I see no escape from the conclusions that the chief distinctions of race were established long before man acquired language. If the statement made by M. de Mortillet is true, that the absence of the mental tubercle, or bony excrescence in which the tongue is inserted, in a skull of the Neanderthal type found at La Naulette, indicates an absence of the faculty of speech, one race at least of palæolithic man would have existed in Europe before it had as yet invented an articulate language. Indeed it is difficult to believe that man has known how to speak for any very great length of time. * * * We can still trace through the thin disguise of subsequent modifications and growth the elements, both lexical and grammatical, out of which language must have arisen. * * * The beginnings of articulate language are still too transparent to allow us to refer them to a very remote era. * * * In fact the evidence that he is a drawing animal * * * mounts back to a much earlier epoch than the evidence that he is a speaking animal.
When a system of ideographic gesture signs prevailed and at the same time any form of artistic representation, however rude, existed, it would be expected that the delineations of the former would appear in the latter. It was but one more and an easy step to fasten upon bark, skins, or rocks the evanescent air pictures that still in pigments or carvings preserve their ideography or conventionalism in their original outlines. A transition stage between gestures and pictographs, in which the left hand is used as a supposed drafting surface, upon which the index draws lines, is exhibited in the Dialogue between Alaskan Indians in the First Annual Report of the Bureau of Ethnology (a). This device is common among deaf-mutes, without equal archeologic importance, as it may have been suggested by the art of writing, with which, even when not instructed in it, they are generally acquainted.
The execution of the drawings, of which the several forms of picture-writing are composed, often exhibits the first crude efforts of graphic art, and their study in that relation is of value.
When pictures are employed for the same purpose as writing, the conception intended to be presented is generally analyzed and only its most essential points are indicated, with the result that the characters when frequently repeated become conventional, and in their later form cease to be recognizable as objective portraitures. This exhibition of conventionalizing has its own historic import.
It is not probable that much valuable information will ever be obtained from ancient rock carvings or paintings, but they are important as indications of the grades of culture reached by their authors, and of the subjects which interested those authors, as is shown in the appropriate chapters following. Some portions of these pictures can be interpreted. With regard to others, which are not yet interpreted and perhaps never can be, it is nevertheless useful to gather together for synoptic study and comparison a large number of their forms from many parts of the world. The present collection shows the interesting psychologic fact that primitive or at least very ancient man made the same figures in widely separated regions, though it is not established that the same figures had a common significance. Indications of priscan habitat and migrations may sometimes be gained from the general style or type of the drawings and sculptures, which may be divided into groups, although the influence of the environing materials must always be considered.
The more modern specimens of picture-writing displayed on skins, bark, and pottery are far more readily interpreted than those on rocks, and have already afforded information and verification as to points of tribal history, religion, customs, and other ethnologic details.
A criticism has been made on the whole subject of picture-writing by the eminent anthropologist, Dr. Andree, who, in Ethnographische Parallelen und Vergleiche (a), has described and figured a large number of examples of petroglyphs, a name given by him to rock-drawings and now generally adopted. His views are translated as follows:
But if we take a connected view of the petroglyphs to which the rock pictures, generally made with red paint, are equivalent, and make a comparison of both, it becomes evident that they are usually made for mere pastime and are the first artistic efforts of rude nations. Nevertheless, we find in them the beginnings of writing, and in some instances their transition to pictography as developed among North American Indians becomes evident.
It appears, therefore, that Dr. Andree carefully excludes the picture-writings of the North American Indians from his general censure, his conclusion being that those found in other parts of the world usually occupy a lower stage. It is possible that significance may yet be ascertained in many of the characters found in other regions, and perhaps this may be aided by the study of those in America; but no doubt should exist that the latter have purpose and meaning. The relegation to a trivial origin of such pictographs as are described and illustrated in the present work will be abandoned after a thorough knowledge of the labor and thought which frequently were necessary for their production. American pictographs are not to be regarded as mere curiosities. In some localities they represent the only intellectual remains of the ancient inhabitants. Wherever found, they bear significantly upon the evolution of the human mind.
Distrust concerning the actual significance of the ancient American petroglyphs may be dispelled by considering the practical use of similar devices by historic and living Indians for purposes as important to them as those of alphabetic writing, these serving to a surprising extent the same ends. This paper presents a large number of conclusive examples. The old devices are substantially the same as the modern, though improved and established in the course of evolution. The ideography and symbolism displayed in these devices present suggestive studies in psychology more interesting than the mere information or text contained in the pictures. It must also be observed that when Indians now make pictographs it is with intention and care—seldom for mere amusement. Even when the labor is undertaken merely to supply the trade demand for painted robes or engraved pipes or bark records, it is a serious manufacture, though sometimes only imitative and not intrinsically significant. In all other known instances in which pictures are made without such specific intent as is indicated under the several headings of this work, they are purely ornamental; but in such cases they are often elaborate and artistic, not idle scrawls.