624 
D. E. SALMON. 
istence. It should be remembered that the Commission of 
Inquiry and Prof. Welch had both expressed their conclusion 
that our description was correct and sufficient for the iden¬ 
tification of the germ. Now what does Frosch say? ; 
He says: “We will hence briefly review Salmon’s state¬ 
ments bearing in this direction, in order to prove how far the 
same coi 1 espond, free from objection, with the criteria set up 
by Koch for an infection cause. 
“ If the reports of Salmon concerning the hog cholera 
bacterium are next viewed from this standpoint, then a suffi- . 
cient characterization, morphologic as well as biologic, of the 
same is given which allows no doubt to arise concerning its 
identity.” 
Again he writes: “ A culture of this hog cholera germ was 
the object of a short confirmatory examination in the Hygi¬ 
enic Institute, of Berlin, in the year 1888, by v. Esmarch, and 
in this it could be determined that the same answered in the 
main with Salmon’s statements, as also that this bacterium 
corresponded with no cause of infection in pigs known [in 
Europe, D. E. S.] at that time.” I 
How does it happen that unequivocal statements like this 
on points of prime importance—should have been passed 
over in silence by the Committee on Intelligence and Educa¬ 
tion, while every effort was made to give the impression that 
the Bureau reports had been shown to be unreliable ? I 
At the meeting of this Association in Baltimore in 1888, I 
read an extract from a letter received by me from Koch/in 
which was given the results of von Esmarch’s examination of 
the culture of hog cholera germs which I had sent to Koch 
for his opinion. Billings quotes from that letter in his report, : r 
and his remaiks on it show how completely wrong he was on 
the whole subject at that time. This is what he says : | 
“ What does Koch’s evidence show ? 
“ Nothing but that some unknown germ was sent him that 
had some kind of effect on ‘ mice and guinea pigs,’ but not 
that it had any on hogs. It does show that it does not occur 
in any swine disease known to him as occurring in Europe, 
and all the evidence quoted by me goes to show that the so- 
