126 



Psyche 



[August 



ment of the adults on the body of their host after the onset of cold 

 weather. 



Some years ago Conn of the Connecticut State Board of Health 

 {Rept. State Bd. Health, Conn., 1910-11 (1912) suggested a pos- 

 sible etiological connection between fleas and anterior poliomyeli- 

 tis, but others have not been able to harmonize the persistence of 

 fleas through the winter with the very slight incidence of polio- 

 myelitis during this part of the year. Thus, in considering any 

 possible insect carriers of this disease, Brues and Sheppard {Journ. 



JAN. FEB. MAR. APR. MAY JUN. JUL. AUG. SEP. OCT. NOV. DEC. 



Table 1. Seasonal Incidence of Anterior Poliomyelitis in Massachusetts, New 



York and Ohio. 



