SYSTEMATIC DESCRIPTION OF SPECIES. 105 



ing more readily, in the expectoration of a patient suffer- 

 ing from heart-disease. 



SPIROCH^TA MICROGYRATA. 



(Loewenthal, 1906.) 



Loewenthal found spirochaetes in the discharges 

 from the surfaces of ulcerated cancers. They stained 

 more readily than Sp. pallida. Long individuals meas- 

 ured 5 to iifj. by i^ to 2//; and smaller 

 specimens 2^ to 6/j. by & to //. The small 

 forms showed from four to twelve curls, 

 with a wave-length of //, or half that of 

 Sp. pallida. Along with the spirochaetes 

 were rod-shaped and bent sausage-shaped F . IG - 8l - 

 bodies. Figure 81 shows one of these f P ukerated 

 organisms as depicted by Schaudinn. 



Krienitz found Sp. microgyrata in cases 

 of cancer of the stomach, and noted that the form of the 

 organism changed with changing conditions, the altera- 

 tions involving both length, thickness, and arrangement 

 of curls. He therefore doubts the possibility of distin- 

 guishing spirochaetes by their morphological characters 

 alone. 



Calkins identified the spirochaetes found by Gaylord 

 in mouse-cancer as a variety of Sp. microgyrata (see 

 page 98). 



Hoffmann found spirochaetes in ulcerated cancers 

 along with fusiform bacilli. 



SPIROCHAETES IN SMALL-POX. 



Sakurane found spirochaetes in the lesions of a patient 

 suffering from small-pox, both in the contents of the 

 pustules and in the tissues below these. They were 

 long and slender, and showed numerous regular curls; 

 forms with irregular curves were also seen. 



