List of Members 219 



and forty-four cuts, it may not be amiss to cite the topics 

 discussed, which are in brief: 



The nature of the aquatic environment, — properties 

 and uses of water, water and land; 



Types of aquatic environment, — lakes and ponds, 

 streams, marshes, swamps and bogs ; 

 Aquatic organisms, — plants, animals; 

 Adjustment to conditions of aquatic life, — individ- 

 ual adjustment, mutual adjustment; 



Aquatic societies, — limnetic societies, littoral socie- 

 ties; 



Inland water culture, — aboriginal water culture, 

 water crops, water culture and civic improvement; 



Bibliography, — more important papers dealing with 

 life in the water; 



Index. 

 While, as might be expected from the previous work 

 of the authors, the emphasis is placed on ecology or the 

 relation of aquatic organisms to their environment, there 

 is also much valuable material on the general biology 

 and life histories of aquatic forms, and the economic side 

 is not neglected. 



The reviewer does not hesitate to recommend the book 

 as well worth the perusal of anyone interested in aquatic 

 life. 



R. C. O. 



