﻿ILLUSTRATIONS. 



(Photomicrographs by Mr. Charles Martin, Bureau of Science, Manila, P. I.) 



Plate I. 



Fig. 1. Spirochwta refringens (Class A) giving appearance of transverse divison 

 nearly complete; also an unidentified spirocharta of Class B. (1,000 

 diam. ) 



2. Spirochwta refringens (Class A) showing signs of transverse division. 



(1,000 diam.) 



3. Spirocliaeta of Class B, one of them showing a forked end suggesting 



longitudinal division. (1,000 diam.) 



4. Twisted examples of Class B. (1,000 diam.) 



5. Spirochseta of Class C, which approaches Treponema pallidum, side by 



side witn Spirochwta refringens. (1,000 diam.) 



6. Spirochseta of Class C, undergoing division. Separation incomplete. 



(1,200 diam.) 



563 



