Rare Books

A complete epitome of practical navigation, : containing all necessary instruction for keeping a ship's reckoning at sea: with the most approved methods of ascertaining the latitude, by meridian, single, or double altitudes, and the longitude, by chronometers, or lunar observations; including a journal of a voyage from London to Madeira; and every other requisite to form the complete navigator; the whole being rendered perfectly easy, and illustrated by several engravings. To which is added a correct and extensive set of tables, preceded by a copious explanation of each table