HERSCHEL, WILLIAM.

On the Quantity and Velocity of the Solar Motion. Read February 27, 1806.

(London, Bulwer and Co., 1806). Large 4to. Without wrappers as extracted from "Philosophical Transactions of the Royal Society of London." Year 1806-Part I. Pp. 205-236 and 6 engraved plates. Fine and clean.

Fist printing of this paper in which Herschel tries to investigate both the direction and the movement of the sun by comparing it with his observations of neighboring stars, following his investigations on the same subject from 1783 and 1805.

Order-nr.: 42382