109
Date.
1891.
December 4 ...
„
5 ...
„
6 ...
Day of
Disease..
...
...
Temperature °C.
A.M.
37.2
37.8
37.5
1 P.M.
38.5
38.5
38.2
5 P.M.
39.3
39.2
38.5
Hæma-
tozoa in
Blood.
Swarm-
ing.
Do.
Do.
Urine.
Colour.
Clear.
„
„
Sp. Gr.
1,042
1,032
1,020
Reaction.
Slight-
ly alka-
line.
Acid.
Strong-
ly acid .
Albu-
men.
Nil.
„
„
Phos-
phates.
Nil.
„
„
REMARKS.
4th.—General
condition
worse, œdema and swelling
of hind limbs has increased,
and the mucous membranes
have become intensely yel-
low, and there are extensive
conjunctival extravasations,
appetite good.
5th.—Animal much weaker,
appetite failing, and usual
symptoms of Surra are
aggravated.
6th.—Animal very weak, and
death took place at 12-30
A.M. on the 7th.
Autopsy.—The body is emaciated. The visible mucous membranes are yellow in colour, and there is some swelling
and œdema of the lower portion of the abdomen and sheath. Between the abdominal muscles and the skin at the
most dependent part of the belly, there is a collection of orange-coloured exudation, which runs from the scrotum for-
ward to between the fore limbs on to the front of the chest. All the tissues and organs of the body are stained an
orange colour.
Thorax.—The pleuræ are not adherent on either side of the chest, and there is no fluid in the pleural cavities. The
trachea is surrounded by a certain amount of the yellow-coloured exudation, which is also present in small amount
round the larynx.
Lungs. —Are well distended with air. Here and there a few small dark red-coloured petechiæ are present, lying
under the visceral pleuræ. On section, the organs present a healthy appearance.
Heart.—Weighs 6 lbs. 4 ozs., presents a large amount of yellow-coloured exudation around the base of the organ, and
surrounding the great vessels. There are large and small ecchymoses, and extensive extravasations of blood lying on
the right ventricle, and running down on either side of the anterior coronary vessels. These extravasations are of a
dark-red colour, and lie beneath the visceral pericardium, and appear only to involve the subjacent muscular tissues to a
very limited degree.
Right Auricle.—Contains dark blood clots, and presents six or seven small sub-endocardial petechiæ.
Right Ventricle—Contains blood clots, running up the large vessels. There are several large sub-endocardial extra-
vasations involving the musculi papillares,
Left Auricle.—Presents a healthy appearance.
Left Ventricle.—Is contracted, and walls hypertrophied. There are numerous large and extensive sub-endocardial
extravasations.
Liver.—Weighs 13 lbs, 9 ozs., is tinged yellow and presents numerous small circular bodies about the size of shot
grains dotted over the surfaces of the organ, and throughout its tissues on section. These bodies are yellow in colour,
and hard in consistency.
Stomach.—Cuticular and villous portions healthy, with the exception of a small lump near the boundary line, lying
on the villous portion. This tumour is hard and on section contains numerous Spiroptera Megastoma.
Spleen.—Weighs 4 lbs. 12 ozs., yellow tinged, firm, with numerous petechiæ scattered over the capsule ; on section
tissues appear healthy.
Kidneys.—Right weighs 1 lb. 6 ozs., Left 1 lb. 4 ozs. The capsules strip easily, and present no extravasations. On
section, the organs are pale and are tinged yellow.
Small Intestines.—A few small ecchymoses scattered over the surface-of the mucous membrane ; no ulcers; tissues
are stained yellow. No parasites.
Large Intestines.—Cæcum and Colon somewhat distended with gas ; no petechiæ, but a few parasites (strongylus
armatus).
HORSE No. LVIII.
Subcutaneous inoculation with soiled rat's blood, result negative. After 41 days, re-inoculation with Horse-Surra
blood. Latent period 9 days, death on the 9th day of disease.
Brown country-bred, aged, in fair condition and healthy.
Date.
1892.
February l8th.
Day of
Disease.
....
Temperature ° C.
A.M.
36.3
P.M.
....
5 P.M.
38.1
Pulse.
A.M.
28
P.M.
30
Respira-
tion.
A.M.
20
P.M.
20
Hæmatozoa in
Blood.
Healthy
REMARKS.
18th.—The animal was subcutaneously
inoculated over the left shoulder
with 2.0 c.c. of blood, containing
very numerous and active hæma-
tozoa, taken from the hearts of
several rats (Mus decumanus) im-
mediately after death.
B 2236—28 ap