230 
TODD AND WOLBACH. 
normal; its pulse rate is about 45, it weighs 1,030 pounds, and it has 
shown no sign of disease. 
November 5, 1910: Yesterday the mare seemed in good health; early 
this morning she was noticed to be breathing quickly, and at about 
1 1 o'clock she was down and died suddenly. The autopsy was commenced 
six hours later. 
Autopsy : There were no edemas and little fat ; the muscles were normal 
in color; the peritoneal and pericardial cavities contained no fluid. Over 
the lower part of the colon, and over the upper surface of the liver, there 
were numerous, old, fibrous tags. With the exception of the spleen 
(weight, 2| pounds) all the peritoneal organs were normal in appearance. 
The capsule of the spleen was covered with very numerous pinhead pete- 
chiae. The heart was normal. The left lung was normal ; the whole of the 
lower lobe of the right lung was consolidated. The abdominal and lym- 
phatic glands were normal. Cause of death : Pneumonia. 
Horse IV, (Red Gelding). — Weight, 775 pounds; age, 26 years. This 
animal was inoculated intraperitoneally on March 17, 1910, with 40 cubic 
centimeters of blood from the Grey Gelding (temperature steadily normal) . 
The temperature remained unchanged for two weeks, when it rose to 
103.2*' F. It then fell and remained between 100° and loi^ F. for five 
weeks save for one period when it rose, for three days, to 103*' F. After 
that the temperature was rather irregular, but it never went above loi^ F. ; 
pulse 45. No edema or other gross clinical signs were seen in this ani- 
mal at any time. There was distinct anemia; red cells, 5,100,000; white 
cells, 6,900. On the 21st of July 860 cubic centimeters of blood were trans- 
fused into it from Horse V. (on the previous day the temperature of this 
animal had been up to 103.5° F.). No rise in temperature followed the 
transfusion and the animal seemed to be as well as usual and ate with its 
usual appetite. On July 31st it was down and unable to rise ; it struggled 
continually and perspired very freely ; it was killed and an autopsy was 
commenced at once. 
Autopsy : (a) Gross appearances. — Rigor mortis came on very quickly. 
The muscles seemed to be normal. The only edema found is a light infil- 
tration of the subcutaneous tissues on the side on which the horse lay 
before death. There is no excessive fluid in the peritoneal cavity; it con- 
tains a few filariae (Filaria papillosa). The pleural cavities are normal. 
Heart: The epicardium, heart muscle and endocardium are normal. On 
the mitral valve there is a small, sub-endocardial extravasation of blood 
and, on its auricular surface, there is an old firm vegetation. The great 
vessels are normal. Lungs: Normal. Spleen: The spleen is not enlarged. 
The surface is thickly covered with small irregular, petechial hemorrhages ; 
these are particularly marked on the lower portion of its diaphragmatic sur- 
face. Liver : Seems normal in size and substance. Kidneys : Are some- 
what injected but otherwise normal. Pancreas: Normal. Genito-urinary 
