75/2169 [Botany]. Vries, H. de. Die Mutationstheorie. Versuche und Beobachtungen über die Entstehung von Arten im Pflanzenreich. Leipsic, Veit & Co., 1901/ 1903, 1st ed., 6 vols., 12 chromolithogr. plates, num. ills., orig. unif. wr., large 8vo.

- First vol. bookblock broken and wrs. loose. All vols. spines worn/ dam.

= With AUTOGRAPH SIGNED DEDICATION on p.1 of the first installment. Horblit 73b; PMM 356; DSB XIV, p.95-105; Garrison/ Morton 240: "Mendel's fundamental work was overlooked until 1900, when De Vries and others brought it into prominence and confirmed it in every respect."