Chapter III: ASTRONOMICAL AND GEOGRAPHICAL ESSAYS, containing, 1. A full and

comprehensive View, on a new Plan, of the general Principles of Astronomy, with a large Account of the Discoveries of Mr. Herschel. 2. the Use of the Celestial and Terrestrial Globes, exemplified in a greater Variety of Problems than are to be found in any other Work: they are arranged under distinct Heads, and interspersed with much curious but relative Information. 3. The Description and Use of small Orreries and Planetaria, &c. 4. An Introduction to Practical Astronomy, by a Set of easy and entertaining Problems. _Third Edition_, 8vo. Price 10s. 6d. in Boards, illustrated with sixteen Plates.