The remains of the ancient varieties of color, also, as noticed by Pliny, Solinus, and Columella, may still be discovered in the modern Merino. The plain and indeed the only reason that can be assigned for the union of black and gray faces with white bodies, in the same breed, is the frequent intermixture of black and white sheep, until the white prevails in the fleece, and the black is confined to the face and legs. It is still apt to break out occasionally in the individual, unless it is fixed and concentrated in the face and legs, by repeated crosses and a careful selection; and, on the contrary, in the Merino South-Down the black may be reduced by a few crosses to small spots about the legs, while the Merino hue overspreads the countenance. This hue--variously described as a velvet, a buff, a fawn, or a satin-colored countenance, but in which a red tinge not infrequently predominates, still indicates the original colors of the indigenous breeds of Spain; and the black wool, for which Spain was formerly so much distinguished, is still inclined to break out occasionally in the legs and ears of the Merino. In some flocks half the ear is invariably brown, and a coarse black hair is often discernible in the finest pile. [Illustration: A SPANISH SHEEP DOG.] The conquest, in the eighth century, by the Moors of those fine provinces in the south of Spain, so far from checking, served rather to encourage the production of fine wool. The conquerors were not only enterprising, but highly skilled in the useful arts, and carried on extensive manufactories of fine woollen goods, which they exported to different countries. The luxury of the Moorish sovereigns has been the theme of many writers; and in the thirteenth century, when the woollen manufacture flourished in but few places, there were found in Seville no less than sixteen thousand looms. A century later, Barcelona, Perpignan, and Tortosa were celebrated for the fineness of their cloths, which became staple articles of trade throughout the greater part of Europe, as well as on the coast of Africa. After the expulsion of the Moors, in the fifteenth century, by Ferdinand and Isabella, the woollen manufacture languished, and was, in a great degree, lost to Spain, owing to the rigorous banishment of nearly one million industrious Moors, most of whom were weavers. As a consequence, the sixteen thousand looms of Seville dwindled down to sixty. The Spanish government perceived its fatal mistake too late, and subsequent efforts to gain its lost vantage-ground in respect to this manufacture proved fruitless. During all that time, however, the Spanish sheep appear to have withstood the baneful influence of almost total neglect; and although the Merino flocks and Merino wool have improved under the more careful management of other countries, the world is originally indebted to Spain for the most valuable material in the manufacture of cloth.