The Nahuatl name _acatl_ signifies "reed," "cane," or "stalk;" and, according to Ximenes and Brasseur, the Quiche-Cakchiquel _ah_ also signifies "reed," especially the "cornstalk" or "sugar cane." The Zapotec _quii_ has also the same signification, "reed," and Dr Brinton says _laa_ has the same meaning, but Dr Seler says he can not find it with this signification in the lexicons, nor do I find it in any to which I have access. The Maya and Tzental _ben_, however, presents a more serious difficulty in the attempt to bring it into harmony with the others. Dr Seler contents himself with reference to certain words which have _been_ or _ben_ as their root. This root, he says, signifies "consumed," and the words to which he refers mean "to be consumed," "to waste away," "to fail, be lacking, go away." This is also the signification to which Dr Brinton refers. "I find," he says, "that in Tzental the dried cornstalk (caña de mais seco) is called _cagh-ben_, and from this I doubt not this day-name in that dialect and the Maya was taken and syncopated. The verb _ben_ or _been_ in Tzental means 'to walk, to go,' but in the above compound the _ben_ is from the Maya stem _benel_, 'to be used up, to be dead.'" The opinion of Dr Seler, above stated, that the symbol of this day originated from the delineation of the plaited reed or mat, is based on the representation of the mat both in symbols and figures in the Mexican and Maya codices. Some of these are shown in our plate LXVI, 21 to 24. The first, 21, is from the Mendoza Codex, and is found also in Tro. 20*d. These are undoubtedly intended to denote mats or something of a kindred nature. The same figure is seen on the roofs of temples and houses, one of which is shown in LXVI, 22, from Tro. 10*c. In these instances they appear to indicate the thatching with which the roof is covered. The form is sometimes varied, as in LXVI, 23, from Tro. 10*a. The symbol which, it is presumed, refers to the mat as seen in Tro. 21*d, is given in LXVI, 24; that representing the house in Tro. 10*c is seen in LXVI, 25; another of a slightly different form, from Tro. 7*c, in LXVI, 20; and another, referring also to a house or to the roof, as Dr Seler supposes, is given in LXVI, 27.