106 SPIROCH^TES. 



SPIROCH^ETES IN VACCINE LYMPH. 



Bonhoff reported the presence of spirochaetes in 

 vaccine lymph, but other writers believe them to have 

 been artifacts. 



SPIROCHAETA REFRINGENS. 



(Schaudinn, 1905.) 



This spirochaete was found by Schaudinn in syphi- 

 litic lesions along with Sp. pallida (Fig. 82), but it may 

 occur apart from the latter in simple lesions of the 

 genital regions. It is broader than Sp. pallida, less 



FIG. 82. FIG. 83. 



FIG. 82. Spirochaeta pallida and Sp. refringens. Smear from 

 a syphilitic chancre; a, Sp. pallida; b, doubtful forms; c, Sp. 

 refringens. 



FIG. 83. Spirochaeta refringens. (Schaudinn.) 



sharply curled (Fig. 83), and stains more readily and 

 deeply. Its length is from 8 to 12 p and its breadth 

 about /*. It has terminal periplastic appendages, but 

 no undulating membrane (Levaditi) . Its body is said 

 to be flattened (?), and not round like that of Sp. 

 pallida. 



Some writers believe that Sp. refringens is the same 

 as S^. balanitidis (Rille, Kraus) . It may be the same 

 organism as was described by Donn6 in 1837 as Vibrio 

 lineola in syphilitic lesions. Eitner believes that more 



