232 
TODD AND WOLBACH. 
He was consequently killed. The autopsy was commenced four hours 
later. 
Autopsy: There are no edematous areas. The fat is scanty. Muscles 
are normal in color. There is no fluid in the abdominal or thoracic 
cavities. There is a large, verminous aneurism, filled with recent clot, 
in the superior mesenteric artery. There are pin-point petechias over the 
surface of the spleen (weight, 2| pounds) ; they are present on no other 
serous surface. With the exception of a few fibrous tags on the upper 
surface of the liver, all the organs, both abdominal and thoracic, are normal 
in appearance. Some of the lymph glands in the mesocolon are 
enlarged and edematous ; the glands of all the other groups, both internal 
and external, are normal in appearance. 
An examination of the records of the inoculation of these 
horses yields the following facts : 
The inoculations of blood were followed in every instance 
by a rise of temperature in from eight to twenty-six days 
(average fourteen and one-half days). 
It is interesting to note that a distinct rise in temperature 
occurred in Horse III. in fifteen days after it had received 
into its jugular vein a large quantity of blood from Horse V. 
Horse V. received its infection from the Grey Gelding ; 
Horse III. was first inoculated from Horse I., which had 
received its infection from the Black Gelding ; when it was 
first inoculated there was a distinct rise in its temperature. 
It is interesting that the infection, originating from the Grey 
Gelding, was. able to produce a rise in temperature in an 
animal which had already reacted to an inoculation with 
blood which derived its infection from the Black Gelding. 
The disease led to the death of four horses in about four 
months after their inoculation ; one died of pneumonia nine 
months after inoculation. 
The course of the disease in these horses and the appear- 
ances observed at the autopsies were not dissimilar from 
those which are described in Swamp Fever. 
B. Other animals. — Four guinea-pigs, two mice, nine 
rats, two rabbits, ten dogs and puppies, two kittens and one 
sheep were inoculated at different periods from the two 
