532 
ON NECROSIS OF THE BONES OF THE HOCK. 
By the same . 
In 1816 we attended a cow belonging to the late — Clayton, 
Esq., of Lostock Hall, labouring under necrosis of the bones of 
the hock, from an external injury. The cure appearing hope- 
less, amputation was proposed, and acceded to by Mr. C. She 
was brought to our establishment, a distance of nearly four miles, 
in a cart, and, in three days afterwards, the limb was removed 
about half way up the tibia, by Mr. B., nothing untoward 
taking place during the operation, if I except the breaking of the 
tourniquet (which was a strong cord put round the superior part 
of the femur, and twisted by means of a piece of wood) a thing 
which was soon remedied. The stump healed, and we had a 
wooden leg made for her, upon which in a very short time she 
was able to walk up and down the yard. In three or four months 
afterwards, from the pressure of the w'ood upon the stump, inflam- 
mation was again produced, and, spite of all our efforts, suppu- 
ration ensued, the tibia became diseased, and she was destroyed. 
FRACTURE OF THE CRANIUM SUCCESSFULLY 
TREATED. 
By the same. 
In the summer of 1816 a pony was brought, labouring under 
compression of the brain, from fracture of the os occipitis. It 
could just stagger, but was unconscious of surrounding objects; 
and I several times, by the pressure of my finger upon the de- 
pressed portions of bone, made the animal drop as suddenly as 
if it had been shot. Mr. B. cut down upon it with a scalpel, and 
raised and removed all the fractured portions. Its consciousness 
then returned, and in less than a fortnight the external wound 
was healed, and the animal at its accustomed work, drawing a 
milk cart every day into the town. 
FRACTURE OF THE ISCHIUM. 
By the same . 
In 1817 a pony was galloped by the groom for a short distance 
upon some fine turf : it suddenly fell, and was incapable of again 
raising its posterior extremities. I went to see it, when I found 
