114 SPIROCTLETES. 



from 2 to 6/1 in length, and had from three to ten curls. 

 They differed from S^. obermeieri in their appearance, 

 being plumper and more compact (gedrungen) ; they 

 had also thicker ends. 



SPIROCH^TA ABORIGINALIS. 



(Cleland, 1909.) 



Spirochaetes were found by Wise in cases of the de- 

 structive local lesion called ulcerative granuloma of 

 the pudenda and have been described by Cleland and 



FIG. 90. Sp. aboriginalis and bacteria. (Bosanquet.) 



by Bosanquet (Fig. 90). The organisms are about 12/1 

 in length, ranging from forms a few microns only in 

 length to long forms attaining 18 or 20^. They are 

 irregular in their curls, thus being clearly distinguished 

 from Sp. pallida, and from Sp. pertenuis, as seen in the 

 tissues. They closely resemble, however, the pictures 

 given by Castellani of Sp. pertenuis as found in the 

 secretion of yaws. 



The spirochaetes exist in the tissues along with bac- 

 terial forms, their relationship to which has already 

 been discussed (see page 58). 



SPIROCH^TA INTERROGANS. 



(Stimson, 1909.) 



Schaudinn and also Novy suggested that yellow fever 

 might be due to the action of a spirochaete, but failed to 

 find such organisms in cases of the disease. Stimson 

 has recently, by Levaditi's method, found in the kid- 

 neys of one such patient spirochaetes (?) which often 



