The field of psychological research has been widened by the triple alliance of psychology, physiology, and sociology—an alliance at once of the most intimate and fundamental nature, and productive of far-reaching results. It need, therefore, occasion no surprise that among the volumes of a scientific series is to be found a treatise dealing with ethical questions. Recent works on ethics have not been numerous, and the writers seem more anxious to soar into the realm of lofty thought than to lay the foundations of work that will be positive and lasting. It would seem that the time has come for a system of ethics less ambitious in its aims, more restricted in its scope, and based on a more rigorous method of treatment.

Crown 8vo, Cloth, Price 6s.

THE MAKING OF CITIZENS: A Study in Comparative Education.

By R. E. HUGHES, M.A., B.Sc., Author of “Schools at Home and Abroad.”

It is instructive and interesting to have a complete and comprehensive account of both our own and foreign systems of education, based upon an exhaustive study of authoritative and official data. Mr. Hughes has set himself the task of showing in detail and by a series of pictures, so to speak, what the four leading nations of the world—England, France, Germany, and America—are doing in the way of manufacturing citizens. The primary and secondary systems are described in detail, and the social problems of national education are described and diagnosed.

Crown 8vo, Cloth, Price 6s. With 12 Portraits.

History of Geology and Palæontology to the end of the Nineteenth Century.

By KARL VON ZITTEL, Professor of Geology in the University of Munich.

Translated by MARIE M. OGILVIE-GORDON, D.Sc., Ph.D.

This work is recognised as the most complete and authoritative history of geology. It is brought down to the end of the nineteenth century. With the author’s advice and assistance the work has been slightly abridged by the omission of the less generally interesting matter.