VRIES, HUGO de. - THE THEORY OF MUTATIONS UNFOLDED.

Die Mutationstheorie. Versuche und Beobachtungen über die Entstehung von Arten im Pflanzenreich. 2 Bde. (1. Die Entstehung der Arten durch Mutation. 2. Elementare Bastardlehre).

Leipzig, Veit & Comp., 1901-03. Lex8vo. Bound in 2 fine contemp. hcalf. Raised bands, gilt spines and with gilt lettering. A few minor scratches. A name cut from front free endpaper. XII,648;XIV,752 pp., textillustrations and 12 colourplates. Internally fine and clean.

First edition og this classic work in genetics, where de Vries further develops the theory of mutations.- "De Vries experimental work in the 1890' led to the rediscovery of Mendel's laws and the discovery of the phenomenon of mutation. The rediscovery of Mendel's laws was announced almost simultabeously by de Vries, Correns, and Tschermak-Seysenegg - in that order....The results of his more than ten years of experimentation and study were laid down in de Vries's "Die Mutationstheorie....(1901-1903), in which he described in detail his work on the segregation laws, on phenomena of variation, and on plant mutations. The book made him famous, and he was recognized as one of the foremost botanists of his time."(DSB).
"De Vries discovered, revealed, and proved the importence of Mendel's work. Advanced the theory of "mutations" or discontinous change in the character of species."( Horblit. One Hundred Books famous in Science, No. 73 b). - Dibner. Heralds of Science No 36. - Garrison & Morton No 240. - Sparrow. Milestones of Science No 194.

Order-nr.: 42079