384 Biolof/y in America 



Such in brief are a few of the methods, discoveries and 

 j)robleins of the acjiiatic biologist. Since time immemorial 

 men have turned to the water as tlie source of life, and to- 

 day the study of its life, in spite of difficullies nnd perplexi- 

 ties, is one of the most compelling fields of human interest. 



