It cannot be denied that the forty-eight figures on the doorway are first divided into two groups of twenty-four by being placed to the right and left of the central figure. Each division of twenty-four is grouped as 3×8, which is also 6×4, and yielding a total of 12×4 or 4×12 figures.
Curiously enough the number 12 coincides not only with the number of heads exhibited by the central figure, but the entire bas-relief offers a certain agreement with the numerical divisions of Cuzco which I have summarized as having been divided into two halves and four quarters and subdivided into 12 wards, the names of which doubtlessly corresponded with those of their inhabitants. Personally I am inclined to consider that the purpose of the Tiahuanaco bas-relief was to establish a certain tribal organization and impose certain distinctive insignia upon each tribe. The inference that each sculptured figure was differentiated from the other by being painted in various colors is justified by Molina's account, already cited, that "in Tiahuanaco the 'Creator' had his chief abode, hence the superb edifices in that place, on which edifices were painted many dresses of Indians ... thus each nation uses the dress with which they invest their huaca and they say that the first that was born [in Tiahuanaco] was there turned into stones, others say that the first of their lineages were turned into falcons, condors and other animals and birds."
It is with deference, however, that I submit my conclusion and refer the question to the supreme authority of Drs. Stübel and Uhle and Mr. Bandelier, whose attainments and exhaustive researches in the region of Tiahuanaco qualify them to utter a final judgment upon this interesting subject. According to Dr. Max Uhle the civilization established at Tiahuanaco antedates that of the Incas. It may yet be proven that whilst Tiahuanaco was settled in remote times by colonists from the North, the Inca civilization was due to a later migration. It certainly appears that, in Tiahuanaco and Cuzco, the identical fundamental scheme of government and organization prevailed.
I shall yet have occasion to point out that in Mexico and Yucatan and Central America there are also monuments exhibiting multiples of 12 and 4 and also 16 chieftains. Meanwhile it is worth while to note here briefly, some analogies to Mexican and Maya antiquities found in Peru.