89
The left auricle contains a small amount of semi-fluid blood, and the lining membrane is blood-stained. The left
ventricle contains some dark semi-fluid blood, but little or no decolourized clots. There are a few sub-endocardial ex-
travasations about the size of a two-anna piece, involving for the most part the raised portions of the musculi papillares.
Valves healthy.
Liver.—Weighs 2 lbs. 10 ozs., and is fairly firm to the touch. There are numerous small extravasations on the
external surface of the capsule.
Kidneys—Right weighs 1 lb. 1 oz.. Left 1 lb. 2 ozs. The organs are of a somewhat pale greenish-grey colour. The
stellate veins are injected, but there are no petechiæ On section, the cortical portion presents a dotted red appear-
ance which appears to be due to congestion of the Malpighian corpuscles.
Stomach.—Externally the organ presents a normal appearance. On section there is a little semi-digested food
in its cavity. Both cuticular and villous portions present a normal appearance, with this exception that there are two
small raised eminences lying on the top of the rugæ, near the line of demarcation, with crypt-like depressions on their
summits.
Small Intestines.—The walls of the duodenum and a few feet of the jejunum are somewhat œdematous. There are
a few small extravasations aggregated together, but there are no signs of ulceration or parasites.
Large Intestines.—Are distended with semi-digested food. There are several irregular shaped patches, red in colour,
on the wall of the cœcum near its outlet into the colon, which present a deeply congested appearance, but no ulceration.
The colon is healthy.
HORSE No. XLV.
Subcutaneous inoculation 2½ hours post mortem with soiled blood of rat previously passed through one horse.
Maximum local manifestations at seat of inoculation on the 2nd day. Appearance of the hæmatozoon after a latent
period of 16 days. Death on the 9th day of the disease. Marked pathological lesions of heart, spleen, &c.
Brown country-bred, aged, healthy and in fair condition.
Date.
1891.
October
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„
„
„
„
„
„
„
„
„
„
„
„
„
„
„
„
„
„
4 ...
5 ...
6 ...
7 ...
8 ...
9 ...
10 ...
11 ....
12 ...
13 ...
14 ...
15 ...
16 ...
17 ...
18 ..
19 ...
20 ...
21 ...
22 ...
23 ...
24 ...
Day of
Disease.
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
1
2
3
Temperature °C.
A.M.
36.0
35.5
35.6
36.1
36.6
37.6
37.1
36.4
36.2
35.6
36.0
35.8
35.7
36.1
35.5
36.0
37.0
36.8
37.4
38.0
39.0
1 P.M.
36.0
36.0
37.3
37.7
37.3
39.7
38.6
37.5
37.4
37.5
37.1
37.4
36.6
37.5
37.7
37.7
38.3
37.4
39.6
39.4
40.5
5 P.M.
36.1
36.3
37.7
38.5
38.1
37.7
37.7
38.3
38.0
37.8
37.3
38.2
37.6
37.8
37.6
38.3
38.2
37.6
38.5
40.6
40.2
Pulse.
A.M.
30
28
32
33
30
28
26
28
30
26
24
26
24
28
26
28
30
36
32
36
52
P.M.
33
30
34
36
34
32
30
34
28
30
28
28
26
30
32
32
34
38
36
44
52
Respiration.
A.M.
12
10
12
10
12
10
12
12
12
14
12
12
10
12
12
14
12
12
12
12
12
P.M.
14
13
14
14
16
12
12
14
10
12
16
14
12
14
12
16
16
14
14
16
16
Hæmatozoa
in Blood.
Healthy ...
„ ...
„ ...
Absent ...
„
...
„ ...
„ ...
„ ...
„
...
„
...
„ ...
„
...
„ ...
„
...
„
...
„
...
„
...
„ ...
Few ...
Numerous.
Very.
numerous .
REMARKS.
6th, 2-30 P.M.—The animal
was inoculated subcutaneously
over the left scapular region,
with 1 c.c. of blood, contain-
ing swarms of hæmatozoa,
taken from the jugular vein
of Horse No. XLII, 2½ hours
after death. The latter horse
had been previously inoculat-
ed with blood from the rat
(Mus decumanus).
7th.—There is some swelling
and œdema at the seat of in-
oculation accompanied with
slight tenderness.
8th.—The swelling at the seat
of inoculation has entirely dis-
appeared. The visible mucous
membranes are clean,and there
are no conjunctival petechiæ.
9th.—There is some swelling
and œdema of the off hind leg,
between the fetlock and the
hock, but there is no tender-
ness on pressure.
17th.—Some conjunctival ec-
chymoses.
24th.—Ecchymoses of left con-
junctiva.
B 2236—23 ap