Adams, George. Astronomical and Geographical Essays Containing I. A Comprehensive View of the General Principles of Astronomy; II. the Use of the Celestial and Terrestrial Globes; III. the Description and Use of the Armillary Sphere, Planetarium, Tellurian, and Lunarium, IV. an Introduction to Practical Astronomy, Or, the Use of the Quadrant and Equatorial. London: Hindmarsh, 1789. Print.