Lot No: 9254

John Bird (1709-1776): 'The method of dividing astronomical instruments : By Mr. John Bird, mathematical instrument-maker, in the Strand. Published by order of the Commissioners of Longitude', London, John Nourse, 1767, first edition, 1 engraved folding plate (numbered 'Plate IV') as called for, vi, 14pp, quarto, 20th Century rebound plain cloth (worn), printed label to top board, waterstaining to title page and first few leaves. John Bird was an eminent maker of mathematical instruments. Born in Bishop Auckland, he came to London in 1740, working for Jonathan Sisson and George Graham, before setting up his own business in the Strand in 1745. Bird's instruments were of such quality that the Commissioners of Longitude paid him ?500 (a huge sum) on condition that he take on an apprentice for 7 years and produce in writing upon oath, a full account of his working methods. This was the origin of Bird's two treatises, this work, and 'The Method of Constructing Mural Quadrants' (1768). A scarce and important work, The English Short Title Catalogue states the printer, William Bowyer and John Nichols, printed 500 copies only

Sale Price: £180.00