278 
REPORTS OF CASES. 
highly congested on mucous surface and intensely infiltrated 
between mucous and muscular coats, with the same jelly-like 
matter common to Nos. i and 2. The colon presented a 
marbled or spotted appearance over its entire serous surface, 
so thickly was it studded with petechial spots. The mucous 
surface presented a blackened, disorganized appearance. 
Mesentery intensely congested and hyperamic spots over en¬ 
tire surface of peritoneum. Liver hard, hyperamic, very friable, 
and much enlarged. Capsule easily torn away. Liver when 
cut across presented a dirty yellow appearance, and left a 
yellow exudate on the knife. Spleen enormously enlarged 
and engorged with black liquid blood which showed a tenden¬ 
cy to gravitate to either end when the other end of the organ 
was elevated. No means were at hand for weighing, but this 
spleen would certainly weigh twenty pounds; it measured 
twenty-two inches across the base, thirty-one inches long and 
six inches thick. Kidneys, left one congested, right normal. 
Bladder empt}^. Hyperamic patches over peritoneum. 
Thorax. — Lungs thickly studded with petechial spots, 
which covered pleura as well, large patches of lung tissue col¬ 
lapsed, and all large bronchi filled with foamy blood. 
Heart .—Pericardium presented many congested spots, and 
the contained liquid was very abundant and quite bloody ; 
cardiac vessels engorged with liquid blood, and heart most in¬ 
tensely congested in both cavities, and about auricles. Struc¬ 
ture very friable, small amount of liquid blood in both sides of 
heart; no clots anywhere. Intense congestion and infiltration 
in mediastinum. 
Brain .—All vessels much engorged with liquid blood, and 
a few petechial spots on surface. 
The post-mortem appearances of this animal were much 
more violent than any of the others ; he was sick about sixty 
hours. Other post-mortems were made, which presented 
practically the same lesions as above. 
I had no microscope at hand with which to make examina¬ 
tions of Nos. i and 2. Microscopic examinations of the fresh 
blood from spleen of No. 3, with a power of 350 diameters, 
showed numerous, straight, rod-like bacilli, motionless, with 
