First bilingual French-German edition, illustrated with 71 plates and a fortification table.
Contemporary full ivory vellum binding. Smooth spine decorated with triple blind fillets, title and author in pen. Boards framed with triple blind fillets; traces of clasps. All edges blue. Six small contemporary leather bookmarks. Bavarian bookplate of the period.
Spine split with a small loss along its entire length. One joint slightly cracked (1.5cm). A small ink stain on the second board. Pages uniformly and lightly browned. Front pastedown affected by bookworm damage.
First edition.
Contributions by f. Piazza "Colette", J.A. Sorel, J. Nels...
A good copy.
First edition illustrated with two title vignettes designed by Picart.
19th-century black Bradel binding in full boards. Orange calf title labels. Small rubbing to headcap. Handsome copy.
A major work on generation and embryology, in which one discovers the hypothesis of chromosomes as well as that of environmental influence. Bonnet perfects his thesis according to which every being exists previously in germ form in nature, thus the embryo already exists in the seminal fluid, and generation is merely the simple development of the germ, which, from small, develops through nutrition; the germ already containing everything that will be developed. Although Bonnet develops the extensions and consequences of this fundamental postulate, this in no way prevents him from penetrating the mysteries of embryology and fertilization. The germ thesis seeming a middle ground between spontaneous generation and procreation, it appears a solution to the theoretical impasse to which spontaneous generation leads, contradicted by observations, in which Bonnet possesses great finesse. Bonnet is not only interested in mammals but extensively in plants and earthworms.
Librairie Alain Brieux label.
