PATHOLOGICAL PHYSIOLOGY. 
23 
that of the pulmonary mucosities produce it. There then is the rabid 
virus. This explains the variations of action in the saliva of mad 
dogs. 
3d.—I have remarked that the saliva of mad dogs, if it does 
not give hydrophobia, brings on death in the inoculated animals, 
in producing serious local lesions, such as large cutaneous sloughs. 
These accidents prevented me going on with my experiments. 
From fifteen inoculations I had seven suppurations, which 
proved fatal in four. It seems then that rabid animals possess in 
their tissues septic properties besides the hydrophobic condition. 
4th.—The saliva of the mad dog filtrated on plaster proves 
harmless, while the part that remains on the filter gives rabies. Jt 
is then quite probable that rabies is due to a microbe. 
5th.—The buccal saliva of the mad dog, like that of the healthy 
animal, transforms starch into glucose .—Gazette Medicate. 
UPON HOG CHOLERA. 
By M. Pasteur. 
The following extract from a letter of the author upon that, 
disease was presented to the Academy of Sciences of Paris : “In 
my name and that of one of my colleague, Mr. Shuillier, I have 
the honor to briefly present you a few new facts relating to that 
disease of swine.” ****** Our investigations are 
summarized in the following conclusions: 
1. —That disease is produced by a special microbe, easily cul¬ 
tivated outside of the bodies of animals. It is so delicate that it 
may evade the most attentive observation. The microbe of 
chicken cholera resembles it the most. Its form is also that of a 
figure 8, but finer and less visible. It essentially differs from it 
in its physiological properties. Without action upon chickens, it 
kills rabbits and sheep. 
2. —Inoculated pure to the pig, in almost inappreciable doses, 
it rapidly produces the disease, and kills with the habitual char¬ 
acter of spontaneous cases. It is more fatal in improved 
breeding. 
3. —Dr. Klein, in 1878, published along work on the disease, 
