The advancement of the art of navigation : in two parts : the first shewing by a new canon of sines, tangents, and secants, how to resolve all cases of right-lined triangles, onely by looking into the tables without any calculation : particularly applied to all the three kinds of sailing : viz. by the plain chart, by Mercaters chart, by a great circle, and to the art of surveying : the second part, shewing several observations for the better odering of the log-line, and for the more exact and ready measuring, not onely of minutes, but seconds of time, with some new experiments and engines for the more constant finding of a ships way /