GENERAL CHARACTERS OF SPIROCILETES. 23 



The appearances seen in Sp. plicatilis are some- 

 what different (Fig. i). Here the organism appears to 

 be furnished with a series of rounded nuclei, distributed 



FIG. 7. Spirochseta balbianii; rod-shaped "nucleus." (Perrin.) 



fairly evenly throughout its length. The general out- 

 line of the spirochaete is also different, since it shows 

 not only the large undulations seen in Sp. anodonta 

 and balbianii, but also a series of smaller waves super- 

 imposed upon the others. It has no undulating mem- 



FIG. 8. Spirochaeta anodontae, showing irregular granules of 

 staining material. 



brane, as depicted in Doflein's illustration indeed, 

 judged merely by a comparison of this with the illus- 

 trations of Sp. balbianii, given by Perrin or Fantham, it 



