LOOSENESS—is a laxity of habit, or debility of the intestines, which is constitutional with some horses; but in others is the effect of temporary disease; produced, probably, by an effervescent putrefaction of the excrements too long locked up in the intestinal canal, and at length suddenly and forcibly expelled by an effort of NATURE, to relieve herself from the offending cause. This latter is the kind of looseness not to be immediately checked, or restrained, by the aid of aromatic restringents; but rather to be assisted, and promoted, by a free use of warm mashes, and gruel, till the disorder has run itself off, and effected its own cure. Some horses are habitually irritable, and begin to dung _loose_ upon the most trifling occasions: young horses sometimes do so from a stranger's approaching them _suddenly_ after coming from a DEALER'S stable; this must arise from the memory of the _whip_: others from being put into expeditious action upon the road too _soon_ after their _water_ in a morning. HORSES fond of HOUNDS, and eager in the chase, will frequently begin to purge at the place of meeting, and continue so to do half a dozen times within an hour, when the superflux being thrown off, the excrements again become firm, and are evacuated with their usual solidity during the whole of the day. A warm cordial ball before the water, for two or three mornings in succession, is generally all that is necessary to be done upon such occasions. LUNGS.—The lungs of a horse are two elastic lobes, consisting of air vessels, blood vessels, lymphatics, nerves, and cellular membranes, possessing conjunctively the properties of contraction and expansion; nearly filling three parts of what is termed the CHEST, and may, without much deviation from the line of professional consistency, be pronounced the very mainspring of existence. It is the _good_ or _bad_ state of the LUNGS upon which the duration of life becomes in a proportional degree dependent; and by the perfect ease of inspiration, and respiration, health, and bodily strength, may in general be ascertained. The lungs are subject to inflammation, obstructions, tubercles, ulceration, and consumption; the cause of one and all originating in COLDS and COUGHS, produced by a sudden collapsion of the pores; when the perspirative matter being repelled, and thrown upon the circulation, the blood becomes sizey, viscid, and diseased; assuming some _leading_ feature of the ills described, which, suffered to continue _long_ without the proper means of counteraction, frequently attain a height too great for the power of medicine to subdue.