golden blossoms. Cacti of various kinds vie with one another in producing the most brilliant flowers, odorless but gorgeous. But in a few weeks all this brightness fades and the country resumes the colorless monotonous aspect which characterizes it.

July and August and sometimes part of September comprise the rainy season. This period is marked by sudden heavy showers of short duration, and the sandy soil absorbs sufficient moisture to nourish the grass and herbage for a time; but most of the water finds its way directly into deep-cut channels and thence in heavy torrents to the deep canyons of the San Juan and the Colorado, where it is lost. A small portion of the rainfall and much of the snow water percolates the soil and the porous sandstones which compose the region, and issues in small springs along the edges of the mesas and in the little canyons; but these last only a few months, and they fail in the time of greatest need—in the hot summer days when the grass is dry and brittle and the whole country is parched.

The direct dependence of the savage on nature as he finds it is nowhere better illustrated than on the Navaho reservation. In the three essentials of land, water, and vegetation, his country is not an ideal one. The hard conditions under which he lives have acted directly on his arts and industries, on his habits and customs, and also on his mind and his mythology. In one respect only has he an advantage: he is blessed with a climate which acts in a measure as an offset to the other conditions and enables him to lead a life which is on the whole not onerous.

In these dry elevated regions the heat is never oppressive in the day and the nights are always cool. Day temperatures of 120° or more are not uncommon in the valleys in July and August, but the humidity is so slight that such high readings do not produce the discomfort the figures might imply. In his calico shirt and breeches the Navaho is quite comfortable, and in the cool of the evening and night he has but to add a blanket, which he always has within reach. The range between the day and night temperature in summer is often very great, but the houses are constructed to meet these conditions; they are cool in hot weather and warm in cold weather.

The extreme dryness of the air has another advantage from the Indian point of view, in that it permits a certain degree of filthiness. This seems inseparable from the Indian character, but it would be impossible in a moist climate; even under the favorable conditions of the plateau country many of the tribes are periodically decimated by smallpox.

HABITS OF THE PEOPLE

The habits of a people, which are to a certain extent the product of the country in which they live, in turn have a pronounced effect on their habitations. New Mexico and Arizona came into the possession of the United States in 1846, and prior to that time the Navaho lived chiefly by war and plunder. The Mexican settlers along the Rio Grande and the Pueblo Indians of the same region were the principal contributors to their welfare, and the thousands of sheep and horses which were stolen from these people formed the nucleus or starting point of the large flocks and herds which constitute the wealth of the Navaho today.

The Navajo reservation is better suited for the raising of sheep than for anything else, and the step from the life of a warrior and hunter to that of a shepherd is not a long one, nor a hard one to take. Under the stress of necessity the Navajo became a peaceable pastoral tribe, living by their flocks and herds, and practicing horticulture only in an extremely limited and precarious way. Under modern conditions they are slowly developing into an agricultural tribe, and this development has already progressed far enough to materially affect their house structures; but in a general way it may be said that they are a pastoral people, and their habits have been dictated largely by that mode of life.

Every family is possessed of a flock of sheep and goats, sometimes numbering many thousands, and a band of horses, generally several hundreds, in a few instances several thousands. In recent times many possess small herds of cattle, the progeny of those which strayed into the reservation from the numerous large herds in its vicinity, or were picked up about the borders by some Navaho whose thrift was more highly developed than his honesty. The condition of the tribe, as a whole, is not only far removed from hardship, but may even be said to be one of comparative affluence.

Owing to the scarcity of grass over most of the country, and the difficulty of procuring a sufficient supply of water, the flocks must be moved from place to place at quite frequent intervals. This condition more than any other has worked against the erection of permanent houses. Yet the Navaho are by no means nomads, and the region within which a given family moves back and forth is extremely circumscribed.

In a general way the movements of a family are regulated by the condition of the grass and the supply of water. In a dry season many of the small springs cease to flow at an early date in the summer. Moreover, if a flock is kept too long in one locality, the grass is almost destroyed by close cropping, forcing the abandonment of that particular place for two or three years. When this occurs, the place will recover and the grass become good again if left entirely undisturbed for several years.

The usual practice is to take the flocks up into the mountains or on the high plateaus during the summer, quartering them near some spring or small stream, and when the snow comes they are moved down to the lower foothills or out into the valleys. In the winter both shepherds and sheep depend on the snow for their water supply, and by this means an immense tract of country, which otherwise would be a perfect waste, is utilized. As the snow disappears from the valleys the flocks are gradually driven back again into the mountains.

The heavy fall of snow in the mountains and its slow melting in spring makes that region far more fertile and grassy than the valleys, and were it possible to remain there throughout the year doubtless many families would do so. As it is, however, the feed is covered too deeply for the sheep to reach it, and during several months heavy snowdrifts make communication very difficult and at times impossible. In a few favored localities—usually small, well-sheltered valleys here and there in the mountains—some families may remain throughout the winter, but as a rule, at the first approach of the cold season and before the first snow flies there is a general exodus to the low-lying valleys and the low mesa regions, and the mountains are practically abandoned for a time.

During the rainy season pools and little lakes of water are formed all over the flat country, lasting sometimes several weeks. Advantage is taken of the opportunity thus afforded and the flocks are driven out on the plains and grazed in the vicinity of the water so long as the supply holds out, but as this is seldom prolonged more than a few weeks it is not surprising that the house erected by the head of the family should be of a very temporary nature. In fact the most finished house structures of these people must be temporary rather than permanent so long as the conditions sketched above prevail; in other words, so long as they depend principally on their sheep.

Another result of these conditions is that each family lives by itself and, as it were, on its own ground. Large communities are impossible, and while there are instances where eight or ten families occupy some place of exceptionally favorable location, these are rare. In fact to see even three or four hogáns together is remarkable. There are perhaps more hogáns in Canyon Chelly than in any other one locality, but the people who live