Ruins at Aztec Springs. It will be seen that immediately to the right of the Springs is a large rectangular ruin in better preservation than the rest. This now “forms a great mound of crumbling rock from twelve to twenty feet in height, overgrown with artemisia, but showing clearly, however, its rectangular structure, adjusted approximately to the four points of the compass.” This house, from its massive walls, must have had an original height of at least forty feet. “The walls seem to have been doubled, with a space of seven feet between; a number of cross-walls at regular intervals indicate that this space has been divided into apartments, as seen in the plan.” Two low lines of rubbish cross the square, probably partition walls. Surrounding this house is a net-work of fallen walls, so completely reduced that none of the stones seem to remain in place. Mr. Holmes was at a loss to know whether to call them a cluster of irregular apartments, having low, loosely built walls, or whether they are the remains of imposing pueblos. In the group of ruins to the left of the spring are two well-defined circular estufas. Below the main mass of ruins, connected by low walls of ruins, is another great square, nearly two hundred feet in dimensions. One wall seems to have consisted of a row of apartments; the other walls served to simply inclose the square, near the center of which was another large estufa. Several important conclusions can be drawn from a study of this locality. The spring, now dry, was once evidently the source of a considerable stream. Whether the group of low ruins were collections of small houses, or remains of imposing pueblos, we need not doubt that the walls of the square inclosures were composed of pueblo houses. The estufas were probably in all respects similar to those of the present inhabited pueblos. The country around, now so dry and barren, must once have supported considerable population. As to the period of abandonment, we have nothing to guide us. Being an agricultural settlement, it was probably abandoned at an earlier date than the cave-dwellings and cliff-houses of the cañons of the vicinity. The reason for this will appear subsequently. The site of this ruin, as well as for a long distance around, is covered with pieces of broken pottery. We notice that the spring has only lately gone dry. This illustrates the changes now taking place all through the country. It is drying up, and this process has been in operation for a long while.