65
Horse No. LXXI.—The eruption appeared on the morning of the l6th day
of the disease, and was well marked between the thighs, especially of the left one;
there were a few patches on the neck and back. Temp. 38.5°C. A.M. rising to
40°C. in the evening. The hæmatozoa were numerous in the blood all the
time the eruption lasted, although they were only few in number on the
previous following days.
Horse No. LXXII.—Five patches of urticaria appeared on the left side of the
neck, on the morning of the twenty-second day of the disease, and persisted for
forty-eight hours ; during this period the temperature was only slightly above
the normal range, and the ha3matozoon was absent from the blood.
Horse No. LXXIII.—The
urticarial eruption appeared on the neck and flanks
on the day the disease was recognized, and on the morning of the second day the
general surface of the skin looked uneven and puffed, and on the left side of the
neck there were several patches, the remnants of the rash. On the fourth day
some remains of it were left, and on the morning of the fifth day at 8 a.m. the
eruption became general, involving the skin covering the neck, chest, ribs and
flanks, and under-surface of the abdomen. The temperature was normal, and
the hæmatozoon absent from the blood, the former rose nearly 2°0. on the
evening of the fourth day, and the hæmatozoon appeared in small numbers.
Surra contracted by gastric ingestion of blood.
Horse No. XX.—The eruption appeared on the fore quarters, shoulders,
neck, and hind quarters, on the ninth day of the disease. The temperature
had only been a few points over 39°C. ; for several days it was 38.7°C. during
the persistence of the rash, and rose to 39.6°C. on the following day. The
hæmatozoon, which had been absent for three days from the blood, now appeared
in small numbers, and on the succeeding day became very numerous.
Subcutaneous Inoculation.
Horse No. VI.—On the morning of the twelfth day of the disease, an
urticarial form of eruption appeared., involving the skin of the whole body. The
temperature on the day before was 41°C., but on the morning of the eruption
was 37.8°C. and in the evening 38°C. The hæmatozoa were numerous in the
blood on the day prior to the appearance of the rash, few during its persistence,
and numerous again on the day following. Temperature on the morning of the
latter day was 38.3°C.
Horse No.. XXII.—On the morning of the 11th day of the disease, the
eruption appeared urticarial in character, scattered over the neck, shoulders
and chest, also a few patches over the abdomen. Each individual patch con-
sists of an elevation of skin, caused by the deposit of a varying quantity of a
yellow-coloured jelly-like exudation in the subcutaneous tissue. For the most
part these elevations are circular, others oval in form and irregular in size.
Temp. in the morning 39.7°C. and in the evening 39.5°C. The hæmatozoa were
numerous in the blood previous to the eruption, few whilst the rash persisted,
and again numerous on the day following.
Subcutaneous Inoculation. (Goat—Horse blood.)
Horse No. XLI.—This animal was inoculated at noon one day, and an
urticaria broke out the following morning, on both sides of the neck and on the
skin covering the angles of the jaw. On the succeeding day the eruption was
much more marked, and had extended over the scapular region, and the ribs on
both sides. It persisted for thirty-six hours, and then commenced to fade. The
temperature all the time was subnormal, and the hæmatozoon did not appear in
the blood until ninety-six hours later.
Horse No. XL.—This animal was inoculated at noon one day, and sixty-
eight hours later an urticaria appeared on the neck, and along either side of the
spinal column ; it consisted of circumscribed raised patches, oval or circular in
form, which after persisting for seventy-four hours gradually commenced to fade,
after the first appearance of the hæmatozoon in the blood. The temperature
was subnormal until the morning upon which the hæmatozoon appeared, when
it rose from 36.4°C. to 39°C.
B 1086—17