U. S. DEPARTMENT OF AGRICULTURE 



it 



Dr. James Carroll, U. S. V., member of the U. S. Army Yellow 

 Fever Commission. Dr. Carroll himself had yellow fever in the course 

 of the investigation, as the result of a puncture by the yellow fever 

 mosquito, and died a few years afterwards, his death being attributable 

 in a large measure to the disease and to his hard work during the inves- 

 tigation period. 



