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 

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

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 Easy Identification of the Species in their Various Stages. An 

 account based on the investigation of the late James William Dupree, 

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 by the Writer. By EVELYN GROESBEECK MITCHELL, A.B., M.S. 

 With 64 Illustrations. 8. Net, $2.00. 



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. 

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

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 Jour. Amer. Med. Ass'n., Feb. 22, 1908. 



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

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M. de Launay is a professor of considerable repute not only in France, but among 

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

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As the application of the present-day interpretation of Radium (that it is an 

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

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Signora Guglielmo Ferrero's r6sum of her father's work on criminal anthropo- 

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28. The Social Evil. With Special Reference to Conditions Existing 

 in the City of New York. A Report Prepared in 1902 under the 

 Direction of the Committee of Fifteen. Second Edition, Revised, 

 with New Material Covering the Years 1902-1911. Edited by 

 EDWIN R. A. SELIGMAN, LL.D., McVickar Professor of Political 

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A study that is far from being of merely local interest and application. The 

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