EDITORS' ANNOUNCEMENT 



The rapid increase of specialization makes it im- 

 possible for one author to cover satisfactorily the whole 

 field of modern Biology. This situation, which exists in 

 all the sciences, has induced English authors to issue 

 series of monographs in Biochemistry, Physiology and 

 Physics. A number of American biologists have decided 

 to provide the same opportunity for the study of 

 Experimental Biology. 



Biology, which not long ago was purely descriptive 

 and speculative, has begun to adopt the methods of the 

 exact sciences recognizing that for permanent progress 

 not only experiments are required but quantitative experi- 

 ments. It will be the purpose of this series of monographs 

 to emphasize and further as much as possible this develop- 

 ment of Biology. 



Experimental Biology and General Physiology are one 



and the same science, in method as well as content, since 



both aim at explaining life from the physico-chemical 



constitution of living matter. The series of monographs 



on Experimental Biology will therefore include the field 



of traditional General Physiology. 



Jacques Loeb, 

 ^' T. H. Morgan, 



r\V\ W^\ ^* *^* ^* OSTERHOUT. 





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