"CHAULNES, LE DUC DE. - INVENTION OF THE DUC DE CHAULNES-MICROSCOPE.
Reference : 53455
(1770)
Paris, L'Imprimerie Royale, 1770. 4to. Without wrappers. In ""Histoire de L'Academie Royale des Sciences. Année MDCCLXVII. Avec les Memoires de Mathematiques & de Physique, pour la même Année."" Pp. 423-470 and 10 folded engraved plates. Clean and fine.
First edition. The author here describes his invention of this microscope with full instructions for manufacture and with fine drawings of every part of the instrument on 10 fine plates.