Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 274
erk, which detaches the two lower of thethree cords by which the log-chip is attached to the line, thelog falls flat, and is readily drawn in. Since each knot is (approximately) the same part of a geo-graphical mile that the time is of one hour, the number ofknots run out, while the sand is running… … Fig. 5. water after the vessel by a line about fifty fathoms long. Thecylinder consists of two parts. The hinder part, or rotator, ismade to revolve by four curved blades as the log is drawnthrough the water; the forward part, which is kept fromrevolving by two straight blades, contains a…
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