XV] ANAEROBIC BACILLI 401 



bacilli in active lymph and their inability to grow in the 

 ordinary culture media. 



L. Pfeiffer (^Die Profozoen ah Kratikheitserreger, Jena, 

 1890) describes the presence of coccidia in the epithelium 

 in variola, vaccinia, varicella, herpes zoster, and other 

 vesicular eruptions. P>om his description and the illus- 

 trations given by him (Figs. 28-34, pp. 88-99) he has no 

 doubt that they occur in the substance of the epithelial 



Fig, 160. — From a similar Speci.men as the precedikc figure, 



X 1000. 



cells ; that here they (the coccidia) multiply by division, 

 and form in their interior the spores. It can be easily shown 

 that certain peculiar bodies do occur in the epithelial cells 

 in these affections, which bodies are not the typical ordinary 

 nuclei, and which can be brought out by various dyes, and 

 thereby can be differentiated both from the cell-protoplasm 

 and from the ordinary cell nucleus. In sections through 

 the vesicles of sheep-pox, as also of human small-pox, stained 



D D 



