By E. W. SCRIPTURE, Ph.D., M.D., Assistant Neurologist Columbia
University, formerly Director of the Psychological Laboratory at
Yale University. 189 Illustrations. 2d Edition, Revised and
Enlarged. Crown 8vo. Net, $1.75.

"The chapters on Time and Action, Reaction Time, Thinking Time,
Rhythmic Action, and Power and Will are most interesting. This book
should be carefully read by every one who desires to be familiar with
the advances made in the study of the mind, which advances, in the
last twenty-five years, have been quite as striking and epoch-making
as the strides made in the more material lines of knowledge."--_Jour.
Amer. Med. Ass'n._, Feb. 22, 1908.

+25.--The World's Gold.+ By L. DE LAUNAY, Professor at the Ecole
Superieure des Mines. Translated by Orlando Cyprian Williams.
With an Introduction by Charles A. Conant, author of "History of
Modern Banks of Issue," etc. Crown 8vo. Net, $1.75.

M. de Launay is a professor of considerable repute not only in France,
but among scientists throughout the world. In this work he traces the
various uses and phases of gold; first, its geology; secondly, its
extraction; thirdly, its economic value.

+26.--The Interpretation of Radium.+ By FREDERICK SODDY, Lecturer
in Physical Chemistry in the University of Glasgow. Crown 8vo.
With Diagrams. Net, $1.75.

As the application of the present day interpretation of Radium (that
it is an element undergoing spontaneous disintegration) is not
confined to the physical sciences, but has a wide and general bearing
upon our whole outlook on Nature, Mr. Soddy has presented the subject
in non-technical language, so that the ideas involved are within reach
of the lay reader. No effort has been spared to get to the root of the
matter and to secure accuracy, so that the book should prove
serviceable to other fields of science and investigation, as well as
to the general public.

+27.--Criminal Man.+ According to the Classification of CESARE
LOMBROSO. Briefly Summarized by his Daughter, Gina Lombroso
Ferrero. With 36 Illustrations and a Bibliography of Lombroso's
Publications on the Subject. Crown 8vo. Net, $2.00.

Signora Guglielmo Ferrero's resume of her father's work on criminal
anthropology is specially dedicated to all those whose office it is to
correct, reform, and punish the crimin