Essay on the Use of Celestial and Terrestrial Globes, An

Originally published in 1766, An Essay on the Use of the Celestial and Terrestrial Globes can help you find the longitude of wherever you are or tell the time of day without using a watch. Utilizing simple scientific truths, George Adams describes how to construct a sundial, ascertain the sun's declination, determine the coordinates of a comet, plan for winter or summer solstices, and much more. His studies exemplify the general principles of navigation and are explained here in a series of astronomical and geographical essays and instructions.