discharges into Salt river about 10 miles south of McDowell and about 25 miles east of Phoenix, at an elevation of less than 1,800 feet above the sea. The fall from Verde to McDowell, a distance of about 65 miles, is about 1,500 feet The whole course of the river is but little over 150 miles. The small streams which form the river unite on the eastern side of Big Chino valley and flow thence in a southerly and easterly direction until some 12 miles north of Verde the waterway approaches the edge of the volcanic formation known on the maps as the Colorado plateau, or Black mesa, and locally as “the rim.” Here the river is sharply deflected southward, and flows thence in a direction almost due south to its mouth. This part of the river is hemmed in on both sides by high mountain chains and broken every few hundred yards by rapids and “riffles.”

Its rapid fall would make the river valuable for irrigation if there were tillable land to irrigate; but on the west the river is hugged closely by a mountain chain whose crest, rising over 6,000 feet above the sea, is sometimes less than 2 miles from the river, and whose steep and rugged sides descend in an almost unbroken slope to the river bottom. The eastern side of the river is also closely confined, though

not so closely as the western, by a chain of mountains known as the Mazatzal range. The crest of this chain is generally over 10 miles from the river, and the intervening stretch, unlike the other side, which comes down to the river in practically a single slope, is broken into long promontories and foothills, and sometimes, where the larger tributaries come in, into well-defined terraces. Except at its head the principal tributaries of the Verde come from the east, those on the west, which are almost as numerous, being generally small and insignificant.

Most of the modern settlements of the Rio Verde are along the upper portion of its course. Prescott is situated on Granite creek, one of the sources of the river, and along other tributaries, as far down as the southern end of the great valley in whose center Verde is located, there are many scattered settlements; but from that point to McDowell there are hardly a dozen houses all told. This region is most rugged and forbidding. There are no roads and few trails, and the latter are feebly marked and little used. The few permanent inhabitants of the region are mostly “cow men,” and the settlements, except at one point, are shanties known as “cow camps.” There are hundreds of square miles of territory here which are never visited by white men, except by “cow-boys” during the spring and autumn round-ups.

Scattered at irregular intervals along both sides of the river are many benches and terraces of alluvium, varying in width from a few feet to several miles, and comprising all the cultivable land in the valley of the river. Since the Verde is a mountain stream with a great fall, its power of erosion is very great, and its channel changes frequently; in some places several times in a single winter season. Benches and terraces are often formed or cut away within a few days, and no portion of the river banks is free from these changes until continued erosion has lowered the bed to such a degree that that portion is beyond the reach of high water. When this occurs the bench or terrace, being formed of rich alluvium, soon becomes covered with grass, and later with mesquite and “cat-claw” bushes, interspersed with such cottonwood trees as may have survived the period when the terrace was but little above the river level. Cottonwoods, with an occasional willow, form the arborescent growth of the valley of the Verde proper, although on some of the principal tributaries and at a little distance from the river groves of other kinds of trees are found. All these trees, however, are confined to the immediate vicinity of the river and those of its tributaries which carry water during most of the year; and as the mountains which hem in the valley on the east and west are not high enough to support great pines such as characterize the plateau country on the north and east, the aspect of the country, even a short distance away from the river bottom, is arid and forbidding in the extreme.

Within the last few years the character of the river and of the country adjacent to it has materially changed, and inferences drawn from

present conditions may be erroneous. This change is the direct result of the recent stocking of the country with cattle. More cattle have been brought into the country than in its natural state it will support. One of the results of this overstocking is a very high death rate among the cattle; another and more important result is that the grasses and other vegetation have no chance to seed or mature, being cropped off close to the ground almost as soon as they appear. As a result of this, many of the river terraces and little valleys among the foothills, once celebrated for luxuriant grass, are now bare, and would hardly afford sustenance to a single cow for a week. In place of strong grasses these places are now covered for a few weeks in spring with a growth of a plant known as “filaree,” which, owing to the rapid maturing of its seeds (in a month or less), seems to be the only plant not completely destroyed by the cattle, although the latter are very fond of it and eat it freely, both green and when dried on the ground. As a further effect of the abundance of cattle and the scarcity of food for them, the young willows, which, even so late as ten years ago, formed one of the characteristic features of the river and its banks, growing thickly in the bed of the stream, and often forming impenetrable jungles on its banks, are now rarely seen.

Owing to the character of the country it drains, the Rio Verde always must have been subject to freshets and overflows at the time of the spring rains, but until quite recently the obstructions to the rapid collection of water offered by thickly growing grass and bushes prevented destructive floods, except, perhaps, on exceptional occasions. Now, however, the flood of each year is more disastrous than that of the preceding year, and in the flood of February, 1891, the culminating point of intensity and destructiveness was reached. On this occasion the water rose in some places over 20 feet, with a corresponding broadening in other places, and flowed with such velocity that for several weeks it was impossible to cross the river. As a result of these floods, the grassy banks that once distinguished the river are now but little more than a tradition, while the older terraces, which under normal circumstances would now be safe, are being cut away more and more each year. In several localities near Verde, where there are cavate lodges, located originally with especial reference to an adjacent area of tillable land, the terraces have been completely cut away, and the cliffs in which the cavate lodges occur are washed by the river during high water.

DISTRIBUTION AND CLASSIFICATION OF RUINS.

All the modern settlements of the lower portion of the Verde valley are located on terraces or benches, and such localities were also regarded favorably by the ancient builders, for almost invariably where a modern settlement is observed traces of a former one will also be found. The former inhabitants of this region were an agricultural people, and their villages were always located either on or immediately adjacent to some area of tillable soil. This is true even of the cavate lodges, which are often supposed to have been located solely with reference to facility of defense. Owing to the character of the country, most of the tillable land is found on the eastern side of the river, and as a