324 
W. SILBEKSOHMIDT. 
In his report of 1885, Salmon closely differentiates hog 
cholera from rouget, as much by the aspect and localization 
of the lesions as by the differences between the two microbes. 
On his side, Smith (51) studies the pleomorphism of the 
microbe of swine plague, and the confusion is increased after a 
new publication made in 1887, where Salmon and Smith pro¬ 
posed to call sivineplague the disease known until then as hog 
cholera , and call hog cholera that which they used to call swine 
plague. The sivine plague of Billings seems to be identical 
with the hog cholera of Salmon. 
To make things more confused, Salmon and Smith relate 
that in a porcine epidemy they found, upon fifteen cases the) 
examined, the microbes of hog cholera and of swine plague mixed 
in six cases; the differential characters that they give to the 
two microbes do not seem sufficiently distinct to impose con- 
viction. 
Then again, about the same time, Coinil and Chante- 
messe (18, 19) describe the characters of an epidemy which 
they named infectious pneumoententis of the pores of Gentilly, 
and study the biological and pathogenic propeities with the 
attenuation of the microbe which they consider as the specific 
agent of this disease. 
’ Rietsch and Jobert (30) found the same microbe in another 
epidemy at Marseilles, and Galtier (22) shows that this microbe, 
which was considered as specific for swine, is in certain con¬ 
ditions pathogenous for several other domestic animals. 
At last Bang, then Selander (48) study in Sweden and in 
Denmark an epidemy of swine, whose specific agent is a 
microbe different from that of the German epidemy, but 
identical, according to them, to the one of the American 
disease. 
To resume, among the diseases of swine called swine plague 
ox hog cholera, in America, schweineseuche in Germany, pneu¬ 
moenteritis in France, and swin pest in Sweden, which are those 
that must be identified—those that must be distinguished? 
This is a question which received the most contradictory 
answers when asked for, in the properties of the microbes, 
the nature or the localization of the lesions. 
