THREE LECTURES ON THE SCIENCE OF LANGUAGE.

112 pages. 2nd Edition. Cloth, 75c (3s. 6d.).

ROMANES, GEORGE JOHN.

DARWIN AND AFTER DARWIN.

An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions. Three Vols., $4.00 net. Singly, as follows:

1. The Darwinian Theory. 460 pages. 125 illustrations. Cloth, $2.00.

2. Post-Darwinian Questions. Heredity and Utility. Pp. 338. $1.50.

3. Post-Darwinian Questions. Isolation and Physiological Selection. Pp. 181. $1.00.

AN EXAMINATION OF WEISMANNISM.

236 pages. Cloth, $1.00 net.