506 GEORGE F. REDDISH AND LEO F. RETTGER 



strains which had been isolated by recently devised methods, 

 that the spores of this organism are round. 



The writers have employed the strains isolated by Sturges, 

 in their morphological, biochemical and cultural studies of C. 

 putrificmn, and have corroborated the earlier observations of 

 Rettger and those of Sturges and Rettger, particularly the 

 points regarding morphology. In all of the stock strains ex- 



J'*, 



k 



%r 



Fig. 1. Showing Rods, Ch.^ix.s and Char.^cteristic Drum Sticks of 



C. putn'ficum. Incud.\ted3 Weeks at 37°C. in Egg-JNIeat Medium. 



FucHSiN Stain. X 1000 



amined (four) the microscopic appearances of the organism were 

 the same. The bacilli were long and slender, frequently slightly 

 curved, and in the sporulated condition possessed a terminal, 

 round spore which in the fully developed drumsticks appeared 

 very large as compared with the thickness of the rods. The 

 rods were as a rule longer and much more slender than those of 

 C. tetani grown on the .same medium (tig. 1). Colonies also are 

 characteristic (fig. 2). 



