BY J. ARTHUR THOMSON 



Professor of Natural History in the University of Aberdeen 



"An ideal writer on Natural History." New York Times Review. 



THE BIOLOGY OF THE SEASONS 



With 12 colored plates. 8vo. $2.75 net. 



Some of the forty-one chapters are:" The Tale of Tad- 



oles,"" Rhythms of Plant Life " " G nations Concern- 



ig Migration," " Courtship of 

 of Nests," " The Work of Eart 

 tory of Rest," " Hibernation," 



" A curious and unusual combination of qualities . . . A highly in- 

 teresting book. . . . One notes in it a touch of that keen perception of 

 correlation and evolution with which Darwin was so richly endowed. 



. From Spencer, too, he has grasped the idea of the unity of a 

 science. ... A sympathetic observation and understanding of nature 

 near akin to that which has made Gilbert White the best beloved of all 

 nature-lovers. ... An ideal volume." Neva York Times Review. 



"Exceptionally valuable and interesting . . . and delightfully read- 

 able as well. . . . Will hold the attention of the most casual of natur 

 lovers, as well as of serious students of her ways." Aew xorK 1 noune. 



DARWINISM AND HUMAN LIFE 



8vo. $1.50 net; by mail, $r 65. 



"The gist of Darwinism. A brief account of what has been accom- 

 plished in the study of evolution. No better book for such a purpose is 

 available." The Dial. 



EVOLUTION 



By J. ARTHUR THOMSON and PATRICK GEDDES. 75 cents net. 

 (Home University Library.) 



This sketch of the evidences and meaning of " Evolution " 

 is no dull primer, but a many-colored and romantic panorama, 

 opening up " a rational vision of world-development." 



The earlier chapters give a running summary of the testi- 

 mony of explorers and geologists, anatomists, embryologists, 

 and physiologists. Then the "Great Steps in Evolution" 

 are recapitulated, and the facts of variation and heredity, 

 selection, function, and environment stated. Finally, the 

 chief evolution theories are summarized, and the authors' 

 adventure upon a " reinterpretation " of great interest. 



In Preparation 

 AN INTRODUCTION TO SCIENCE 



(Home University Library.) 75 cents net. 



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