86
Heart. —The base is surrounded with a semi-solid jelly, in place of the fat, usually found in that
position. The external surface of the organ is free from extravasations of blood or small petechiæ. On
section, the internal surface of the endocardial lining is free from extravasations, and the valves are
healthy.
The peritoneal cavity is free from fluid.
Liver, weighs 3 lbs. 13 ozs., somewhat small. Glisson's capsule free from old or recent signs of
inflammation, so frequent in equines which have succumbed to Surra. On section the tissues present a
healthy appearance.
Spleen weighs 14 ozs., normal in size and consistency; on section tissues present a healthy ap-
pearance.
Kidneys.—Right weighs 6 ozs., left 6 ozs. The capsules strip easily. On section tissues healthy
in appearance.
Rumen, Reticulum, Omasum and Abomasum.—Healthy.
Large and small Intestines present healthy appearance.
Stomachs and Intestines with dung weigh
...
... 86 lbs.
Stomachs and Intestines without dung weigh
...
... 22 „
Weight of contained dung ... 64 „
Buffalo II, aged 3 years, was kept under observation for a period extending over 45 days, previous
to the commencement of the experiment. On January 14th, 1897, the animal was inoculated with
Surra in the ear. For this purpose a minute -incision was made in the skin, covering the top of the
right organ; and a minute drop of blood containing a few hæmatozoa taken from Buffalo No. I was in-
serted between the edges of the wound. No local manifestations of any kind were observed to follow
the inoculation, but on the morning of the 20th, after a latent period of a little over five days, the
hæmatozoon appeared in small numbers in the blood. The time which elapsed between the first appear-
ance of the hæmatozoon and death, viz. 46 days, was made up of seven paroxysms lasting 15, and seven
intermissions lasting 31 days. During the course of the disease the animal lost flesh, and before death
took place became emaciated, in spite of the appetite which was present until several days before the
animal succumbed.
The following table shows the length of the paroxysms and intermissions registered during the case,
together with the variation in numbers of hæmatozoa recorded in the paroxysms and temperature
during each period :—
TABLE XXVI.
Periods.
Observation ...
Latent Period ...
Paroxysm I ...
Intermission I ...
Paroxysm II ...
Intermission II ...
Paroxysm III ...
Intermission III ...
No. of
days.
4.5
5
1
2
2
4
4
1
Hæmatozoa
varied from.
...
...
Few ...
...
Swarming
...
Few—Nu-
merous.
...
TEMPERATURE.
Maximum. Minimum.
°C.
°C.
39.2
38.4
38.4
39.0
40.0
39.0
37.9
37.9
35.0
36.0
37.6
36.0
36.0
36.0
36.5
36.5
Periods,
Paroxysm IV
Intermission IV ...
Paroxysm V ...
Intermission V ...
Paroxysm VI ...
Intermission VI ...
Paroxysm VII ...
Intermission VII ...
No. of
days.
1
9
1
8
2
4
4
3
Hæmatozoa
varied from.
Few
...
Few
...
Few
...
Few
...
TEMPERATURE.
Maximum. Minimum.
°C.
°C.
37.5
38.2
37.1
38.4
38.0
38.4
37.8
37.2
37.1
36.5
36.8
36.2
36.6
36.4
36.2
36.0
Autopsy, 11 A.M., 12 hours after death.
Two leeches came out from the nostrils shortly after the death of the animal.
The body is somewhat emaciated and, on section, there is an entire absence of subcutaneous adipose
tissue.
Thorax.—The pleural cavities contain a small amount (30—40 C. C.) of a. semi-opaque fluid. There
are no pleural adhesions.
Lungs weigh 4 lbs. 6 ozs., are fully distended with air; slight emphysema left anterior lobe.
The pericardial sac is distended with a light yellow-coloured clear fluid.
Heart weighs 1 lb. 12 ozs. The base is surrounded with a semi-solid jelly in place of the fat
usually present in that position. External surface of the organ presents a healthy appearance.
Right Auricle.—Healthy.
Right Ventricle contains decolourised clot running up into the pulmonary artery. No sub-endo-
cardial extravasations.
Left Auricle.—Healthy.