A lozenge-shaped incision, extending to near but not quite the circumference of the swelling, should be made with a large knife right through the skin and deeply into the growth.

One bold incision from the uppermost limit of the swelling down to the coronary margin of the wall is usually sufficient.

This is the oldest method of the three, and consists in making (1) a horizontal incision through the sensitive laminæ along the lower border of the cartilage, and (2) a vertical incision through the skin of the coronet, the coronary cushion, and a portion of the sensitive laminæ (see Fig. 139).

This is the oldest method of the three, and consists in making (1) a horizontal incision through the sensitive laminæ along the lower border of the cartilage, and (2) a vertical incision through the skin of the coronet, the coronary cushion, and a portion of the sensitive laminæ (see Fig. 139).

The wall covering the lateral cartilage first thinned and stripped off; the two flaps (a, a) of skin and the coronary cushion made by the vertical incision turned back.

They therefore make their first incision along the lower border of the coronary cushion (see Fig.

To this end a sage-knife (right- or left-handed, according as to whether the anterior or posterior portion of the cartilage is to be first removed) is again passed into the incision.

At about 1/4 inch from the incision in the horn, a second incision of similar shape is made through the sensitive structures, which incision is also carried up into the skin and structures of the coronet.

At about 1/4 inch from the incision in the horn, a second incision of similar shape is made through the sensitive structures, which incision is also carried up into the skin and structures of the coronet.

At about 1/4 inch from the incision in the horn, a second incision of similar shape is made through the sensitive structures, which incision is also carried up into the skin and structures of the coronet.

This incision severs, from bottom to the top, (1) the sensitive laminæ covering a portion of the pedal bone and a portion of the lateral cartilage, (2) the coronary cushion, and (3) the skin of the coronet and such structures as lie between it and the cartilage.

That this incision of the sensitive structures should be kept at 1/4 inch from the one in the horn has a reason.

This done, the flap is allowed to fall into position, and is there carefully sutured, not only at the skin of the coronet, but along the whole circumference of the incision.

Here Colonel Smith says: 'I strongly advise everyone to use a metal gauge (a thin piece of material) to introduce into the incision made by the saw, and run it up and down to ascertain whether the wall is properly divided throughout.

If this is getting slightly blood-stained, we know, of course, that the sensitive structures are reached, and the incision has been carried far enough.

In so judging the depth of the incision, however, care must be taken to see that the top of the coronary cushion is not injured with the saw, for if this is done the blood trickling into the depth of the incision will tinge the horn-dust, and give the false impression that the incision is sufficiently deep.

In so judging the depth of the incision, however, care must be taken to see that the top of the coronary cushion is not injured with the saw, for if this is done the blood trickling into the depth of the incision will tinge the horn-dust, and give the false impression that the incision is sufficiently deep.

In so judging the depth of the incision, however, care must be taken to see that the top of the coronary cushion is not injured with the saw, for if this is done the blood trickling into the depth of the incision will tinge the horn-dust, and give the false impression that the incision is sufficiently deep.

The newer pattern (Fig. 145) has the teeth so set as to make an incision wide enough to be looked into.

In this case the depth arrived at is to be judged by the appearance of the bottom of the incision.]

Again, this leads to wounding of the sensitive structures (this time at the lower end of the incision), and again the operator is confused by the blood thus allowed to run into the groove.

That usually found most comfortable for the first incision is with the foot held forwards and placed on an assistant's thigh in the position adopted for 'clenching up' when shoeing, while that for the rear incision is with the animal's knee flexed, and the foot held well up to the elbow.

That usually found most comfortable for the first incision is with the foot held forwards and placed on an assistant's thigh in the position adopted for 'clenching up' when shoeing, while that for the rear incision is with the animal's knee flexed, and the foot held well up to the elbow.

A drawing-knife is here used, and a further incision made over the white line so as to destroy the union of the sole with the wall between incisions 1 and 2, and so completely isolate the portions of wall included within the four grooves (see groove 4, Fig. 149).

It must be carved by first making an incision down the back, 1 to 2, and a second from 5 to 6; then divide the side 3 to 4, and cut the slices, as preferred, from the upper or thick part, or from the lower richer thin part, or give a little of each.