I saw rye, barley and oats growing wild by self-propagation in the mountain valleys of Colorado the present season; and also the wild pea, whose stunted seeds had the taste of the cultivated pea. Turnips, onions, tomatoes, and hops are found growing wild in the Pine River Valley, and the pie-plant or rhubarb is said to grow luxuriantly in the Elk Mountain valleys. I also saw wild flax and the gourd growing by self-propagation in the valley of the Animas. Currants, gooseberries, raspberries, and strawberries are found in the mountain valleys in numerous places, together with flowering plants of many species and varieties. Tiny forms of flowering plants are to be seen above patches of snow in places where the snow had recently melted. This fecundity of plant-life from ten to twelve thousand feet above sea level, and the relation of these mountain tributaries to the San Juan, which runs from east to west, not remotely from the base of these mountains, in such a manner as to invite and receive into its lap, so to express it, the vegetable wealth developed in these mountain chains, are facts that force themselves upon the attention of the observer.
The altitude of the San Juan Valley ranges from seven thousand feet at Pagosa Springs to five thousand nine hundred and seventy feet at the mouth of the Animas, and diminishing to four thousand four hundred and forty-six feet near the point where it empties into the Colorado (Hayden's Atlas of Colorado, Sheet 111). The altitude at Conejos is seven thousand eight hundred and eighty feet (ib.,) which is about as great an elevation as admits of the successful cultivation of maize. I noticed in a field of maize growing at Conejos that the stalk grew only about three feet high, and that the ear grew out of it but six inches from the ground. Specimens of the ear we obtained showed that it was about five inches long, with the kernel small and flinty. The ear is in four colors, white, red, yellow, and black, each being one or the other of these colors. In a few cases two colors were intermixed in the same ear. It seemed probable that this the primitive maize of the American aborigines, from which all other varieties have been developed. A few cobs which we found at a cliff house on the Mancos River corresponded with the Conejos ear in size, and were probably the same variety. Afterwards at Taos I found the same ear in white, red, yellow, and black; the staple maize now cultivated at this pueblo, but much larger. I brought away several fine ears saved for seed. One black ear measured twelve inches in length, with twelve rows of kernels, while the white variety, both at Conejos and Taos, had each fourteen rows.
Finally, a dry country, neither excessively hot nor moist, like the San Juan region, would seem to be most favorable for the development and self-propagation of maize as well as plants until man appeared for their domestication. These are but speculations, but if they should prompt further investigations concerning the place of nativity of this wonderful cereal, which has been such an important factor in the advancement of the Indian family, and which is also destined to prove such a support to our own, these suggestions will have not been made in vain.]
CHAPTER IX.
HOUSES OF THE MOUND-BUILDERS.
The general view of the house-life and houses of the Indian tribes thus far presented will tend to strengthen the hypothesis about to be stated concerning the earth-works of the Mound-Builders. Apart from the explanation that the long-houses of the Northern Tribes and the joint-tenement house of the Sedentary Indians are capable of affording, they are wholly inexplicable. The Mound-Builders worked native copper, cultivated maize and plants, manufactured pottery and stone implements of higher grade than the tribes of the Lower Status of barbarism; and they raised earth-works of great magnitude, superior to any works of the former tribes. They fairly belong to the class of Sedentary Village Indians, though not in all respects of an equal grade of culture and development. Their embankments, which inclosed a rectangular space, were in all probability, the foundations upon which they erected their houses. It is proposed to consider these embankments under this hypothesis.
Under the name of Mound-Builders certain unknown tribes of the American aborigines are recognized, who formerly inhabited as their chief area the valley of the Ohio and its tributary streams. Traces of their occupation have been found in other places, from the Gulf of Mexico to Lakes Erie and Superior, and from the Alleghanies to the Mississippi, and in some localities west of this river.
Without entering upon a discussion of these works, this chapter will be confined to four principal questions:
I. The house-life of the American aborigines, in the usages of which the Mound-Builders were necessarily involved.
II. The probable center from which the Mound-Builders emigrated into these areas.