SCOTTISH METROPOLITAN VETERINARY MEDICAL SOCIETY. 835 
irritation of the peritoneum; it may be utilised for tlie introduction of 
antiseptic fluids directly into the intestine, and in cases of twist or dis¬ 
placement, where the tympanitic intestine can only be felt through the 
wall of the rectum there should be no hesitation in the introduction of 
the canula through the gut. The use of the canula in the circumscribed 
tympany accompanying torsion and displacement is a point, to which I 
wish particularly to direct your attention. 
I am satisfied that some cases of partial twist and displacement are 
cured by the spontaneous reduction of the involved knuckle of the in¬ 
testine, and that not unfrequently the gradual removal of the imprisoned 
gas, by absorption or otherwise, is an important factor in this reduction ; 
in any case, the longer the gas is allowed to remain in the intestine the 
greater is the probability of congestion and mortification resulting, and 
the more certainly will the involved bowel become paralysed subse¬ 
quently ; further than this, the removal of the pressure exerted by the 
gas must give some relief from pain, which, be it remembered, is often 
the actual cause of death in these cases; and the character of the 
evolved gas will enable us to decide as to the existence or non-existence 
of mortification. 
If necessary, the tapping should be repeated again and again and in 
different situations. I have never yet seen any ill result follow the 
punctures, and if any hesitation is felt the small trocar and canula 
attached to the hypodermic syringe may be first introduced. 
ARTIFICIAL EYES IN THE HORSE. 
In the October number of the Veterinary Journal for 1875 an article 
on this subject by the late Mr. Field, with some remarks by the Editor, 
will be found. 
An opportunity occurring, I last year determined upon trying the 
utility or otherwise of the horn discs, and through the kindness of Mr. 
Dollar, junr., I obtained one of these, manufactured by Messrs. Arnold. 
The subject of the test was a very valuable lorry horse, whose eyeball 
had been burst some months previously in a most unaccountable manner 
while his driver was away at his dinner. All signs of inflammation in 
the injured eye had subsided, but the owner did not like the unsightly 
appearance it gave to the animal’s face. 
The introduction of the disc was accomplished in the manner described 
by Mr. Field with the greatest ease, and as observed by that gentleman 
the difference in the appearance of the animal was striking; the disc, 
however, was too small, and during the night it became displaced ; in a 
few days subsequently I obtained a larger one, and after it had been 
allowed to remain in situ for four or five days catarrhal inflammation of 
the conjunctiva was induced, necessitating removal, and the application 
of measures for the reduction of the inflammation. The same result 
followed the re-introduction of the disc, but the experiment incidentally 
illustrated the value of the disc in the case of entropium. For some 
time prior to the use of the disc, I had noticed that entropium of the 
upper lid was gradually taking place, and was contemplating an operation 
for its prevention, but I found after the disc had been used for a 
short time that the tendency to inversion was reduced, and by its 
repeated use for a few days at a time I have now succeeded in doing 
away entirely not only with the actual eversion, but also of any tendency 
to it. 
While referring to this case I may direct your attention to the great 
benefit to be derived from the administration of iodide of potassium and 
calomel (alba) in lenticular cataract. In this particular horse the un- 
