EIGENMANN— YELLOW FEVER AND FISHES. 211 



numbers of Stegomyia larvse. We used the life almost to the exclu- 

 sion of other fish because it is hardier and does not have the jumping 

 tendencies of the chalquoque and other fish. The other fish which 

 we sent up were rather too delicate to suit the conditions with which 

 we had to contend. We found many of them dead on reexamining 

 the container some days after the first distribution. This did not 

 occur with the life where it had any reasonable care. 



"We secured more than 1,000,000 of these fish, 80 per cent, of 

 which were lifes. We have records of the distribution of 857,561 

 fish. 



" Fortunately we feel certain that we have the question of yellow 

 fever completely dominated in Peru and we believe on the entire 

 Pacific coast of South America." 



Zoological Laroratory, 



University of Indiana. 



