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, showing 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 1881 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- 
