The mariners new kalendar. [electronic resource] : Containing the principles of arithmetick and geometry : with the extraction of the square and cube root : also rules for finding the prime, epact, moon's age, time of high-water, with tables for the same. : Together with exact tables of the sun's place, declination, and right ascension ... : Also the description and use of the sea-quadrant, forestaff and nocturnal ... / by Nath. Colson, student in the mathematicks.