SYSTEMATIC DESCRIPTION OF SPECIES. 113 



57). In the illustrations given by Castellani Sp. per- 

 tenuis does not appear so regularly curled as is Sp. 



pallida. 



SPIROCH/ETA OBTUSA. 

 SPIROCH^ETA ACUMINATA. 



(Castellani, 1905.) 



Along with Sp. pertenuis Castellani found other forms 

 of spirochaetes which he called respectively Sp. obtusa a 

 thin delicate organism with blunt extremities and 

 Sp. acuminata, also very slender, but with tapering 

 ends. Wellman could not identify these varieties in 

 the lesions of yaws. Their nature and their relation- 

 ships to Sp. pertenuis are doubtful. 



SPIROCH^ETA LYMPHATICA. 



(Proescher, 1909.) 



Proescher and White found spirochaetes in two cases 

 of lymphadenoma ; the organisms were present in 

 enormous numbers in the .glands, being demonstrated 

 by Levaditi's silver method. A rhesus monkey was 

 inoculated with material from the glands, and developed 

 first a local nodule at the site of inoculation, and sub- 

 sequently further secondary nodules in distant parts 

 of the body. Spirochaetes were found in all the lesions. 

 A second monkey was successfully inoculated from the 

 first. The spirochaetes resembled Sp. pallida so closely 

 that Proescher at first believed the case to be syphilitic. 1 



We may here mention a spirochaete found by Moritz 

 in a case of severe anaemia and cancerous lymphangitis, 

 the organisms being present in the bone-marrow and in 

 the wall of the gut. With the spirochaetes in the latter 

 position were bacterial forms. The spirochaetes were 



1 It is possible that there was actually a syphilitic infection in 

 this case. 



