First volume in 3 parts only (lacking the second volume, also in 3 parts), 4to (246 x 171 mm). 8 chromolithographed plates; numerous in-text illustrations. Original green printed wrappers, uncut (minor chipping, a few repairs to spines, some toning).

FIRST EDITION, PRESENTATION COPY, INSCRIBED BY DE VRIES: "Den hern E. K G Rose Van den Schigver Hugo de Vries." De Vries formulated his Laws of Mutation, suggesting that new species developed through a series of small random changes, through intensive study of Oenothera lamarckiana, a species of evening primrose, in 1886. His theory buttressed Darwin's evolutionism. Although the mutants were later discredited as the plant was shown to be a permanent hybrid, "The principle of mutation...remains a cornerstone of evolution theory" (Norman). Dibner Heralds of Science 36; Garrison-Morton 240; Norman 2169.