Philosophical letters on the function of salts and crystals and on the Generation & Organic Mechanism of plants and animals. On the occasion of the Belemnite stone and the Lenticular stone. With a memoir on the theory of the Earth. Amsterdam, François L'Honoré, 1729. In-12. Ex libris of Georgius Altmann. Bound in spotted calf, spines decorated with gilt cartouches (rubbing, hinges cut, bumps). Pages browned, tear to the fossil plate.