24
fluid. The left pleural cavity was free. No pleuritic adhesions. Lungs.—Free
from sub-pleural ecchymoses. Eight lung —Healthy. Left.—Anterior six inches
consolidated. On section—Lobules insulated by thin layers of exudation ; remain-
ing portion healthy. Cavity of the pericardium free from fluid. Heart.—Normal
in size. External surface free from extravasations of blood. Internal surface.—
Endocardial membrane lining the cavities stained yellow in colour, but free from
extravasations. Valves.—Healthy. Abdominal Cavity,—Free from fluid. Liver,
normal in size ; old perihepatitis of right lobe. Left—Free. On section.—Tissues
friable and invaded by concretions ; sub-capsular concretions. Spleen—Twice the
normal size, few sub-capsular petechiæ ; tissues, firm and healthy. Kidneys.—
Malpighian corpuscles visible as red points. Stomach.—Small. Villous portion.—
Tissues along the line of demarcation congested, no ulceration or erosion of the
mucous membrane. Intestines, Small and Large, were stained an orange colour,
but no pathological changes were present. Bladder.—Healthy. No parasites
were observed.
No. LXXXII.—Black Australian mare, aged 8 years, was purchased by the
Bombay Tramway Company on 22nd December 1888. The animal was found to
be ailing on 15th December, 1892. Temperature rose on the morning of 18th
to 40.3°C and the Surra hæmatozoon was discovered in the blood on the same
date. The animal was admitted into the Laboratory Hospital at 8 A.M. 21st De-
cember, Temperature 38°C. On the morning of the 23rd a treatment consisting
of Arsenic in the form of Liq. Arsenicalis was adopted. The animal received at
first the full physiological dose of grs. iv twice daily which was increased or
diminished according to the exigencies of the case. The temperature on the
evening of the 23rd December attained a maximum of 40.6°C, but subsequently
fell gradually until it reached 37.8°C. on the morning of the 26th December
and since that date up to the 15th February with one exception—28th January
1893, when it rose to 39°C. in the evening—has never exceeded 38.7°C. Death
took place on 26th February 1893.
Autopsy.—Body emaciated ; absence of all swelling and oedema. Thorax.—
Pleural cavities each contained 30 ozs. of a dark, blood-stained fluid ; no pleuritic
adhesions. Right Lung presented a few sub-pleural ecchymoses, and the right
lobule was the seat of a localized emphysema. On section.—Tissues appeared
healthy. Left Lung presented a few sub-pleural ecchymoses. There were two
patches of consolidation, one occupying the apex, the other, the more extensive
of the two, the base, the lobules in each instance being divided off by a layer of
exudation varying in thickness. The cavity of the pericardium contained 6 ozs.
of a dark red-coloured fluid. Heart—Externally, the surface of the right auricle
presented numerous sub-pericardial ecchymoses. On section—All the lining
membranes of the cavities are blood-stained, but the right ventricle presented a
few subrendocardial extravasations. The abdominal cavity contained forty ounces
of a dark blood-stained fluid. Liver—Small, but fairly healthy. Spleen—Nor-
mal in size, presented numerous sub-capsular petechiæ ; tissues firm. Kidneys.—
Equal in weight ; tissues healthy to the naked eye. Stomach.—The villous
portion contained a Spiroptera tumour. Intestines—Healthy in appearance ; no
parasites.
Bladder—Healthy.
No. LXXXIV.—A Grey Persian Gelding, aged 8 years, was purchased
by the Bombay Tramway Company on November 27th, 1889. Previous
History—Good. Present Illness—January 19th, 1893. Off-feed for two days,
returned to work, but re-admitted to Infirmary on 23rd. Temp. A.M. 39.1°C.,
4 P.M. temperature 40.5°C., hæmatozoon discovered in the blood. On admission to
Laboratory Hospital presented ordinary symptoms of Surra at an early stage of
disease. The fever was of the continued type with remissions, but as the orga-
nism on the morning of the 6th day was absent from the blood, the animal was
placed on an Arsenical treatment, commencing with a dose of gr. iv bis die. This
was gradually increased to gr. v on the 9th day, and continued until the evening
of the 11th, after which date in consequence of the very virulent symptoms of
Surra presented, together with dulness and physical prostration, all treatment
was abandoned. The hæmatozoon again appeared in the blood on the 17th, and
on the 18th had increased in numbers. Death took place somewhat suddenly at
5-30 P.M. on the latter date.