144 MICROBES, FERMENTS, AND MOULDS. 



probable that we have only two forms of the same 

 microbe, for the bacillus in Klein's culture at first 

 resembles Bacterium termo, in the form of an 8, before 

 it is elongated into rods. 



Pasteur has succeeded in making cultures of 

 microbes in the figure 8. He has inoculated swine 

 with the attenuated form, after which they have been 



Fig. 70. Swine fever: section of a lymphatic gland, showirg a blood-vessel filled with 

 microbes (.much enlarged: Klein). 



able to resist the disease, so there is reason to hope 

 that in the near future this new vaccine, containing 

 the attenuated microbe, may become the safeguard of 

 our pig-sties. 



V. OF SOME OTHER DISEASES PECULIAR TO DOMESTIC 

 ANIMALS. 



An epidemic which raged in Paris in 188 L was 

 called the typhoid fever of horses, and was fatal to 

 more than 1500 animals belonging to the General Om- 

 nibus Company in that city. This disease is also pro- 



