BY THE SAME AUTHOR. 



Evolution of To-Day. A Summary of the Theory of Evo- 

 lution as held by modern scientists, and an account of the 

 progress made through the investigations and discussions 

 of a quarter of a century. Octavo . . . $1 75 



CONTENTS : Introduction What is Evolution? Are 

 Species Mutable ? Classification of the Organic World 

 Life During the Geological Ages Embryology Geo- 

 graphical Distribution Darwin's Explanation of Evolu- 

 tion More Recent Attempts to Explain Evolution The 

 Evolution of Man. 



*' There have been so many volumes upon evolution that an ordi- 

 nary reader may be inclined to overlook this of Professor Conn. We 

 warn him, however, that in so doing he is sure to miss a rare contribution. 

 It is just the thing to set a layman right and is thoroughly judicial. It 

 sets down the general trend of thinkers as to evolution and Darwinism, 

 finding limits to both and marking their usefulness when properly 

 employed." Hartford Post. 



" Dr. Conn evidently favors the theory, but he does not write as a 

 partisan or to carry a point, but simply to show what has been the result 

 of the fruitful labors of the last twenty-five years. As a devout theist, he 

 considers evolution simply a method of creation, and does not believe that 

 this derogates from the glory of the Divine Architect." N. Y, Observer. 



G. P. PUTNAM'S SONS, NEW YORK AND LONDON. 



