Morphology 



583 



The Spirillum of Denecke (Spirillum Tyrogenum) 



Another organism with a partial resemblance to the cholera spirillum was 

 found by Denecke* in old cheese. 



Fig. 243. — Spirillum of Denecke, from an agar-agar culture. X 1000 (Itzerott 



and Niemann). 



Morphology. — Its form is similar to that of the cholera spirillum, the shorter 

 individuals being of equal diameter throughout. The spiral forms are longer 



Fig. 244. — Spirillum of Denecke; gelatin puncture cultures aged forty-eight and 

 sixty hours (Shakespeare). 



than those of the Finkler and Prior spirillum, and are more tightly coiled than 

 those of the cholera spirillum. 



*" Deutsche med. Wochenschrift," 1885. 



