506 
WYATT JOHNSON. 
a week and losing flesh rapidly. Died to-day. Autopsy: Over 
parietal peritoneum a few pearly gray nodules. Omentum 
shows small, gray granulations with opaque centers. Spleen con¬ 
tains yellow white opaque nodules about the size of split peas. 
Microscopic examination of sections of the spleen shows a few 
tubercle bacilli in every field. 
April 24th. All the animals killed to-day. The control 
animals found to be free from tuberculosis. The two remaining 
guinea-pigs present similar conditions to the one which died on 
April 11 th, tubercle bacilli being found in the spleen in each 
case. 
The three rabbits all showed extensive tuberculous inflamma¬ 
tion in the regions of the iris. Tubercle bacilli were found in 
each case. Two of the rabbits showed caseous nodules in the 
lungs and spleen which contained numerous tubercle bacilli. 
I have reported this case in detail because I have not been 
able to hear of a similar one when the disease was limited in this 
peculiar manner. 
It is of interest, owing to the conclusive results of the inocu- 
lation experiments, when a most careful microscopical examina¬ 
tion had failed to detect tubercle bacilli. The apparently purely 
local nature of the lesions is also interesting. It is seldom that 
an opportunity of examining a valuable animal post-mortem is in¬ 
sisted on by the owner in such an obscure case. From the ap¬ 
pearance of the abscess wall it is probable that recovery would 
have been complete had the animal been allowed to live. 
Unfortunately, the suspicions of the owner were well grounded, 
and he lost in the following year a valuable cow from tuberculosis. 
In this case a large fungating, ulcerating growth, as large as an 
egg, projected from the vocal cords, and Dr. J. B. Page, of Am¬ 
herst, who examined the organs, was able to demonstrate masses 
of tubercle bacilli actually in pure culture in necrotic spots from 
the larynx and liver. 
It would have been preferable had I also made inoculations 
with material from the abscesses taken at the time of the autopsy 
under aseptic precautions. The fact, however, that of the ma¬ 
terial sent me (six separate samples) each gave positive inocula- 
