"About twelve months ago, I examined the head of a cow, on the right facial region of which there existed an enormous tumor, extending from the eye to the lips, and which I mistook during life for a periosteal enlargement. On cutting into it, my mistake was evident. There was scarcely a trace of the original bones beneath the mass; even those forming the nasal sinuses on that side were replaced by a formation much resembling the cysts before alluded to, and full of abscesses. The progress of the disease was decisively marked in the inferior rim of the orbital cavity, where the osseous matter was being removed, and the morbid structure deposited." ULCERS ABOUT THE JOINTS. Occasionally, the joints assume a tumefied appearance, generally ulcerating, and causing painful wounds. _Treatment._--The application of one part of alum to two parts of prepared chalk, powdered and sprinkled upon the parts, is usually all that is required. WARBLES. It has been a prevalent opinion among farmers, that warbles are so many evidences of the good condition of their cattle. It must, however, be borne in mind that the warbles are the _larvae_ of the _oestrus bovis_, which is said to be the most beautiful variety of gad-fly. This fly, judging from the objects of its attack, must be particularly choice in its selection of animals upon which to deposit its eggs, as it rarely chooses those poor in flesh, or in an unhealthy condition. From this circumstance, probably, has arisen the opinion above-mentioned. [Illustration: HOME AGAIN.] These warbles--or _larvae_ of the _oestrus bovis_--so nearly resemble bots in the horse--or _larvae oestrus equi_--that, were it not for their increased size, they might readily be mistaken the one for the other. There is, however, one other difference, and that is in the rings which encircle the body; those of the former being perfectly smooth, while those of the latter are prickly, and from one third to one half smaller. The author was called, in the year 1856, to see the prize cow, Pet, belonging to James Kelly, of Cleveland, Ohio, whose extraordinary yield of butter and milk had been reported in the _Ohio Farmer_, a short time previous to his visit. This animal was found by him in rather poor condition; the causes of which he could only trace to the existence of these worms, comfortably located, as they were, beneath the animal's hide, and forming small tumors all along the spinal column, each being surrounded by a considerable quantity of pus. A number of these were removed by means of a curved bistoury and a pair of forceps, since which time--as he has been informed--the animal has rapidly improved, regaining her former good condition.