Uppsala and Stockholm, Almqvist & Wiksells, 1906. 4to (31.2 x 24.4 cm). 410 pp.; 11 plates, 29 text figures. Printed wrappers and plain protective wrappers with mounted label with handwritten title.

A major monograph on plant seed dispersal by ants, written by the Swedish botanist, geologist and archaeologist Johan Rutger Sernander (1866-1944). "He was one of the founders of the study of palynology which would later be developed by Lennart von Post, as well as a pioneer in the early Swedish natural conservation and ecology movements" (Wikipedia). Published for the Kungl. Svenska Vetenskapsakademiens, being their Handlingar Band 41(7). Uncut. Cancelled stamp on title. The additional protective wrapper partly cut; the real wrapper, however, intact, just a bit creased at edges. A very good copy.