Did he draw in rude outline on his skin tent figures of men transfixed with arrows as many as he had slain enemies, his education was rapidly advancing.

He had mastered the elements of _picture writing_, beyond which hardly the wisest of his race progressed.

Figures of the natural objects connected by symbols having fixed meanings make up the whole of this art.

The relative frequency of the latter marks its advancement from a merely figurative to an ideographic notation.

On what principle of mental association a given sign was adopted to express a certain idea, why, for instance, on the Chipeway scrolls a circle means _spirits_, and a horned snake _life_, it is often hard to guess.