lxxviii
The cavity of the pericardium contains 4 ozs. of a turbid, orange-coloured fluid.
Heart.—Is enlarged and weighs 6 lbs. ½ oz. There is no deposit of jelly-like exudation
round the base, and the external surface of the organ is free from sub-pericardial ecchymoses.
The right side of the heart is dilated, the left side being in a condition of semi-contraction.
On section.—The cavities on the right side of the heart are filled with dark fluid blood,
the endocardial lining of both is stained a yellow colour, but there are no sub-endocardial
extravasations. The tricuspid and pulmonary valves present a healthy appearance.
The cavities on the left side are empty ; the endocardial linings are also stained yellow
in colour, but there are no sub-endocardial extravasations. The mitral and aortic valves
present a healthy appearance.
Abdominal cavity.—Is free from fluid.
Liver.—Is normal in size and weighs 10 lbs. 4 ozs. The anterior surface presents
signs of old perihepatitis, but there are no sub-capsular petechias or calcareous bodies.
On section.—Dark fluid blood exudes from the cut surfaces of the organ, but the tissues
present a healthy appearance.
Spleen.—Is large, double the normal weight, 3 lbs. 8½| ozs. There are a few dark
brick-red coloured extravasations under the capsule.
On section the tissues are exceedingly firm and present an appearance somewhat re-
sembling an amyloid change to the naked eye.
Kidneys.—The right weighs 1 lb. 5½- ozs., the left 1 lb. 3 ozs. The capsules strip
easily, and the external cortical portions present a normal appearance. On section, the
cortical portion is somewhat dark in colour, and the medullary portion streaked red and
white, but nothing pathological can be made out macroscopically.
Stomach.—Is very small and contracted. On section, a small amount of semi-digested
grass was found in its cavity.
The walls of the cuticular portion are exceedingly thick, and the internal coat presents
a lobulated appearance made up of small elevations rounded on their summits and of a
bright yellow colour.
The villous portion is stained a greenish-yellow colour, mottled a pinkish red on its
surface, and the internal coat is deeply corrugated. On stretching the organ, the tissues at
the bottom of the sulci between the rugæ are deeply congested and present a dark red
colour, but there is no ulceration or solution of continuity of the superficial mucous mem-
brane. At the fundus of the organ involving the villous portion, one inch from the line of
demarcation between it and the cuticular portion, ,is a " Spiroplera " tumor, the size of a
small hen's egg, whilst on the surface of the mucous membrane covering it are a few of
the small species.
Small Intestines.—Almost the entire length of the gut presents more or less injected
appearance, and there is one small patch measuring 2" × 1.5" in the ileum raised eight feet
from the ileo-cæcal valve, which presents circular extravasations of blood, of a dark reddish-
purple colour, varying in diameter from one-sixth to one-third of an inch. Peyer's patches
are somewhat swollen and œdematous, but there is no sign of ulceration.
Large Intestines.—Oæcum presents one deeply congested patch of 5" × 4.5" in extent,
but here also there is no sign of ulceration. Colon and Rectum present a healthy appearance.
Brain.—The membranes present a healthy appearance. The superficial veins are con-
gested, but, on section, nothing pathological is observable. The lateral ventricles are free
from fluid.
Bladder.—Presents a healthy appearance and contains 70 ozs. of orange-coloured urine ;
Sp. Gr. 1,024, acid in re-action, which contains no albumen, a few epithelial and granular
casts, together with a small number of free red blood corpuscles.
Crystals.—Carbonate of Calcium a few, Oxalate of Calcium numerous small ones, large
orange-coloured crystals of Uric Acid assuming several different forms.
Remarks.—This animal, a Persian Gelding, aged 13 years, was purchased on 26th
November 1886. It was attacked with fever on 20th November 1892, but the hæmatozoon
was not discovered in the blood until the 27th. During the six years which elapsed between
the date of purchase and appearance of the disease the animal had good health.
On admission to the Laboratory Hospital on the morning of the 29th the animal was
in very good condition, but on examination the visible mucous membranes were found to be