C. Strickland and U. Merriman 
(7) The majority of fleas were found on the hinder parts of the rat, 
so that primary buboes, when they occur, might be expected to develop 
chiefly in the groin, on the assumption that fleas served as vectors. 
The species of rat-fleas. 
July 2—29 July 30—Aug. 2G Aug. 27—Sept. 23 Sept. 24—Oct. 21 Nov.—Dee. 1910 
(Strickland and Merriman) (Martin and Rowland) 
Chart II. 
