1889.] Schzveine-Seuche and the " Sivine Plagued 897 
the same disease which was caused by the Schweine-seuche 
bacteria. We may also conclude that the multiple inflamma- 
tion of the lungs, which was exceptionally and only present 
in the cases investigated by Schutz, is not an integral element 
of the pathological picture of Schweine-seuche, and that the 
hypothesis of that observer has been proven. Inflammation 
of the lungs occurs in this pest, as it presents itself here, 
probably much more frequently than caseous enteritis, as in the 
five cases examined by me it was only present in one, and there 
as a secondary local infection. To this assertion I find myself 
the more justified in that at the time I did not know of the 
identity between the caseous enteritis and Schweine-seuche. I 
had met with the first much the more frequently, without its 
being complicated with pulmonary lesions." 
Let us consider this evidence as unprejudicedly and carefully 
I. What have we in favor of the identity of the disease studied 
by Peters and that investigated by Loeffler, Schutz, Bleisch, and 
Fiedeler ? 
Nothing but that most unreliable of all evidence, the presence 
of a morphologically (apparently) identical micro-organism. 
This kind of evidence is the most misleading and dangerous 
which can possibly be relied upon. 
Let us suppose that it were possible to infect five hogs with 
the germ of ether Texas Fever, as it is called, the hen-cholera, 
rabbit-septicaemia, the weasel pest, or the corn-stalk disease, all of 
which are ovoid and belted bacteria, morphologically not safely 
to be diffentiated from those of the Schweine-seuche — what then ? 
But the germs of the last disease have no movement, and do 
not grow on potatoes, say some ! 
Well, what then ? 
There is no evidence that Peters made any such examination 
of a culture, as he certainly would have mentioned it. 
2d. What have we against any such identity between the di- 
sease investigated by Peters and the Schweine-seuche ? 
In the Peters case we have four hogs with no pulmonary- 
lesions whatever in comparison with over 60 examined by the 
