82
Stomach.—Small and somewhat contracted. On section, the cuticular portion is tinged a light yellow, whilst the
villous is somewhat pink, with patches here and there of a red colour.
Kidneys.—Both are imbedded in a mass of yellow exudation. The capsules strip easily, and the surface of the
organs presents a pale brownish-grey colour, dotted over with small circular spots, dark-red in colour, and varying
considerably in size. On section of the organs these patches are found to invade the cortical portion in large numbers.
The Small Intestines present externally a number of small, circular petechiæ lying under the peritoneal covering ;
but none are to be observed on section.
Large Intestines.—Healthy.
The chief points of interest are :—
(i) The transmissibility of "Surra" from rat to horse by inoculation of soiled blood.
(ii) The length of the incubation period being only 14 days, thus nearly approaching that presented by
ordinary horse Surra.
(iii) The great rapidity with which death occurred after the appearance of the hæmatozoon in the blood.
(iv) The decrease in size and tension of the swelling at the seat of inoculation, which immediately preceded
the appearance of the hæmatozoon in the blood.
(v) The well marked pathological lesions in the heart.
HORSE No. LXII.
Brown, country-bred pony, aged, healthy, and in fair condition.
Subcutaneous inoculation with soiled rat's blood. Local symptoms at seat of inoculation. Appearance of a
general urticarial eruption, and hæmatozoon after latent period of 63 days. Death on the 5th day of the disease.
Double basic pneumonia.
Date.
1892.
May 11 ...
„ 12 ...
„ 13
...
„
14
...
„ 15
...
„ 16
...
„ 17
...
„ 18
...
„ 19
...
„ 20
...
„ 21
...
„ 22 ...
„ 23 ...
„ 24
...
„ 25
...
„ 26
...
„ 27
...
„ 28 ...
„ 29 ...
„ 30 ...
„ 31 ...
June 1 ...
„
2 ...
„
3 ...
„
4 ...
„ 5 ...
„ 6 ...
„
7 ...
„ 8 ...
„
9 ...
„ 10 ...
„ 11 ...
Day
of
Disease.
....
...
...
...
...
...
...
...
...
...
...
...
....
...
...
...
...
...
...
...
...
...
...
...
...
...
...
....
Temperature °C.
A.M.
...
36.8
36.4
37.4
38.1
38.3
38.1
38.1
37.0
38.1
38.1
38.0
37.5
38.1
381
38.1
38.1
38.0
38.1
39.0
38.1
38.6
37.7
38.6
38.0
38.6
38.1
38.0
38.1
36.4
37.6
37.4
1 P.M.
...
37.4
37.4
38.0
38.1
38.1
38.7
38.5
38.8
38.4
39.1
39.1
38.1
38.1
38.1
38.1
38.1
38.1
38.8
38.1
38.1
39.1
38.1
39.1
38.1
38.1
38.1
38.1
38.1
38.1
38.0
38.0
5 P.M.
38.1
38.3
38.1
39.0
38.1
383
38.1
38.5
39.0
39.0
39.1
38.8
38.0
38.6
38.1
38.1
38.1
38.1
38.3
38.1
38.1
39.0
38.1
38.1
38.0
38.1
38.6
38.8
38.0
38.0
38.1
38.3
Pulse.
A.M.
...
36
36
44
41
36
36
36
60
52
60
36
33
36
33
40
36
36
40
44
40
39
36
36
40
36
44
48
36
40
36
40
P.M.
...
36
36
40
36
40
42
40
44
48
52
44
34
40
28
44
44
44
46
44
40
42
44
36
44
40
44
36
40
40
40
40
Respira-
tion.
A.M.
...
30
30
32
30
28
26
24
32
28
34
28
28
26
33
28
24
29
32
24
24
30
28
24
25
24
24
28
28
28
20
23
P.M.
...
30
29
28
24
36
32
30
30
32
26
28
32
32
28
32
28
28
30
32
28
32
32
28
24
28
20
28
28
26
24
28
Hæmatozoa
in Blood.
Healthy...
„ ...
„
...
„ ...
Absent ...
„
...
„ ...
„ ...
„ ...
„ ...
„ ...
„ ...
„ ...
„ ...
„ ...
„
...
„ ...
„ ...
„ ...
„ ...
„ ...
„ ...
„ ...
„ ...
„ ...
„ ...
„ ...
„ ...
„
...
„ ...
„
...
„ ...
REMARKS.
14th.—The animal was subcutaneously
inoculated over the Left shoulder with
2.0 c. c. of blood containing very nu-
merous hæmatozoa, taken from the heart
of a rat (Mus decumanus).
15th.—There is a small raised tumour 1"
in diameter at the seat of inoculation.
16th.—Tumour still further increased in
size, and is somewhat tender on mani-
pulation.
17 th.—
Do.
do.
18th.—The tumour now measures 3.5" in
diameter, and is tense and very tender
to the touch.
19th.—
Do.
do.
24th.—The tumour at the seat of inocu-
lation is reduced in size, and the tension
and tenderness have almost disappeared.
The sheath is swollen, and there is some
œdema of the hind limbs.
31st.—The swelling at seat of inoculation
and the œdema of the limbs have dis-
appeared.