HANDBOOK OF IHE TUItF. 57 



are four: Gray, white, flea-bitten, roan. Gray is composed 

 of mixed hairs of M'hite and those of a darker color, varying 

 from the black to the brown. Very light gray resembles white, 

 and shows but very few black or dark hairs. Light gray, with 

 more dark in very light. Ordinary gray, almost equally com- 

 posed of white and black hairs. Dark gray, with a prepon- 

 derance of dark or black hairs. Iron gray, which has a bluish 

 shade. Slate gray — a shade darker than iron gray. Clayey 

 gray, which has a very light yellowish tint. Isabella gray, a 

 mixture of white, yellow and dark hairs. Roan gray, a mix- 

 ture of white, dark, red or reddish hairs, the latter less 

 abundant than the former. White is a color easily recognized. 

 It is a dull milk or pigeon white color, opaque, with no reflec- 

 tion. Porcelain white, has a tint of porcelain china. Dirty 

 white, of a slightly yellowish tint. Rosy white, a color due to 

 the absence of the cutaneous pigment and to the thinness of 

 the hairs, leaving the discolored parts of the skin visible. 

 Roan is composed of three kinds of hairs — red, white and 

 black, or a bay modified by the admixture, more or less distinct, 

 of white. The red is light, ordinary wine red, or strawberry, 

 and the dark appears according to the predominance of the 

 different colors. III. In the third class there are found two 

 types : First, the Piebald or pied ; second, conjugate gray and 

 Isabella. The former is a union rather than an inter-mixture 

 of the white coat with one or another of the above described 

 derived coats. The animal presents a singular appearance, 

 covered with large, irregular white patches, variously situated 

 upon the body, but the colors do not blend. There are various 

 examples of this singular combination, as, technically, rusty 

 black pied ; dark fox-color pied ; flea-bitten rosy pied ; burnt 

 sorrel porcelain pied. The conjugate gray or Isabella is an 

 extremely rare coat, which is termed spotted or marbled. 



Cock Horse. A horse kept in the betting quotations 

 to deceive public backers, though known to the private layers 

 against him that he has no chance of winning. 



Coffin-bone. The bone forming the end of the foot, 

 and shaped like the hoof or horny box in which it is enclosed, 

 and which it supports. 



Coffin- joint. The joint at the upper part of the coflan- 

 bone, made by the union of the small pastern, eoffin and small 

 sesamoid bone, or navicular bones, the latter being set behind 

 and beneath the joint surface of the coffin-bone, in such a way 

 as to largely receive the weight of the small pastern. The 

 focus of weight in the foot is at this joint. 



