628 
D. E. SALMON. 
ment again and again that the germ of his swine plague was 
morphologically identical with the germ of Schweineseuche. 
The idea runs parallel with and is equally prominent with his 
other conclusion, that no such germ as the hog cholera bacte¬ 
rium could be found in the American swine plague. In one 
place he says: “ I emphatically declare that all Salmon’s 
assertions in regard to the specific microscopical appearances 
of any true and specific micro-organism in connection with 
hog cholera to be one continual series of ‘ unfounded state¬ 
ments ’ down to the issue of his report of 1886.” (L. c. p. 68.) 
And again, “ It matters nothing to the hog-raisers of the 
United States whether this germ was discovered by me on 
July 7th, 1886, or by Salmon on July i,or even in 1884.” (L. 
c. p. 69). 
Another remark is even plainer, as follows: “ Can anyone 
comprehend what could have induced Mr. Salmon to say (of 
the true swine plague germ, but which he falsly asserts to be 
the cause of a 'chronic pneumonia,’ report 1886), it is proba¬ 
bly identical with the micrococcus described in my report of 
1884, etc.” (L. c. p. 392). 
We see by the quotations which have been made that he 
not only considered the germ which he then had as identical 
with the Schweineseuche germ, but that he accepted the de¬ 
scriptions of the Bureau swine plague germ as applying to the 
germ described in his report. While he held that there was j 
but one swine plague in the United States, he insisted that 
this was caused by an organism morphologically identical with 
the micro-organisms of Schweineseuche, hen cholera, rabbit 
septicaemia and the Bureau swine plague (see also 1 . c. pp. 
293 and 332), and he denied the existence of a disease pro¬ 
duced by the hog cholera germ. 
Now what was the effect of Frosch’s report upon this 
position? Billings and the Committee on Intelligence and 
Education claim it as an endorsement, and if we accept it as 
such, the query suggests itself, How many such endorsements 
can a writer have and survive ? Billings and Frosch claim 
that there is but one swine disease in this country which 
should be called a plague—the former says it is caused by the 
