all likelihood they will, your best plan is not to stop the flow of blood till the animal fall or is about to fall. When this occurs, run a pin through the edges of the orifice, and finish by twisting round it a lock of wool. (118.) _Removal of Hydatids from within the head._ This animal, and the symptoms which it causes, I have fully described at (169). Their removal has been attempted in a variety of ways, but the simplest method, and one most likely to succeed, is that followed in this quarter. A couple of incisions, forming when completed the letter T, are made in the integument covering the soft part of the bone under which the hydatid is supposed to be. Two flaps are in this way marked out, and are dissected back so as to expose the skull. The yielding portion of the latter is then pared away, which brings the sac into view. This will be seen alternately to sink and rise, following in this respect the motions of the brain. A moderate-sized needle, slightly curved and filled with thread, is now passed through the exposed portion of the cyst, and the thread allowed to remain. The fluid is thus permitted slowly to escape, and at the same time the sac becomes collapsed, after which it is easily removed by pulling gently at the thread with which it is connected. As good a hold should be taken with the string as possible, and all the water should be allowed to flow out before any attempt is made to extract the remains of the hydatid. To conclude the operation, lay down the flaps of skin in their original position, covering them with a small piece of folded linen smeared with lard, and over all apply a cap. Never try to save the bone which you cut, by turning it back in the form of a lid, for by so doing you will only endanger the life of the animal, which is otherwise in little jeopardy. It will often happen that the hydatid, from being in the interior of the brain, will not be brought into view by the removal of a portion of the skull. In this case the brain must be punctured in order to reach the sac and evacuate its contents.