Wood engravings explanatory of the Theory of Evolution, selected by and drawn under the direction of Prof. G. J. Romanes. Designed for use in class and home instruction. Pp. 94. Paper, $1.00.

An Examination of Weismannism

By George John Romanes. With Portrait of Weismann, and a Glossary of Scientific Terms. Thoroughly indexed. Pp. ix., 221. Cloth, $1.00 net.

“The best criticism of the subject in our language.”—The Outlook, N. Y.

“The reader of this work will appreciate from this discussion, better than from the writings of Weismann himself, the significance of the final position adopted by Weismann.”—Science.

E. D. Cope. 1840-1897.
“One of the Great Men of Science of the World.”
—Science,New York, Sept., 1896.

The Primary Factors of Organic Evolution

By E. D. Cope. 121 illustrations. Pp. 550. Tables, bibliography and index. Cloth, net, $2.00. (10s.).

A comprehensive handbook of the Neo-Lamarckian theory of Evolution, drawing its main evidence from paleontology, as distinguished from œcology (Darwin) and embryology (Weismann). Discusses the “Energy of Evolution,” and lays special emphasis on the function of consciousness in organic development.

“Will stand as the most concise and complete exposition of the doctrines of the Neo-Lamarckian school hitherto published. A most valuable text-book for teachers and students.”—Science, N. Y.

“A work of unusual originality. No one can read the book without admiring the intimate knowledge of facts and the great power of generalization which it discloses.”—Prof. J. McK. Cattell.