22. 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- 

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

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

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

 By E. W. SCRIPTURE, Ph.D., M.D., Assistant Neurologist Columbia 

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 University. 189 Illustrations. 2d Edition, Revised and Enlarged. 



Crown 8vo. Net, $1.75. 



" The chapters on Time and Action, Reaction Time, Thinking Time, Rhythmic 

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 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." your. 

 Anter. Med. Ass^n., Feb. 22, 1908. . 



25. The World's Gold. By L. DE LAUNAY, Professor at the Ecole 

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 With an Introduction by Charles A. Conant, author of " History of 

 Modern Banks of Issue," etc. Crown 8vo. Net, $1.75. 

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26. The Interpretation of Radium. By FREDERICK SODDY, Lecturer 

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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- 

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

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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- 

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

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