31
Autopsy.—Small
extravasations of blood found lying under the visceral
pleurae, also sub-endocardial. Perihepatitis, enlarged liver, spleen enlarged to
three times normal size. Few petechiæ dotted over the mucous membrane of
the small intestine.
Horse No. XXIX.—Brown
Arab, entire, aged. Subcutaneously inocu-
lated on the 7th July 1891 with 0.8 c.c. of blood containing a few hæmatozoa
taken from the Jugular Vein of Horse No. XXIII. The swelling and oedema at
the seat of inoculation increased until the 7th day when it measured 2.5''x 1.5''
and on the following morning the tumor presented a flaccid appearance with
loss of tenderness and tension of the part on manipulation, and the hæmatozoon
was discovered in the blood on microscopical examination. The latent period
occupied seven days. Temperature remained sub-normal until the evening of the
sixth day after inoculation, when it assumed the continued type accompanied
by remissions and well marked intermissions ; the last occurred on the morning
of the day on which the animal succumbed, rising again 3.2°C. before death.
Autopsy.—9 A.M. Decomposition too far advanced to make satisfactory
examination.
Horse No. XXX.—Dunn Country-Bred Mare, aged. Subcutaneously inoculat-
ed on the 7th July 1891 with l.0c.c. of blood taken from the Jugular Vein of
Horse No. XXIII ante-mortem. The latent period occupied seven days. The
swelling at the seat of inoculation presented a small raised tumor on the day
following the injection of blood which steadily increased in size accompanied
with tenderness and tension of the part until the morning of the seventh day
when it measured 6" X 3" X l". On the day following the swelling had dimi-
nished in size, was flaccid and the tenderness considerably less than on the day
previously and a few hæmatozoa were found in the blood of the general circula-
tion on microscopical examination of that fluid. The temperature registered
38.3°C. on the evening of inoculation and remained about 38°C. for the next two
days. From this latter date until death on the 15th July there were marked
exacerbations in the evening and intermissions in the morning averaging 2°C.
Autopsy.—Some emaciation, localized emphysema of the apices and borders
of the lungs ; some sub-pleural ecchymoses. Heart—Yellow-coloured
jelly-like
exudation round the base of the organ, several sub-pericardial ecchymoses and
sub-endocardial extravasations involving the walls of the right auricle and both
ventricles. Liver, small. Spleen, considerably enlarged, dotted over with
ecchymoses. Stomach.—Yellow
pigmented condition of the cuticular and
villous portions. . Kidneys presented numerous small patches of extravasation
involving the cortical portion of the organs.
Horse No. XXXI.—Was
inoculated subcutaneously with 0.3c.c. of blood
taken from the right ventricle of Horse No. XXXIII eight hours P.M. on the
11th July 1891. The latent period was nine days. There was entire absence
of swelling and œdema from the seat of inoculation. The temperature was sub-
normal until the first day of the disease, but was then followed by the continued
fever with irregular periods of intermissions. Death occurred on August 2nd
somewhat suddenly on the 14th day of the disease. Extensive pathological
lesions were found, viz., circumscribed pneumonia of the anterior lobe of the left
lung, numerous sub-endocardial extravasations in the ventricles of the heart,
together with those of the spleen and stomach.
Horse No. XXXII.—Light
Chestnut Country-Bred, aged. Subcutaneously
inoculated on the 11th July 1891, with 0.3 c.c. of blood taken from the right
ventricle of the heart of Horse No. XXIII, eight hours P. M. The latent period
occupied nine days. The temperature was sub-normal until the evening of the
day prior to the discovery of the hæmatozoon. On the following day it attained
38°C. and the organisms were numerous in the blood. The animal died on the
second day of the disease.
Autopsy.—Sub-endocardial lesions were found in the right and left ventricles
of the heart.
Horse No. XXXIII.—Brown
Country-Bred entire, aged. Inoculated sub-
cutaneously with 1.0c.c. of serous fluid drawn from the left tunica vaginalis testis
of Goat No. III on 25th July 1891. The latent period occupied five days.