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 chronometer, or lunar observations including a Journal of the voyage London to Madeira, and every other requisite to from the complete navigator, the whole being rendered perfectly easy, and illustrated by several engravings / by J. W. Norie