clvi
The hæmatozoa are swarming in the blood. Temp. 1 P.M. 40.8°C.
Urine.—Cloudy, orange in colour, Sp. Gr. 1,016, acid, no albumen.
Temp. 5 P.M. 40.8°C. P. 84. R. 40.
6th—The animal is very much weaker, and all the symptoms aggravated, but the ani-
mal continues to eat slowly.
Temp. A.M. 39.4°C. P. 84. R 25.
The hæmatozoa are swarming in the blood. Temp. 1 P.M. 40.6°C. The urine is clear
yellowish-red in colour, Sp. Gr. 1,015, acid, no albumen.
Temp. 5 P.M. 41.2°C. P. 92. R. 60.
7th.~ The animal is as weak as it can be, and death will take place during the day.
The slings have been removed. Death took place at 3 P.M. Temp. A.M. 39.8ºC.
The hæmatozoa are still swarming in the blood.
AUTOPSY.—The body is emaciated, and the extremities swollen and œdematous.
Thorax.—There is no fluid in the pleural cavities and there are no pleuritic adhesions.
The lungs present a reddish-pink colour, and the apices are the seat of a localized em-
physema. There are no extravasations of blood on the surface of the organs, or caseous
nodules. On section the tissues appear healthy.
Pericardium contains three ounces of an orange-coloured fluid in which the hæmato-
zoon was not discovered microscopically.
Heart weighs 5 lbs. 3 ozs. after removal of the blood and clots. Externally the base
is surrounded by yellow-coloured gelatinous material, but there are only a few petechiæ
scattered over its surface. The muscular surface of the cavities is free from ecchyinoses.
Internally all the cavities are free from pathological lesions, with the exception of the left
ventricle, and this presents a few small sub-endocardial extravasations, several involving the
bases of the musculi-papillares.
Liver shows signs of old perihepatitis and a few yellow concretions small in size dotted
over the surface of the organ. On section it appears normal and but few yellow bodies are
seen invading the tissues.
Spleen weighs 2 lbs. 8 ozs., is enlarged but firm. There are numerous petechiæ in-
volving the capsule.
Stomach.—Is partially distended with semi-digested food. On section the cuticular
portion is normal; the villous with the exception of its containing a tumor, the work of
the "Spiroptera megastoma" also presents a healthy appearance.
Kidneys.—The right weighs 1 lb. 2½ ozs.; the left 1 lb. 1 oz. The capsules strip easily
from both and present a perfectly normal appearance. On section the organs present a
healthy condition.
The small intestines are perfectly healthy.
The large intestines
do.
do.
Remarks.—This animal was under observation from the 2nd to the 14th of June, upon
which date having in the meanwhile showed no symptoms of disease, it was subcutaneously
inoculated on the left shoulder with 5 c.c. of blood taken from the Internal Jugular Vein of
horse No. LXV (naturally acquired Surra), containing a few Surra hæmatozoa. There was
slight swelling, the size of a marble at the seat of inoculation on the morning of the second day.
48 hours after the injection of the blood this swelling increased considerably in size and tension
up to the 20th June 1892 and continued to do so until the morning of the 20th. On the
morning of the 21st the tumor was found to have lost its tension and become soft, a sure
sign that the hæmatozoa had become generalized in the blood, which was verified on
microscopical examination. The first period during which time the hæmatozoa were very
numerous and afterwards swarming in the blood lasted for five days, the temperature oscil-
lating between 37.6ºC and 4l.lºC. An interval of three days then occurred, during which
the hæmatozoa were numerous, and this was followed by an increase in their number and
again by a decrease; they then became very numerous and swarming and thus continued
until death, the temperature varying between 39.1ºC and 41.2°C.
The points to be observed in this case are :—
(i). The first appearance of the swelling at the seat of inoculation forty-eight hours
after the injection of the blood containing only a few hæmatozoa.
(ii). The increase in size accompanied with increased tension of the tumor until
the morning of the 20th June, followed on the next day by loss of tension and decrease
in size of the swelling, and the presence of very numerous hæmatozoa in the blood.