XIV. BACTERIA AND THEIR PRODUCTS. By Dr. G. Sims Woodhead. Illustrated.

"An excellent summary of the present state of knowledge of the subject."—Lancet.

XV. EDUCATION AND HEREDITY. By J. M. Guyau.

"It is a sign of the value of this book that the natural impulse on arriving at its last page is to turn again to the first, and try to gather up and coordinate some of the many admirable truths it presents."—Anti-Jacobin.

XVI. THE MAN OF GENIUS. By Professor Lombroso. Illustrated.

"By far the most comprehensive and fascinating collection of facts and generalisations concerning genius which has yet been brought together."—Journal of Mental Science.

XVII. THE GRAMMAR OF SCIENCE. By Professor Karl Pearson. Illustrated.

XVIII. PROPERTY: ITS ORIGIN AND DEVELOPMENT. By Ch. Letourneau, General Secretary to the Anthropological Society, Paris, and Professor in the School of Anthropology, Paris.

An ethnological account of the beginnings of property among animals, of its communistic stages among primitive races, and of its later individualistic developments, together with a brief sketch of its probable evolution in the future.