THE STRUCTURE OF BACTERIA. 



Fig. SCladothrix dichotoma (after Zopf) A, Branched filament with 

 spiral branches more (b) or less (a) twisted. B, Screw forms 

 one end of which (a) is more twisted than the other. C, Long 

 spirochaete-like branch with numerous coils and twists. D, a 

 piece of a branch with sharp angled spirals, and one with very 

 slight turns. E, Screw forms : a, unsegmented, b, with the ap- 

 pearance of segmentation into longer and c, into shorter seg- 

 ments. F, Spirochaete forms : a, unsegmented, b-d, schematic 

 representation of segmentation, 6, into long, c, into short rods 

 and d, into cocci. 



whether the form under observation is merely 

 a chain of single rod-like or spiral cells, or is a 



