BOUGUER, Pierre

The Figure of the Earth, determined by the observations of Messrs Bouguer, & de La Condamine sent by order of the King to Peru. With an abridged relation of this voyage, which contains the description of the country. Paris, Charles-Antoine Jombert, 1749. In-4 (251 x 191 mm) of 12 ff.n.ch., XC, 394 pp. 1 f.n.ch. (errata), 9 folding engraved plates. Marbled calf, spine ribbed and decorated, red edges (contemporary binding). Alden-Landis, 749/35; Sabin, 6876; Brunet, III, 729; Borba de Moraes, I, 446 (note). First edition. Pierre Bouguer (1698-1758), member of the scientific expedition with Charles Marie de La Condamine and Louis Godin, sent in 1735 by the Academy of Sciences to Peru to determine the exact shape and size of the earth. Copy complete of its 9 engraved plates with a large panoramic view of the profile of Peru and the map of the triangles of the meridian of Quito. A very good copy, spine and corners skilfully restored; trace of gummed stamp on the title.