Age does not influence the liability to megrims. The colt, which has done no work, may exhibit the disease, and the old stager may not be subject to its attacks. One horse may die in the field from exertion and never display the malady; another shall be led through the streets and exemplify megrims in all its severity. One shall be merely dull--the disorder shall never get to the acute stage, though the fits may be repeated. This last, to the surprise of its master, shall every now and then stop, stare about, and proceed as though nothing were the matter. A second, when mounted, will be seized by a sudden impulse and run into shop doors; while a third, being between the shafts, will be possessed with an irrepressible desire to inspect the driver's boots. The horse often becomes suddenly stubborn. The reins are jagged and the whip plied to no purpose. The animal will only go its own way, which is commonly beset with danger. Perhaps, it may persist upon galloping, head foremost, down an open sewer; probably, it will rush up the steps leading to some mansion, and beat the door in with tremendous knocking. [Illustration: THE EXPRESSION CHARACTERISTIC OF REPEATED ATTACKS OF MEGRIMS.] Then come convulsions, followed by insensibility. If such a scene occur in a city, of course a crowd collects. Opinions are noisy and various; but a majority incline toward bleeding from the mouth. It is only to cut the palate, and a dozen knives, already opened, are proffered for the purpose. However, let the person in charge attend to no street suggestion. Let him at once seat himself upon the horse's head, and remain there till consciousness returns; then speak kindly to the sufferer, loosen the harness, and take care that the animal is perfectly recovered before it is permitted to rise. Dealers pretend that a horse subject to megrims is to be readily told. A horse, after repeated fits, is easily singled out; but the animal which has experienced only a single attack, no man could challenge. One attack, however severe may be its character, will not necessarily leave its impress upon the countenance. But the creature subject to such visitations soon assumes a heavy, flaccid, and stupid expression. The disease distorts no feature, but it leaves its mark behind; and any man, acquainted with the subject, would have no difficulty in picking from a drove the horse which has endured repeated fits of this disorder. Another class of knowing ones pretend they can drive a megrimed horse any distance, by simply keeping a wet cloth over the brain. This last experiment is, however, not inviting; and the author has yet to be assured by science that a wet rag over the brain would repose upon the primary seat of the disease.