22 SPIROCILETES. 



by any spiral thread. He regards the spirochaete as 

 made up of a series of chambers, in which these rod- 

 shaped nuclei lie, and thinks that the increase in length 

 of the spirochaete is effected by a multiplication of these 



FIG. 5. FIG. 6. 



FIG. 5. Spirochaeta balbianii, showing nuclear (?) bands. 

 (Perrin.) 



FIG. 6. Spirochseta anodontse, with irregular masses of staining 

 substance. (Keysselitz.) 



chambers, taking place especially at the ends. In 

 some cases the staining substance appears as a central 

 continuous band or rod, running along the middle of 

 the body of the spirochaete (Fig. 7). 



