The stratigraphic series concerns sedentary life after the invention of agriculture. Presumably a nomadic horizon preceded that of the first farmers, but few traces of this have so far been reported from southern Mexico and Central America. The earliest known specimens of the lowest level are not rudimentary but are well stylized, and opinions vary as to the length of time necessary for a theoretical formative stage. It seems necessary to consider this old civilization as a stratigraphic unit admitting the probability that true beginnings await the archæologist’s spade.
The culture of the lowest stratum is here called archaic, a word meaning old, but not necessarily primitive. The word “horizon” carries an implication of chronological succession, but it would not be wise to insist that archaic remains everywhere represent a dead chronological level. Archaic art is oldest in its place of origin, the highlands of Mexico and Central America, and in or near this general region, it was first succeeded by higher types. On the margin of its distribution archaic art, or at least the most striking traits of archaic art, lasted into much more recent times, and in some places may even have survived till the coming of the Spaniards. Even when every allowance is made for independent expressions which may find nearly the same form, it seems that remarkable homogeneity and continuity can be demonstrated for products of the archaic civilization of the New World.
Most of the evidence of the old civilization consists of ceramic objects, but there is also some stonework including implements, ornaments, and crude statues. Common household pottery shows local variations, but as a rule the archaic wares can be recognized as such by qualities of paste, shape, and decoration. The motives are simply geometric or realistic and there is a lack of formalized designs. One process of decoration has wide distribution and seems to have been invented well along in the archaic period. This is the process of negative painting in which the lines of the decorative pattern, originally applied in wax or pitch, stand out in the natural surface color of the pot against an over-painted background. This “batik” pottery extends from central Mexico to northern Peru.
The most interesting and important objects of archaic art in clay are human figurines executed in peculiar styles. These not only reflect details of dress, etc., but also seem to stand for a set of religious ideas. Especially a type of figurine representing a nude female appears to be an agricultural fetish, symbolizing the fecundity of Mother-Earth.
Stratification of Remains.
Atzcapotzalco was once an important center of the Tepanecan tribe situated on the shores of lake Texcoco. It was an early rival of Tenochtitlan, the Aztecan capital, and was conquered and partly destroyed in 1439. The principal modern industry of Atzcapotzalco is brick-making, and several mounds and much of the surface of the plain have been removed for this purpose. In the mounds are found many pottery objects of the late Toltecan period, while on the surface of the ground are encountered fragments of the typical Aztecan pottery in use when the Spaniards arrived.
Fig. 10. Atzcapotzalco Destroyed. The temple burns at the Place of the Ant.
The stratification of the plain varies in different places so far as the thickness of the different strata is concerned, but the order is always the same. At one locality it is as shown in [Fig. 11]. First comes a layer of fine soil of volcanic ash origin, probably deposited by the wind. This is five or six feet in thickness, yellowish at the top, and much darker towards the bottom, with streaks and discolorations. The Aztecan pottery is found close to the surface, while Toltecan pottery occurs in the middle and lower sections. Underneath the soil layers lies a thick stratum of water-bearing gravel mixed with sand. This gravel stratum is possibly the old bed of a stream that formerly entered Lake Texcoco near this point. In some places it is fifteen or eighteen feet in thickness. Scattered throughout the gravel are heavy, waterworn fragments of pots as well as more or less complete figurines of the archaic type.
