's amputating
knife all the big fibrous mass which I could safely remove was cut and
sliced off, and the coronet and pastern reduced as nearly as possible to
its natural dimensions. The diseased cartilage, or side-bone, gave some
trouble, a considerable portion having to be cut and scraped, and the sinus
in it gouged out; but its complete removal did not appear to be called for.

'There was little if any haemorrhage until release of the tourniquet, when
the whole broad surface became deluged with blood, three or four small
arteries spurting and veins flowing in all directions, so much so that I
was glad to reafix the clasp, and with the firing-iron seal up the vessels,
searing gently all over the surface.

[Illustration: FIG. 113.--CHRONIC CORONITIS FOLLOWING 'TREAD.']

'A good dusting with antiseptic powder, a thick pad of carbolized wool, and
two long calico bandages wound tightly round, completed the work.

'The other, the near-leg, was then dealt with in the same way.

'The mass removed weighed a little over 9-1/2 pounds--5 pounds from the
off-foot and 4-1/2 pounds from the near. Its structure was fibrous tissue,
almost as firm and hard as cartilage, and with no appearance of malignancy.

'The after-treatment consisted simply of fresh dry dressings--copper,
sulphate, zinc sulphate, and calamine, equal parts--applied every third
or fourth day, after first bathing the feet in a shallow tub of warm
antiseptic water.

'At the end of eight or ten weeks a fairly presentable appearance existed.
The greater part of what had been raw surface was covered with healthy
skin, and the remainder had become dry and horny.'[A]

[Footnote A: _Veterinary Record_, vol. xiv., p. 201 (C. Cunningham,
M.R.C.V.S.).]

A further form of chronic coronitis is that shown in Fig. 113.

This condition is commonly the result of a severe and jagged tread with
the calkin, and takes the form of an ulcerous and excessively granulating
wound. As time goes on the granulations become hard and horny-looking, and
their fibrous tissue as hard and unyielding as tendon or cartilage.

These if treated in the early stages with repeated dressings of caustic,
or, if very exuberant, the use of the knife, usually yield to treatment. If
neglected until the condition depicted in the figure is arrived at, then
treatment, as a rule, is of no avail. Neither is treatment of any use if
any great loss of the coronary cushion has occurred.

D. FALSE QUARTER.