The introduction of domestic sheep among the pueblos has added a new and important element to their mode of living, but they seem never to have reached a clear understanding as to how these animals should be cared for. No forethought is exercised to separate the rams so that the lambs will be born at a favorable season. The flocks consist of sheep and goats which are allowed to run together at all tunes. Black sheep and some with a grayish color of wool are often seen among them. No attempt is made to eliminate these dark-fleeced members of the flock, since the black and gray wool is utilized in its natural color in producing many of the designs and patterns of the blankets woven by these people. The flocks are usually driven up into the corrals or inclosures every evening, and are taken out again in the morning, frequently at quite a late hour. This, together with the time consumed in driving them to and from pasture, gives them much less chance to thrive than those of the nomadic Navajo. In Tusayan the corrals are usually of small size and inclosed by thin walls of rude stone work. This may be seen in the foreground of Pl. XXI. Pl. CIX illustrates several corrals just outside the village of Mashongnavi similarly constructed, but of somewhat larger size. Some of the corrals of Oraibi are of still larger size, approaching in this respect the corrals of Cibola. The Oraibi pens are rudely rectangular in form, with more or less rounded angles, and are also built of rude masonry. [Illustration: Plate CV. Small square openings in Pueblo Bonito.] In the less important villages of Cibola stone is occasionally used for inclosing the corrals, as in Tusayan, as may be seen in Pl. LXX, illustrating an inclosure of this character in the court of the farming pueblo of Pescado. Pl. CX illustrates in detail the manner in which stone work is combined with the use of rude stakes in the construction of this inclosure. On the rugged sites of the Tusayan villages corrals are placed wherever favorable nooks happen to be found in the rocks, but at Zuñi, built in the comparatively open plain, they form a nearly continuous belt around the pueblo. Here they are made of stakes and brush held in place by horizontal poles tied on with strips of rawhide. The rudely contrived gateways are supported in natural forks at the top and sides of posts. Often one or two small inclosures used for burros or horses occur near these sheep corrals. The construction is identical with those above described and is very rude. It is illustrated in Fig. 109, which shows the manner in which the stakes are arranged, and also the method of attaching the horizontal tie-pieces. The construction of these inclosures is frail, and the danger of pushing the stakes over by pressure from within is guarded against by employing forked braces that abut against horizontal pieces tied on 4 or 5 feet from the ground. Reference to Pl. LXXIV will illustrate this construction.