ETIOLOGY OF THE GERMAN SWINE PLAGUE. 
561 
u It appears to me necessary to call attention to the fact that 
the virus seems to have a predilection for the lungs in both cattle 
and swine, so that the existence of the pectoral form does not 
necessitate the assumption of the direct inspiration of the infic- 
iens into the respiratory tract. Severe affection of the intestinal 
tract is not only possible by the direct introduction of the infieiens 
into the intestines, but the haemorrhagic enteritis can also occur as 
a secondary lesion. Bollinger appears to me to have gone too 
far in assuming a special pectoral form, and the individual cases 
of gastro-enteritis as something of secondary importance, while 
Kitt has made a mistake in a contrary direction. 
“ I think it a matter of especial importance to call attention 
to the different deportment of swine in comparison with cattle in 
this disease. While cattle are very susceptible and soon succumb 
to the disease, whether the infieiens gain access to their organism 
by means of cutaneous wounds^ by the respiratory tiact, 01 by 
being fed with infectious material, swine have until now only 
become infected by means of sub-cutaneous inoculation, or 
through the introduction of the infieiens into the lungs, but not 
through the intestines. Caseous disturbances in the intestines of 
swine must, nevertheless, be looked upon as chronic intestinal 
lesions of the “ Wildseuche.”* 
“ Inoculation experiments upon horses have thus far led to 
the pure septic variety only. Kitt reports that, aside from an in¬ 
flammatory haemorrhagic oedema at the locus inoeuiationis, he has 
observed eccchyinoses in internal organs and hypostatic pneu¬ 
monia. 
“ The susceptibility of horses for this virus renders it very 
probable that the disease described by Schutz is 4 genuine equine 
pneumonia which strongly resembles the 4 Wildseuche ’ pneu¬ 
monia of swine—anatomically—is simply the pectoral form of this 
disease in the horse” 
* Such an assumption is by all means of too general a character. B. 
I ^ 
f This can be equally well seen in cases of septicaemia of traumatic origin in 
man or animals, especially in protracted and severely fatal cases of septic metritis, 
where quite another organism plays the etiological role.—B. 
