_n place_v between_o the_o capstane_n and_o the_o roll_n you_o may_v thereby_o increase_v that_o purchase_n so_o as_o that_o it_o may_v heave_v very_o easy_a and_o with_o great_a strength_n so_o as_o to_o be_v able_a to_o row_v a_o ship_n a_o head_n in_o a_o calm_a or_o in_o little_a wind_n two_o threee_v or_o four_o league_n a_o watch_n or_o more_o according_a as_o the_o engine_n shall_v be_v better_o or_o worse_o fit_v for_o if_o you_o mark_v in_o the_o figure_n of_o the_o work_n and_o suppose_v the_o vial_n reeve_v and_o by_o heave_v of_o the_o capstane_n shall_v 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