Tübingen, Ludwig Friedrich Fues, 1845. 4to (27.2 x 22.2 cm). viii, 442 pp.; 13 lithographed plates of which five are partly or completely hand-coloured. 19th century half-cloth over marbled boards. Spine with gilt title.

First collected edition of von Mohl's great classical works. This marks the beginning of modern biology, and is of great rarity. Dibner, Herals of Science: "With the use of improved microscopes and techniques the broader became the understanding of the basic elements forming living tissue. Hugo von Mohl (1805-1872), professor of botany at Tübingen, gave the name protoplasm to the mucilaginous material within the plant cell adjacent to the membrane, a term that has grown to connote living substance and the founder of plant cytology". "In the early nineteenth century, however, the study of plant cells was revived, notably in Germany by Treviranus and von Mohl" (PMM). As usual, some foxing in the text due to the quality of the paper, but the plates are good. This work contains 31 papers originally published elsewhere, sometimes revised or expanded. Light spotting in the text, otherwise a very good copy. Dibner, 32; PMM, p. 175; Stafleu and Cowan, 6187.