426 
ANIMAL PATHOLOGY. 
invigorated ! My friend Mr. Percivall relates two valuable cases 
of this. A mare with contracted feet was never subject to peri- 
odical oestrum, and her owner lamented in vain that he could 
not breed from her. She underwent the operation of neurotomy, 
and she became an excellent brood mare. A stallion with many 
a good point about him was useless in the stud : he was suffer- 
ing from some disease in the feet. A portion of the nerve was 
excised ; — his constitution underwent a complete change, and he 
became sire to a numerous and valuable progeny. You destroy 
pain, and you calculate on the simple effect of that, whether local 
or constitutional. Limiting your expectations to this, you will 
rarely be disappointed : but I asked you in my last lecture what 
you were to expect if you had not taken into consideration other 
effects of the removal of pain, the possibility, the probability, and 
in some cases the certainty, of increased inflammation from the 
use of the part diseased, from the concussion and pressure to 
which the foot is exposed in its natural action once restored. I 
asked you what would become of the horse with canker or quittor, 
or inflammation of the laminae or pumiced foot ? The destruc- 
tion of the part, and the utter ruin of the horse would be the 
inevitable consequence. This, I repeat, is the principle which I 
would wish to impress on your minds, — that the result of the ope- 
ration of neurotomy is the removal of pain ; and that it is for you 
to calculate the bearing of this on the actual disease and future 
usefulness of the animal. 
(This lecture breaks off abruptly here, from the necessary 
absence of one of the Editors.) 
RUPTURED DIAPHRAGM AND DISEASED STOMACH 
FROM BOTS. 
By Mr. W. A. Cartwright, Whitchurch. 
On Tuesday, 22d March 1836, a coach-horse, twelve years 
old, the property of Mr. Jobson, of Shrewsbury, went out from 
this town in the Hibernian coach, about eleven o’clock, a distance 
of five miles : he was returning again on the same day about 
three o’clock, when he dropped down dead, just before he arrived 
at his destination. The coach goes at the rate of ten miles an 
hour. 
Examination . — I opened him on the following morning, and 
found his diaphragm ruptured. The rupture was so large that 
a man’s head could easily pass through it, and was near the 
cnsiform cartilage, extending as much on one side as on the 
other. It was the muscular part, and some part of the muscle 
