indication of definite specific problems that need investiga- 

 tion, many of which may be profitably taken up by anyone 

 in a small garden. He has rescued the subject of evolution 

 from the thrall of polemics and brought it once more within 

 reach of the great mass of naturalists, any one of whom 

 may reasonably hope to contribute something to its advance- 

 ment by orderly observations. 



The text of the lectures has been revised and rendered 

 into a form suitable for permanent record by Dr. D. T. Mac- 

 Dougal who has been engaged in researches upon the sub- 

 ject for several years, and who" has furnished substantial 

 proof of the mutation theory of the origin of species by his 

 experimental investigations carried on in the New York 

 Botanical Gardens. 



A New Book by Prof. De Vries 



PLANT BREEDING 



Comments on the Experiments of 

 NILSSON AND BURBANK 



By 



Hugo De Vries, Professor of Botany in the University of 



Amsterdam. 



A scientific book in simple language. Intensely interest- 

 ing as well as instructive. Of special value to every botanist, 

 horticulturist and farmer. 



Pp. XV+360. Illustrated with 114 beautiful half-tone 

 plates from nature. Printed on fine paper, in large type. 

 Cloth, gilt top. Price, $1.50 net. Mailed, $1.70. 



MAN A CREATOR. 



If man can truly be said to have been created in the 

 image of God, he ought to evince his divinity by imitating 

 the creator in deeds of creation, and this, indeed, has long 

 been recognized as the worthiest occupation of man. The 

 poet, the artist, the inventor, in fact all original thinkers 

 and leaders, produce new forms, new devices and contri- 

 vances, new thoughts and higher ideals. Indeed it seems 



