ETIOLOGY OF THE GERMAN SWINE PLAGUE. 
563 
those of severe general infection. The autopsy reveals the pres¬ 
ence of an oedematous infiltrated condition of many parts of the 
subcutis, in which the bacteria are plentifully represented ; ec- 
chymoses are frequent in the sub-cutis of the neck and breast; 
cervical lymph-glands swollen, hard, and greyish-red on section. 
The respiratory tubes filled with a delicate reddish foam ; the 
mucosa of the larynx, trachea and large bronchial interspersed 
with numerous ecchymotic and striated haemorrhages; the lung 
very red, sometimes diffuse, and at other times circumscribed in 
characters, but without local pneumonia centres, as were seen in 
other animals. Kdtt reports lobular pneumonia in one case. 
Pleural cavity did not contain any effusion; isolated ecchymoses 
were distributed over the various extensions of the pleura. As 
in the larger animals, the spleen is not much swollen, as a rule ; 
it is of a brown or blue-red color, and sometimes shows ecchy¬ 
moses in the capsule. Liver and kidneys were often apparently 
unchanged, while in other animals the parenchyma was some¬ 
what clouded and small ecchymoses were to be seen under the 
capsule. The gastric and intestinal mucosa is generally much 
swollen, with occasional ecchymoses here and there, especially in 
the posterior intestine.” 
“ Rabbits do not invariably succumb to the inoculation. In 
such cases they do not seem to acquire any immunity, as the same 
animals-have succumbed to a second inoculation after a due time 
has elapsed. The manner in which the animals have been artifi¬ 
cially infected does not seem to exert any influence upon the se¬ 
verity of the tracheitis, or the gastro-enteritis. Pneumonia does 
not occur in rabbits after aspiration experiments with any such 
constancy as in cattle and swine after subcutaneous inoculation ; 
local subcutaneous oedema is, however, a constant occurrence in 
all inoculated animals. Inoculations in white mice give the pic¬ 
ture of a general septicaemia, but nothing especially characteris¬ 
tic. Kitt reports that in five pigeons which died from inocula¬ 
tion he observed haemorrhagic infiltration of the subcutaneous 
tissue at the point injected, and fatty degeneration and necrosis 
of the muscle tissue of the same character as in hen cholera.” 
This condition does not show that the diseases are the same, 
i 
