cvi
Heart weighs,5 lbs. 10 ozs. The external surface of the organ is free from sub-pericar-
dial ecchymoses with the exception of the right auricle which is the seat of numerous small
circular spots of a dark-purple colour. On section—all the lining membranes of cavities
are found to be more or less blood-stained, but the Right Ventricle, in addition, presents a
few small sub-endocardial extravasations. The valves present a healthy appearance.
The abdominal cavity contains forty ounces of a dark, blood-stained fluid, but on
microscopical examination the Surra hæmatozoon was found to be absent from it.
Liver is small, weighs only 7 lbs. 6 ozs. The capsule presents signs of old perihepatitis,
but on section the tissues appear healthy.
Spleen weighs 1 lb. 15½ ozs. There are numerous small sub-capsular petechiæ of a
bright-red colour. On section—the tissues are dark in colour, but firm in consistency.
Kidneys.—Both organs are of the same weight, 1 lb. 8½ ozs. There are no petechiæ
visible on the cortical surface, and on section the tissues present a normal appearance.
Stomach.—The organ is somewhat distended with semi-digested food. The cuticular
portion is healthy in appearance. The mucous membrane of the villous portion presents a
healthy appearance, but there is a raised tumor of the size of a walnut lying at the fundus of
the organ half an inch from the line of demarcation. On section, the tumor contains
numerous specimens of the Spiroptera megastoma.
The Small and Large Intestines present a healthy appearance and although carefully
looked for, no parasites were found.
Bladder contains 22 ozs. of a dark, blood-stained viscid fluid, Sp. Gr. 1,034. The mucous
membrane of the organ is healthy in appearance.
Remarks.—This animal, a Black Australian Mare, aged 8 years, was purchased on the
22nd December 1888; was observed to be ailing on the 15th December 1892, and the
hæmatozoon was discovered in the blood on the 18th December. The animal came under
observation at the Laboratory Hospital on the 21st December and was then in fair condition
although several claret-coloured extravasations were present on the membranæ nictitantes,
and there was some œdema about the fetlocks. On the following morning the hæmatozoa
were numerous in the blood, but as on the following day they were decreased in number, a
treatment consisting of Arsenic in the form of Liq. Arsenicalis was commenced and continued
until the morning of the 17th February 1893, the 67th day of the disease. The hæmatozoon
was present in the blood for six days out of a period of seventy-one.
The temperature on the evening of the 17th December 1892 was 37.2°C, but by the
following morning had risen to 40.3°C. and remained elevated until the evening of the 20th
when it fell, and was 37.6°C. on the morning of the 21st. It again rose and attained normal
limits on the 26th. From this latter date until February 24th the temperature only reached
39°C. on one occasion, viz., on the evening of 28th January 1893.
The urine on the 25th December was found on microscopical examination to contain a
few blood casts and numerous Carbonate crystals, and a few days later a small quantity of
bile pigment was discovered. On the 17th January 1893 a few granular casts were found in
addition to the blood casts, and these remained present during the whole duration of the
case. Albumen was found varying from a trace to 1/33rd on three occasions only, viz.,
on the 6th, 9th and 13th of January 1893, but on the 25th and 26th of February, the clay
previous to and that on which death occurred, the urine suddenly became dark-red in
colour, but on microscopical examination no casts or blood corpuscles could be discovered.
Death occurred on the 26th February, the 71st day of the disease. Two Guinea-pigs were
inoculated with 0.5 c.c. of blood taken from the Jugular Vein on 17th February, the hæma-
tozoon at the time of inoculation having been absent from the blood for 55 days.
RECORDS OF URINE.
Animal, Black Australian Mare No. LXXXIL
Date, December 1892. Disease, Surra
naturally contracted,
Date.
1892.
December 24 ...
25 ...
26 ...
27 ...
28 ...
29 ..
30 ...
31 ...
Quantity.
...
...
...
...
...
...
...
...
Colour.
Turbid, viscid, yellow.
Turbid, viscid, greenish-
orange.
Turbid, viscid, orange.
Turbid, viscid, brown.
Turbid, viscid, orange.-
Turbid, viscid, greenish-
orange.
Do.
Turbid, viscid, orange.
Re-action.
Alkaline. ...
Do. ...
Do. ...
Do. ...
Do. ...
Do. ...
Do. ...
Do. ...
Specific
Gravity.
1,032
1,030
1,032
1,038
1,031
1,031
1,032
1,032
Albumen.
Nil
Nil
Nil
Nil
Nil
Nil
Nil
Nil
phos-'
phates.
Nil ...
Nil ...
Nil ...
Nil ...
Nil ...
Nil ...
Nil ...
Nil ...
REMARKS.
A few blood casta and large number of
calcium carbonate crystals.
Few blood casts, numerous calcium car-
bonate crystals.
Do.
do.
Do.
do.
Trace of bile pigment; calcium carbonates,
a few oxalates; few granular casts.
Do.
do.
Bile pigment absent; calcium carbonates.