THE 
VETERINARIAN. 
VOL. XXIV, 
No. 288. 
DECEMBER 1851. 
Third Series, 
No. 48. 
DISEASE OF THE PLEXUS CHOROIDES. 
By William Percivall, M.R.C.S. and V.S. 
A GREY mare, ten years of age, belonging to the First Life 
Guards, was admitted under treatment on the 23d September, 
1851, on account of having “ broken” one of her knees (the off) 
from a fall in watering order. The wound, which amounted at 
the time to little more than an abrasion of the skin, of the di- 
mension of a crown-piece, was treated in the simplest manner ; 
while a dose of physic was given, not more for the sake 
of counteracting any inflammation that might arise from the 
contusion of the fall than by way of improving the condition of 
the mare, who was looking rough in her coat. 
On the morning of the 27 th — the fourth day from her admission 
— the very day I had in my own mind resolved to send her out 
of the infirmary stable, I was unexpectedly called to her between 
six and seven o’clock A.M., in consequence of her having been 
“ suddenly seized” with alarming illness. I was shortly in at- 
tendance, but on my arrival found her dead. The account given 
of her was, that at the morning stable-hour — six o’clock — she 
was found “all of a tremble” in her stall; — that in a few minutes 
afterwards she fell down, but, lying in great apparent uneasi- 
ness, she was roused up again. She, however, continued in a 
state of such excessive tremor that she soon, from utter inability 
to maintain the standing posture, fell a second time. Once more 
she was, from appearing in more pain lying than standing, got 
upon her legs. All to no purpose, however. She again shook 
and fell, and after a few struggles expired. She had eaten 
every blade of the hay with which she had been overnight sup- 
plied, and almost all of a bran mash which had been given her 
at the same time. 
Anxious to learn all I could by way of throwing some light 
on the extraordinary case, from inquiries I made I collected that 
last summer, while at squadron drill on Wormwood Scrubs, she 
had fallen on one occasion on her head with her rider. And 
when she fell this last time, and broke her knee, she was said 
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