This singular disease is thus characterized: - The dog is continually running round and round; and where he has liberty to do so he will continue this action almost from morning until night He performs these incessant circles in precisely the same direction, and generally with his head a little inclined to the inside of the circle. At first he is conscious of surrounding objects; he stops for a moment when spoken to; but immediately afterwards he resumes his perambulations, carefully steering clear of every impediment in his way. After the first or second day, he usually becomes both blind and deaf, and yet still he marches round, blundering against every thing, and this he continues until he is fairly worn out, when he dies in slight convulsions.

On examination after death, there will generally be found pressure on some part of the brain, and on the side towards which the animal inclined his head. The nature of that pressure is variable. Spiculae of bone have been seen pressing upon, and entering into the substance of the brain: sometimes effusion of blood on the brain has been found, and, oftener, an accumulation of serous fluid in the ventricles.

This is a disease which has been uniformly fatal, and the dog labouring under it should be destroyed. If, however, the veterinarian is urged to do something, his course is plain. He must first bleed, and that copiously, in proportion to the size of the dog. The medium quantity of blood to be taken away in the various diseases of dogs may be calculated at about an ounce for every three pounds of general weight. In such a case, a far greater quantity should be abstracted.

The jugular is the most convenient vessel for bleeding both in the horse, and cattle, and dogs.

Purgative medicine must next be given. The best physic ball for dogs is the following: -

Recipe (No, 1). Phytic Ball*

Take - Powdered Barbadoes aloes, eight ounces; Calomel, one ounce; Antimonial powder, one ounce; Ginger, one ounce; Palm-oil, fire ounces: Beat them well together, enclose the mass in a jar, where it may be defended from the air by a piece of bladder, and give from three quarters of a drachm to two drachma, according to the size of the animal.

The bowels should afterwards be kept open by daily doses of Epsom salts; one or two drachms of which should be given rolled in silver paper, and divided into portions according to the size of the dog. A seton in the nape of the neck, and extending from ear to ear, is also clearly indicated; and, to prevent the exhaustion of the animal, he should be put into a basket, or box, in which he will be unable to perform these circumvolutions: he will then lay himself quietly down.

A vein may be distinguished from an artery by ils having no pulsation. If an artery of any consequence should be divided the blood will flow in irregular gushes, it will be difficult to stop, and may cause the death of the dog. However, there is little danger of such an unpleasant circumstance happening, and an ordinary degree of attention is quite sufficient to obviate it. The most convenient and best place to bleed a dog is to open a vein (the jugular vein) longitudinally in the side of the neck, around which a cord should be first tied. And if the sportsman is not expert at handling a lancet he may purchase a fleam at any of the shops where surgical instruments are sold, which, by means of springs, is so contrived that the greatest bungler need be under no apprehension. Those who sell this instrument will describe the method of using it; which, indeed, is so obvious, at first view, as to render elucidation superfluous in this place.

If, after the vein is opened, the animal should not bleed freely, pressure, a little below the orifice, will cause the blood to flow. When sufficient blood has been taken (eight ounces if a strong dog) the bleeding will, generally, subside. Should this not be the case, a tittle fur from a hat will stop it; or, the lips of the orifice may be drawn together with a needle and thread.

The vein should be opened longitudinally, as I have already observed; as, if opened in a transverse direction, it may be difficult to stop the bleeding, owing to the circumstance of the incision opening every time the dog holds down or stretches his head.

Caustic, or hot iron will stop a bleeding, even when an artery is divided; or it may be sewn up.]