The Aztecs had various emblems for expressing such things as, from their nature, could not be directly represented by the painter; as, for example, the years, months, days, the seasons, the elements, the heavens, and the like. A “tongue” denoted speaking; a “footprint,” travelling; a “man sitting on the ground,” an earthquake. These symbols were often very arbitrary, varying with the caprice of the writer; and it requires a nice discrimination to interpret them, as a slight change in the form or position of the figure intimated a very different meaning.[147] An ingenious writer asserts that the priests devised secret symbolic characters for the record of their religious mysteries. It is possible. But the researches of Champollion lead to the conclusion that the similar opinion formerly entertained respecting the Egyptian hieroglyphics is without foundation.[148] Lastly, they employed, as above stated, phonetic signs, though these were chiefly confined to the names of persons and places; which, being derived from some circumstance or characteristic quality, were accommodated to the hieroglyphical system. Thus, the town _Cimatlan_ was compounded of _cimatl_, a “root,” which grew near it, and _tlan_, signifying “near;” _Tlaxcallan_ meant “the place of bread,” from its rich fields of corn; _Huexotzinco_, “a place surrounded by willows.” The names of persons were often significant of their adventures and achievements. That of the great Tezcucan prince Nezahualcoyotl signified “hungry fox,” intimating his sagacity, and his distresses in early life.[149] The emblems of such names were no sooner seen, than they suggested to every Mexican the person and place intended, and, when painted on their shields or embroidered on their banners, became the armorial bearings by which city and chieftain were distinguished, as in Europe in the age of chivalry.[150] But, although the Aztecs were instructed in all the varieties of hieroglyphical painting, they chiefly resorted to the clumsy method of direct representation. Had their empire lasted, like the Egyptian, several thousand years, instead of the brief space of two hundred, they would doubtless, like them, have advanced to the more frequent use of the phonetic writing. But, before they could be made acquainted with the capabilities of their own system, the Spanish Conquest, by introducing the European alphabet, supplied their scholars with a more perfect contrivance for expressing thought, which soon supplanted the ancient pictorial character.[151]