THE SOUTHEASTERN SECTION OF THE BLACK MESA RESERVE.

The southeastern portion of the reserve remains to be considered. The map shows this to be a rectangular area, about thirty by fifty miles in extent, lying between the White Mountain Indian Reservation and the western border of New Mexico, and covering the adjacent parts of Apache and Graham counties. It includes the eastern part of the White Mountains, which culminate in Ord and Thomas peaks, rising respectively to 10,266 feet and to 11,496 feet, on the White Mountain Indian Reservation, just off the western border of the Forest Reserve. This section of the reserve is strikingly more varied in physical conditions than the northern portion, as will be shown by the following description:

The northwestern part of this section, next to the peaks just mentioned, is an elevated mountainous plateau country forming the watershed between the extreme headwaters of the Little Colorado on the north and the Black and San Francisco rivers, tributaries of the Gila, on the south. The divide between the heads of these streams is so low that in the midst of the undulating country, where they rise, it is often difficult to determine at first sight to which drainage some of the small tributaries belong. This district is largely of volcanic formation, and beds of lava cover large tracts, usually overlaid with soil, on which the forest flourishes.

The entire northern side of this section is bordered by the sloping grassy plains of the Little Colorado, which at their upper border have an elevation of 6,500 to 7,500 feet, and are covered here and there with piñons, cedars and junipers, especially along the sides of the canyons and similar slopes. At the upper border of this belt the general slope becomes abruptly mountainous, and rises to 8,000 or 8,500 feet to a broad bench-like summit, from which extends back the elevated plateau country already mentioned. This outer slope of the plateau is covered with a fine belt of yellow pine forests, similar in character to that found in the northern part of the reserve. Owing to the more abrupt character of the northerly slope of this belt, and its greater humidity, the forest is more varied by firs and aspens, especially along the canyons, than is the case further north. Here and there along the upper tributaries of the Little Colorado, small valleys open out, which are frequently wooded and contain beautiful mountain parks.

The summit of the elevated plateau country about the headwaters of the Little Colorado and Black rivers (which is known locally as the "Big Mesa"), is an extended area of rolling grassy plain, entirely surrounded by forests and varied irregularly by wooded ridges and points of timber. This open plain extends in a long sweep from a point a few miles south of Springerville westward for about fifteen miles along the top of the divide to the bases of Ord and Thomas peaks. These elevated plains are separated from those of the Little Colorado to the north by the belt of forests already described as covering the abrupt northern wall of the plateau. On the other sides of the "Big Mesa" an unbroken forest extends away over the undulating mountainous country as far as the eye can reach. The northerly slopes of the higher elevations in this section are covered with spruce forest.

The most varied and beautiful part of the entire Black Mesa Reserve lies in the country extending southeasterly from Ord and Thomas peaks and immediately south of the "Big Mesa." This is the extreme upper part of the basin of Black River, which is formed by numerous little streams rising from springs and wet meadows at an elevation of from 8,500 to 9,500 feet. The little meadows form attractive grassy openings in the forest, covered in summer with a multitude of wild flowers and surrounded by the varied foliage of different trees and shrubs. The little streams flow down gently sloping courses, which gradually deepen to form shallow side canyons leading into the main river. Black River is a clear, sparkling trout stream at the bottom of a deep, rugged box canyon, cut through a lava bed and forming a series of wildly picturesque views. The sides of Black River Canyon and its small tributaries are well forested. On the cool northerly slope the forest is made up of a heavy growth of pines, firs, aspens and alder bushes, which give way on the southerly slope, where the full force of the sun is felt, to a thin growth of pines, grass and a little underbrush.

At the head of Black River, between 8,000 and 9,000 feet, there are many nearly level or gently sloping areas, sometimes of considerable extent. These are covered with open yellow pine forests, with many white-barked aspens scattered here and there, and an abundance of grasses and low bushes. This was once a favorite summer country for elk, and I have seen there many bushes and small saplings which had been twisted and barked by bull elk while rubbing the velvet from their horns.

Immediately south and east of Black River lies the Prieto Plateau, a well wooded mountain mass rising steeply from Black River Canyon to a broad summit about 9,000 feet in altitude. The northerly slopes of this plateau, facing the river, are heavily forested with pines, firs, aspens and brushy undergrowth, and are good elk country. The summit is cold and damp, with areas of spruce thickets and attractive wet meadows scattered here and there. Beyond the summit of the plateau, to the south and east, the country descends abruptly several thousand feet, in a series of rocky declivities and sharp spur-like ridges, to the canyon of Blue River, a tributary of the San Francisco River. This slope, near the summit, is overgrown with firs, aspens and pines, which give way as the descent is made, to piñons, cedar and scrubby oak trees and a more or less abundant growth of chaparral. Small streams and springs are found in the larger canyons on this slope, while far below, at an altitude of about 5,000 feet, lies Blue River.

The country at the extreme head of Blue River forms a great mountain amphitheater, with one side so near the upper course of Black River that one can traverse the distance between the basins of the two streams in a short ride. The descent into the drainage of Blue River is very abrupt, and is known locally as the "breaks" of Blue River. The scenery of these breaks nearly, if not quite, equals that on "The Rim" of Tonto Basin in its wild magnificence. The vegetation on the breaks shows at a glance the milder character of the climate, as compared with that of the more elevated area about the head of Black River. In the midst of the shrubbery growth on the breaks there is a fine growth of nutritious grasses, which forms excellent winter forage.

The entire southern part of the reserve lying beyond the Prieto Plateau is an excessively broken mountainous country, with abrupt changes in altitude from the hot canyons, where cottonwoods flourish, to the high ridges, where pines and firs abound.

The northeastern part of the section of the reserve under consideration is cut off from the rest by the valley of Nutrioso Creek, a tributary of the Little Colorado, and by the headwaters of the San Francisco River. It is a limited district, mainly occupied by Escudilla Mountain, rising to 10,691 feet, and its foothills. Escudilla Mountain slopes abruptly to a long truncated summit, and is heavily forested from base to summit by pines, aspens and spruces. On the south the foothills merge into the generally mountainous area. On the north, at an altitude of about 8,000 feet, they merge into the plains of the Little Colorado, varied by grassy prairies and irregular belts of piñon timber.

The upper parts of the Little Colorado and Black Rivers, above 7,500 feet, are clear and cold, and well stocked with a native species of small brook trout.

Owing to the generally elevated character of the southeastern section of the Black Mesa Reserve, containing three mountain peaks rising above 10,000 feet, the annual precipitation is decidedly greater than elsewhere on the reserve. The summer rains are irregular in character, being abundant in some seasons and very scanty in others; but there is always enough rainfall about the extreme head of Black River to make grass, although there is always much hot, dry weather between May and October. The fall and winter storms are more certain than those of summer, and the parts of the reserve lying above 8,000 feet are usually buried in snow before spring—frequently with several feet of snow on a level. The amount of snow increases steadily with increase of altitude. Some of the winter storms are severe, and on one occasion, while living at an altitude of 7,500 feet, I witnessed a storm during which snow fell continuously for nearly two days. The weather was perfectly calm at the time, and after the first day the pine trees became so loaded that an almost continual succession of reports were heard from the breaking of large branches. At the close of the storm there was a measured depth of 26 inches of snow on a level at an altitude of 7,500 feet. A thousand feet lower, on the plains of the Little Colorado, a few miles to the north, only a foot of snow fell, while at higher altitudes the amount was much greater than that measured.

The summer temperatures are never excessive in this section, and the winters are mild, although at times reaching from 15 to 20 degrees below zero. Above 7,500 feet, except on sheltered south slopes, snow ordinarily remains on the ground from four to five months in sufficient quantity to practically close this area from winter grazing. Cattle, and the antelope which once frequented the "Big Mesa" in considerable numbers, appeared to have premonitions of the coming of the first snow in fall. On one occasion, while stopping at a ranch on the plains of the Little Colorado, just below the border of the Big Mesa country, in November, I was surprised to see hundreds of cattle in an almost endless line coming down from the Mesa, intermingled with occasional bands of antelope. They were following one of the main trails leading from the mountain out on the plains of the Little Colorado. Although the sun was shining at the time, there was a slight haziness in the atmosphere, and the ranchmen assured me that this movement of the stock always foretold the approach of a snowstorm. The following morning the plains around the ranch where I was stopping were covered with six inches of snow, while over a foot of snow covered the mountains. Bands of half-wild horses ranging on the Big Mesa show more indifference to snow, as they can dig down to the grass; but the depth of snow sometimes increases so rapidly that the horses become "yarded," and their owners have much difficulty in extricating them.

The southerly slopes leading down from the divide to the lower altitudes along the Black River and the breaks of the Blue, are sheltered from the cold northerly winds of the Little Colorado Valley, while the greater natural warmth of the situation aids in preventing any serious accumulation of snow. As a result, this entire portion of the reserve forms an ideal winter game range, with an abundance of grass and edible bushes. The varied character of the country about the head of Black River makes it an equally favorable summer range for game, and that this conjunction of summer and winter ranges is appreciated by the game animals is shown by the fact that this district is probably the best game country in all Arizona.