DOUGLASS, ROBERT (+) WILLIAM MOUNTAINE (+) NEVIL MASKELYNE (+) EDMOND HALLEY

The Variation of the Compass; Containing 1719 Observations to, in, and from, the East Indies, Guinea, West Indies, and Mediterranean, with the Latitudes and Longitudes at the Time of Observation. The Longitude for the Most Part Reckoned from the Meridian of London; If Otherwise, It is Taken Notice of in the Margin. By Mr. Robert Douglass. Recommended to the Public by the Late Dr. Halley. Communicated by the Rev. Nevil Maskelyne, Astronomer Royal, F. R. S. with a Letter Prefixed from William Mountaine, Esq. F. R. S. to Mr. Maskelyne.

London, Lockyer Davis, 1776.

4to. In recent marbled paper wrappers. In "Philosophical Transactions of The Royal Society", vol 66. All leaves reinforced in margin, light miscolouring to first and last leaves. Otherwise fine. VII, (1), 72 pp. 

Order-nr.: 60034