EDITED BY HAVELOCK ELLIS.

Crown 8vo, Cloth, 3s. 6d. per vol.; Half Morocco, 6s. 6d.

I. THE EVOLUTION OF SEX. By Professor Patrick Geddes and J. Arthur Thomson. With 90 Illustrations. Second Edition.

"The authors have brought to the task—as indeed their names guarantee—a wealth of knowledge, a lucid and attractive method of treatment, and a rich vein of picturesque language."—Nature.

II. ELECTRICITY IN MODERN LIFE. By G. W. de Tunzelmann. With 88 Illustrations.

"A clearly-written and connected sketch of what is known about electricity and magnetism, the more prominent modern applications, and the principles on which they are based."—Saturday Review.

III. THE ORIGIN OF THE ARYANS. By Dr. Isaac Taylor. Illustrated. Second Edition.

"Canon Taylor is probably the most encyclopÆdic all-round scholar now living. His new volume on the Origin of the Aryans is a first-rate example of the excellent account to which he can turn his exceptionally wide and varied information.... Masterly and exhaustive."—Pall Mall Gazette.

IV. PHYSIOGNOMY AND EXPRESSION. By P. Mantegazza. Illustrated.

"Professor Mantegazza is a writer full of life and spirit, and the natural attractiveness of his subject is not destroyed by his scientific handling of it."—Literary World (Boston).

V. EVOLUTION AND DISEASE. By J. B. Sutton, F.R.C.S. With 135 Illustrations.

"The work is of special value to professional men, yet educated persons generally will find much in it which it is both interesting and important to know."—The Scottish Weekly.

VI. THE VILLAGE COMMUNITY. By G. L. Gomme. Illustrated.

"His book will probably remain for some time the best work of reference for facts bearing on those traces of the village community which have not been effaced by conquest, encroachment, and the heavy hand of Roman law."—Scottish Leader.

VII. THE CRIMINAL. By Havelock Ellis. Illustrated.

"An ably written, an instructive, and a most entertaining book."—Law Quarterly Review.

London: Walter Scott, Limited, 24 Warwick Lane.