DISEASES CAUSED BY SPIROCH^TES 617 



by his ascitic-fluid-tissue method from phagedenic lesions on human 

 external genitals. It is probably a new species. 



Spirochaeta macrodentium. Cultivated by Noguchi; * is believed by 

 him to be identical with the spirochset? found in Vincent's angina. 



Spirochaeta microdentium. A similar organism with wide con- 

 volutions, cultivated by Noguchi from the tooth deposits chiefly in 

 children. It was grown on mixtures of sheep serum water and sterile 

 tissue in a way similar to that employed by him for other organisms of 

 this group. 



Spirochaeta calligyrum. Cultivated by Noguchi 2 from condylomata 

 is probably a new species. 



1 Noguchi, Jour. Exp. Med., xv, 1912. 



2 Noguchi, Jour. Exp. Med., xvii, 1913. 



