SPECIAL CHARACTERS 



27 



for their life they undergo various changes of size and shape, 

 none of which are very characteristic except the so-called 

 spore formation. By this is meant the concentration of the 



FIG. 5. Capsule stained by Hiss's method. Rhinoscleroma bacillus. 

 X 1000. (Thro.) 



**>" 



.*- 



% ,- 



FIG. 6. Bacilli showing one polar flagellum. (Park.) 



vital powers and some of the physical constituents of the 

 bacterial cell within a very small, homogeneous, highly 

 light- refractive body which is resistant to deleterious agencies 

 and which may bear little or no resemblance to the parent 



