None of the coarse applications which some ignorant persons recommend, ought to be used. A strong solution of the sulphate of copper or of zinc, by coming in contact with a large surface of granulating mucous membrane, can hardly be expected to allay its irritability, or dispose it to take on a healthy action; and a seton, forced barbarously through the orifices made with the trephine, can only exist as a foreign agent, keeping up the action which the surgeon is desirous should terminate. Gentle means are, in every sense, the ones to be adopted. Mild tepid injections are to be employed, with the intention to wash out the accumulated pus, allay the inflammation that caused it to be secreted, and correct the diseased tendency of the part. All stronger agents are barbarous; and I have witnessed animals rendered dangerously vicious by their employment. When, however, the acute stage has past; when the inflamed and secreting surface has lost its activity, not unfrequently succeeds a dull, lethargic state, which the mild treatment, hitherto advised, will not touch: now it is that stimulating injections are beneficial; and however much reason there was in the first instance to denounce their employment, they are now indicated by the soundest principles of scientific practice. Even at this time, however, they must not be pushed too far. The constitution should be stimulated, that their effect may be aided, and their continuance necessitated for the shortest possible period. The sulphate of copper or of zinc; the acetate of copper or of zinc; the chloride of zinc or of lime; the nitrate of silver or of mercury; the black or yellow wash, in strength proportioned to the symptoms, may here be of service. It is well, however, to remember that these agents soon lose the efficacy, and the greatest benefit, therefore, is obtained when they are occasionally changed on the first sign of their potency decreasing. Still injections alone cannot be expected to effect a restoration, and, therefore, topical measures must be combined with constitutional treatment. A course of mercury may be tried, or some of the many agents, which, like balsams, peppers, and essential oils, act on the mucous system, can be administered,--never, however, relying upon any one medicine for too long a period; but, as in the previous case of injections, changing it wherever the drug appears either to have no effect, or to have lost its power over the system. By such treatment, actively employed and combined with a proper attention to exercise and diet, the case must be aggravated indeed which is beyond relief. The cure, however, we must not expect to be quick; but it will generally in the end be realized. Perseverance may be required, but barbarity will not hasten success. I object to many of the practices which the veterinary professors of the London College inculcate to their pupils; because those practices, in my opinion, being based on false principles, are needlessly severe. Of the