Leipzig, W. Engelmann, 1859. Two papers in one. 8vo 921.2 x 13.8 cm). xiv, 154 pp.; three lithographed plates (one partly hand-coloured). Original printed wrappers bound in. 19th-century half cloth over marbled boards. Spine with handwritten label. Speckled edges.

A rare and very well illustrated treatise. The plates show crystals formed in cells. The author is the German botanist Ludwig Adolph Timotheus Radlkofer (1829-1927). "Radlkofer became a physician in 1854 and earned a PhD in botany at Jena the following year. He became an associate professor of botany at the University of Munich in 1859 as well as deputy director of the botanical garden and herbarium. In 1892 he was named director of the Botanical Museum. He was made emeritus professor in 1913 and died in 1927 in the same room in which he was born" (Wikipedia). In the rear a second work on the same subject, by A. W. F. Schimper, is bound in: "Untersuchungen über die Proteinkrystalloide der Pflanzen" (Strasburg, Karl J. Trübner, 1879), with 66 pp., and printed wrappers. The Strasburg-born botanist Andreas Franz Wilhelm Schimper (1856-1901) made major contributions in the fields of histology, ecology and plant geography. A few spots, otherwise clean. A very good copy.