HOG CHOLERA, OR SWINE PLAG0E. 
457 
; 
! 
Jein as pneumo-enteritis contagiosa, and that described by 
cjhutz of the Berlin veterinary school, as an infectious pneumo- 
ia, commonly known as “ schweineseuche,” and that which I have 
sscribed, and is known in this country as hog cholera or swine 
ague, are due to one and the same micro-organism! or whether 
lese two apparently so similar organisms, in their external char- 
iteristics, still differ in their pathogenic action sufficiently to 
Jcount for the enterical lesions in the American disease, which 
diutz does not mention having seen in Germany; though they 
>rrespond to those described by Schutz in all their chief 
isentials. 
It must, however, be mentioned that Prof. Schutz’s examina- 
3 ns were limited to a very small number of animals at the time 
ley were reported. On the other hand it may perhaps be 
slimed, or demonstrated, in the future that climatic influences 
ive intensified the action of the micro-organism in America, 
id that the disease was brought to this country by imported 
} gs. Again, it is a well known fact that the swine of this 
>untry and England are much finer bred than those of Ger- 
any, which ought to indicate that our swine are more suscept- 
le to the action of the micro-organism than those of Germany, 
id opens a large field for future research. Dr. Billings expects, 
ortly, to be favored with a supply of virus from Prof. Schultz, 
hich he intends to pass through a long series of American hogs, 
id thus demonstrate whether the virus increases virulence or 
icomes attenuated, and what lesions it produces. In two 
ttopsies which I made November 4th, in which both animals 
ed of oedema pulmonum et glotidis, the lesions of the liver, 
dneys, etc., were the same as usual, especially the lymphatic 
ands. The large intestines in both cases were free from any 
! cerative lesions. There were to be seen upon the small intes- 
ie a dozen or more yellowish red and blackish spots of variable 
mensions, which were hard to the touch, and on close examina- 
>n of several of them, they either penetrated the serosa or ap- 
oached to it. Upon cutting open the intestine, which in 
e case was of a pale lead color, and in the other stained 
How, numerous round worms from one inch to ten and 
