Dogs are subject to two kinds of colic; one arising from constipation of the bowels; the other is of a kind peculiar to dogs, apparently partaking of the nature of rheumatism, and also of spasm. From a sudden or violent exposure to cold, dogs become sometimes suddenly paralytic, particularly in the hinder parts, having great tenderness and pain, and every appearance of lumbago. In every instance of this kind, there is considerable affection of the bowels, generally costiveness, always great pain. A warm bath, external stimulants, but more particularly active aperients, remove the colic. Colic, arising from costiveness, is not in general violently acute from the pain it produces; sometimes it appears accompanied with more spasm than is immediately dependent on the confinement of the bowels. In the former give active aperients, as calomel with pil. cochiæ, i. e. aloetic pill, and clysters; in the latter, castor-oil, with laudanum and ether.—_Blaine._ COLLAR, _s._ A ring of metal put round the neck; the harness fastened about the horse’s neck. A collar of brawn is the quantity bound up in one parcel. COLLAR-BONE, _s._ The clavicle; the bones on each side of the neck. COLOUR, _s._ The appearance of bodies to the eye; hue, dye; the appearance of blood in the face; in the plural, a standard, an ensign of war. A general name given to the dyed wools and mohairs, which are used in forming the bodies of artificial flies. Mixing the wools, or producing, by a union of different colours, the exact shade of the body of the insect to be imitated, is justly reckoned the greatest difficulty of the art; and I have known many persons tie a fly with neatness and elegance, who never could turn out a killing one. Hence practical acquaintance with the ephemeræ, which are imitated, is absolutely requisite for tying, as without it, the handsomest fly is inefficient. To this may be ascribed the inferiority of the flies usually purchased in extensive fishing shops. Though, possibly, an elegant similitude of the intended insect in size and shape, they are, in tint and colouring, untrue to nature; and, as such, are easily discovered by the keen eye of the invited victim, and as certainly rejected. Without the precise colour of the fly is obtained, the handsomest production will be unsuccessful; and the neophyte will marvel that the basket of the rustic fisherman is filled, while his own showy imitations fail to rise a fish. In choosing colours the brightness of the tint is to be less regarded than the permanency of the dye. To produce, at the same time, a brilliant and lasting colour, requires time, trouble, and experience. But for all the disciple of Walton will be well repaid; for nothing can be more mortifying to an angler, than to see the tints of his fly fade after a few immersions in the water, and a short exposure to the sunshine.