XIV. BACTERIA AND THEIR PRODUCTS. By Dr. G. Sims Woodhead. Illustrated. Second Edition. 3s. 6d.

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

XV. EDUCATION AND HEREDITY. By J. M. Guyau. 3s. 6d.

“It is at once a treatise on sociology, ethics, and pæedagogics. It is doubtful whether among all the ardent evolutionists who have had their say on the moral and the educational question any one has carried forward the new doctrine so boldly to its extreme logical consequence.”—Professor Sully in Mind.

XVI. THE MAN OF GENIUS. By Prof. Lombroso. Illustrated. 3s. 6d.

“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. PROPERTY: ITS ORIGIN AND DEVELOPMENT. By Ch. Letourneau, General Secretary to the Anthropological Society, Paris, and Professor in the School of Anthropology, Paris. 3s. 6d.

“M. Letourneau has read a great deal, and he seems to us to have selected and interpreted his facts with considerable judgment and learning.”—Westminster Review.

XVIII. VOLCANOES, PAST AND PRESENT. By Prof. Edward Hull, LL.D., F.R.S. 3s. 6d.

“A very readable account of the phenomena of volcanoes and earthquakes.”—Nature.