THE FORMATION OF VEGETABLE MOULD THROUGH THE ACTION OF WORMS, with observations on their habits. Fifth thousand (corrected)
Original green cloth, spine gilt lettered, brown endpapers. pp , (viii), 326, (2, ads). Book a bit leaned; quite minor wear to foot of spine; 1881 ink name on first (blank) page; faint spot to fore margin of front cover; else a fine copy, inner hinges not cracked. First published 10 Oct., 1881, the second, third, fourth, and fifth thousands were printed before the end of the year. There were some textual changes in this fifth thousand, the 2nd-4th thousands utilizing errata slips. Freeman 1361. This was his last scientific book, published just before his death on 19 April, 1882. It was the first significant work on soil bioturbation; worms fascinated Darwin and had been on his mind for 40 years.