Bruxelles, M. Hayez [later: the Société itself], 1862-1881. 25 volumes in 25. 8vo (21.2 x 13.6 cm). Over 10,000 pp.; numerous plates of which several tinted or coloured. Uniform late 19th-century pebbled cloth; spines with black morocco label with gilt title. Marbled endpapers. Speckled edges.

The seldom-seen start of this well-illustrated Belgian botanical series. From Volume 6 onwards, the name was changed from Bulletins to Bulletin. Slight shelf-wear to a few volumes, one affecting a shield, but generally in good condition, internally clean, with neither library markings, nor foxing or toning. The only indications of a previous owner are the small gilt initials F.D.J.N. (Bibliothèque Feuilles des Jeunes Naturalistes) at each spine foot, and a library stamp of Adrien Dollfus - most probably the French zoologist and carcinologist Adrien Frédéric Jules Dollfus (1858-1921), editor of the Feuilles - on the title of volume five. Slight wear to spine covers; some light, marginal damp-staining in a few places; Volumes 21-25, however, with a little more, mostly marginal, damp-staining and more wear to several spines. A good set. Cat. BM(NH) serial titles, p. 350.