2. The Interpretation of Nature. By C. LLOYD MORGAN, LL.D., 



F.R.S. Crown 8vo. Net, $1.25. 



Dr. Morgan seeks to prove that a belief in purpose as the causal reality of which 

 nature is an expression is not inconsistent with a full and whole-hearted acceptance of 

 the explanations of naturalism. 



23. Mosquito Life. The Habits and Life Cycles of the Known Mos- 

 quitoes of the United States ; Methods for their Control ; and Keys for 

 Easy Identification of the Species in their Various Stages. An account 

 based on the investigation of the late James William Dupree, Surgeon- 

 General of Louisiana, and upon the original observations by the Writer. 

 By EVELYN GROESBEECK MITCHELL, A.B., M.S. With 64 Illustra- 

 tions. Crown 8vo. Net, $2.00. 



This volume has been designed to meet the demand of the constantly increasing 

 number of students for a work presenting in compact form the essential facts so far made 

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 of the work has been slighted, or fundamental information omitted, in the endeavor to 

 carry this plan into effect. 



24. Thinking, Feeling, Doing. An Introduction to Mental Science. 

 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. 



u The chapters on Time ai i 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 investi- 

 gation, as well as to the general public. 



27. Criminal Man. According to the Classification of CESARE LOM- 

 BROSO. 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 crimi- 

 nal, with a view to diminishing the injury caused to society by his anti-social acts ; also 

 to superintendents, teachers, and those engaged in rescuing orphans and children of 

 vicious habits, as a guide in checking the development of evil germs and eliminating 

 Inco'-n'spble subjects whose example is a source of corruption to other* 



