REPRODUCTION. 



21 



Reproduction by arthrospores is recognized by many prom- 

 inent bacteriologists. It is seen especially in the coccus group. 

 Various definitions of this method of reproduction have been 

 given. According to Hueppe (and he is probably correct), 



FIG. 2. 



Unstained spores in slightly distended bacilli. (The spores are the light spots In 

 heavily stained bacilli.) (Park.) 



FIG. 3. 



FIG. 4. 



Spores in distended ends of 

 bacilli. (Park.) 



Unstained spores in centre of bacilli 

 arranged in chains. (Park.) 



they are larger and more resistant cells which take charge of 

 the perpetuation of the species in the guise of a resting-stage 

 or spore. Apparently the spore is evolved from the entire 

 germ, or represents a transformation of the germ into a spore. 



