this operation
from being generally adopted.

That it is successful there is no gainsaying. Professor Bayer, of the
Vienna School, with whose name is associated the last of the three methods
of operating we have described, is enthusiastic in praise of the operation,
and says: 'The favourable results that I have got by this operation have
caused me wholly to abandon the medicinal treatment, and to prefer in all
cases the surgical operation as being the best means to the end.'

_Partial Excision of the Lateral Cartilage_.--Discarding the somewhat
elaborate methods we have just described, there are English operators who
removed the necrosed portion only of the cartilage, and do so in what
appears at first sight a comparatively rough-and-ready manner.

The apparent roughness is that they do not concern themselves with
conserving the coronary cushion, and hesitate but little in cutting
portions of it bodily away. One would imagine that in this case the quarter
of the side operated on would be always more or less bare of horn. Such,
however, is not the case.

To perform this operation the animal is again cast and chloroformed. Some
operators, however, use the stocks and dispense with the anaesthetic. The
foot is first well cleaned with soap and water and a stiff brush, and the
hair of the coronet over the seat of operation shaved. Again, too, the horn
of the affected quarter is rasped until it yields easily to pressure of the
thumb, and the whole of the foot washed in an antiseptic solution.

A probe is now inserted into the opening at the coronet, and the direction
of the fistula noted, after which the foot is firmly secured, and an
Esmarch bandage and tourniquet applied to the limb.

This done, a triangular or wedge-shaped portion of skin, coronary cushion,
and thinned horn is removed with a strong sage-knife or scalpel.

The base of the wedge-shaped portion removed contains the opening of the
fistula, and the apex of the wedge should reach to the bottom of the sinus
(see Fig. 142).

After the horn is removed and the fistula followed up, it is sometimes
found that what we at first thought was its end, it may now be continued in
an altogether different direction.

It is again followed up with the probe, and the horn and sensitive
structures excised until we are quite certain we have reached its furthest
extent.

Attention should next be paid to the cartilage. Wherever spots of necrosis
are found, as indicated by t