AND BOTS IN THE (ESOPHAGUS. 401 
The liver and lungs were sound. The pericardium contained 
about ^xij of serum, of a pale yellow colour. 
Observations.—A question naturally arises in this case, as to the 
cause of so much sand and soil being taken into the intestines. 
Was it to correct any acidity in them ? or was it instinct that 
caused it to be taken, for the puipose of irritating and removing 
the bots from the oesophagus ? I have known several horses eat 
a great quantity of soil without injury; but they have been princi¬ 
pally broken-winded horses. This disease is considered by some 
veterinarians to be caused by indigestion and disordered bowels. 
It is highly probable that the sand must have caused consider¬ 
able irritation in the colon and caecum, and so have produced in¬ 
flammation and purging. 
I am of opinion that bots are not so innocuous as is supposed 
by some veterinarians; for can it be imagined, that when they pe¬ 
netrate the cuticular coat, and quite into the muscular, and, in 
some cases, through it, they must not cause considerable mischief? 
I am likewise inclined to think that worms of every description 
are, to a certain extent, injurious, especially some of the larger 
ones. There were about 201bs. of soil in her intestines, which 
had been picked up from that spread on the field. 
PARALYSIS* OF THE RIGHT POSTERIOR 
EXTREMITY. 
[ih/ the sameS\ 
ON Saturday, the 30th of December, 1826, I saw a two-year 
old filly, the property of Mr. Cuxon, of the Woodhouse, which 
was supposed to have put the thigh out of joint. 
Symptoms .—She was grazing in the field, and appeared to be 
in perfect health. On driving her forward she could not move her 
off hind quarter, but dragged it after her, and appeared to have 
lost all command of it. There was no dislocation or fracture, or 
any preternatural heat about the joints or any part of the extre¬ 
mity. She could rest some of her weight on it when she backed 
herself a little and stood still. 
I bled her in the thigh vein; and I suppose that she lost five 
quarts of blood before we were able to stop the haemorrhage, on 
account of her violently kicking when we attempted to pin up the 
orifice; and we were at last obliged to apply a bandage round the 
thigh. The bleeding had not long stopped when we were asto¬ 
nished to see her move her leg forward nearly as well as usual. 
^ Query, Rheuinalisin ?—Edit. 
3 B 
I 
