392 



BACTERIOLOGY. 



sition to the opinion that it possesses this peculiarity. 

 Certain observers claim to have demonstrated spores in 

 the bacteria by particular methods of staining ; but this 

 statement can have but little weight when compared 

 with the behavior of the organism when subjected to 

 more conclusive tests. For example, it does not, at 

 any stage of development, resist exposure to 3 per cent. 



FIG. 66. 



Bacterium mallei, from culture. 



carbolic acid solution for longer than five minutes, nor 

 to 1 : 5000 sublimate solution for more than two min- 

 utes. It is destroyed in ten minutes in some experi- 

 ments, and in five in others, by a temperature of 55 C. ; 

 and when dried it loses its vitality, according to dif- 

 ferent observers, in from thirty to forty days ; all of 

 which speak directly against this being a spore-bearing 

 bacillus. 



It is not motile, and does not therefore possess 

 flagella. 



