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Heart.—Weighs 5 lbs. 12 ozs., measures 9" from base to apex, and the circumference is 20" at the base. The base
of the organ is surrounded by a gelatinous material of a reddish-orange colour, which runs down on either side of the
coronary vessels, anterior and posterior, more especially the former. External Surface of the Right Auricle is free
from, ecchymoses, but in the sulcus between it and the large vessels, there is a large extravasation 1"× ¾ ", as well as a
few small ones dotted around.
Right Ventricle presents in its lower half an extensive bulla, triangular in form and measuring 5" in length and
3" at its widest part. It is distended with fluid which appears to be pure blood, very dark in colour, of which about an
ounce escaped on incision ; posteriorly and to the right joining this bulla, is another large extravasation 2"×1½", very
dark in colour and lying under the visceral pericardium. There are also a few small ones dotted over the surface of
the ventricle.
Left Auricle.—Presents a few small ecchymoses, circular in form and dark in colour, about an eighth of an inch
in diameter on its external surface.
Left Ventricle.—Presents two large extravasations, one close to the anterior coronary vessels 2"×2", and a second
one extending from the base to the apex, situated a little posteriorly, but not so extensive as the former.
Internal Surface.—On section, the Right Auricle contains a little dark semi-fluid blood containing a few clots,
and there are a few sub-endocardial petechiæ ; the muscles look pale and somewhat fatty.
The Right Ventricle.—Wall hypertrophied, 13/16" in thickness, and the whole presenting a black appearance.
On clearing away the dark clots and semi-fluid blood, the inner surface is found to present a perfectly black appear¬
ance. The endocardial surface is occupied by numerous, irregular shaped, raised and smooth black eminences, which
for the most part run in lines from apex to base, varying considerably in size, from 2" in length and 7/8" in breadth to
small ones only 1/8" in diameter. The larger ones are, for the most part, found near the apex of the cavity, but are
especially well marked on the septum separating the pulmonary and tricuspid openings. These extravasations involve
two of the three cusps of the pulmonary valve in their lower halves, but the tricuspid valves are free.
The Left Auricle is pale, contains very little fluid-blood and a few small sub-endocardial petechiæ. The walls of
the left ventricle are exceedingly hypertrophied, measuring 1¾" in thickness ; it is, however, contracted and almost empty.
It presents the same form of sub-endocardial extravasations as described in the Right; here, however, the musculi-
papillares are principally involved. The bicuspid and aortic valves are healthy. Large and firm orange-coloured
coagula project from the openings of the large vessels, and can easily be drawn out.
The Spleen weighs 2 lbs. 5 ozs., is dotted over, especially at its widest part and apex, with dark brick-red coloured
patches, irregular in shape, varying from 1/3" in length to 1/8" in breadth, to mere specks. These spots are well marked
on both surfaces and lie directly under the capsule. The tissue of the organ is firm, and on section presents a healthy
appearance.
Right Kidney.— Weighs 1 lb. 3½ ozs., is pale, presents no petechiæ on its surface, but the superficial veins are some¬
what distended. On section, the cortical portion is pale ; the medullary is also somewhat pallid. The inner surface of
the pelvis presents several petechiæ, mostly circular in form, dark in colour, and varying considerably in size from a
split-pea to a small pin's head.
Left Kidney. —Weighs 1 lb. 4½ ozs., is somewhat pale, and the capsule strips easily. On section, the organ looks
somewhat pale, but there are numerous petechiæ. in the pelvis, as in the right kidney.
Liver.—Weighs 8 lbs. 6 ozs. The convex surface of the organ presents signs of old inflammation, is of a chocolate
colour, while here and there are patches more or less tinged a light-yellow. The anterior and posterior surfaces pre¬
sent small sulci about 1/6" in depth, and on passing the hand over the organ, large numbers of shot-like bodies can be
felt half buried in the tissues of the organ. These bodies are light-yellow in colour, vary in size and are hard and
gritty to the touch. On section of the organ, the tissue presents a yellowish tinge ; fluid blood runs from the cut ends
of the vessels, and there are some few caseous bodies imbedded in the substance of the organ, which are easily
nucleable.
The Abdominal Cavity.—The posterior surface of the diaphragm is also dotted over with extravasations, but they
are situated at some distance apart. The peritoneum, generally, is to a greater or less extent involved by these extra¬
vasations.
Stomach.—Externally, the organ presents nothing pathological. On section, the cuticular portion, for the most
part, is white in colour, but a portion of it is dotted over with very small yellow flakes, easily detachable. The villous
portion presents a large irregular patch somewhat rose-coloured, which appears to be denuded of its mucous membrane;
there is no ulceration, and the rose colour appears to be due to congestion of the sublying vessels. There is a raised
lump, about 1¾"×¾", lying 2" from the cuticular border, which is bard to the touch, and, on section of the mucous
membrane, is found to contain a dark blood clot, 7/8" in thickness and 1½" in length ; this is found to be lying on the
muscular coat.
Intestines.—Eight feet from the pyloric end of the stomach and therefore in the jejunum, there are several ulcers
occupying the seat of Peyer's patches; these are elongated ovals in shape, ¾" × 1/6". At the commencement of the
ileum, there are patches of congestion which occur at about every 3 or 4 feet for a considerable distance, and when near-
ing the termination of the ileo-cæcal-valve, two or three cicatrices are present, evidently of recent date.
Cœcum and Colon. — Contain partially digested food, and there are a few petechiæ scattered over the mucous mem¬
brane of the organ.
Rectum.-Healthy.
The only parasite found was one female specimen of Strongylus armatus.
Bladder.—Is distended with fluid and appears to have a considerable amount of blood extravasated into its walls.
On section, it contains about two litres of a dark sherry-coloured fluid, strongly acid in reaction and Sp. Gr : 1021. The
internal surface of the organ presents dark marbled patches, some almost black, others of a dark-red colour, but in¬
volving more or less the whole internal surface of the organ.
Brain.—On its surface, the veins are somewhat distended, the tissue is however firm and healthy looking.
On removing the organ from the skull, about 1½ ounces of fluid escaped. On section, the organ is pale and the lateral
ventricles are large and distended with fluid.
Remarks.—This animal was in fair condition, and after having been kept under observation for three days, during
which period no symptoms of disease were detected, it was inoculated with 1 c. c. of blood from Horse No. LXII,
which had been successfully inoculated from the rat. On the 22nd, the day following inoculation, there was slight
œdema about the thighs, which increased in extent until the 29th, but continued till death took place, although gradu-