In the Codex Cozcatzin the Aztec king Axayacatl is represented with the _xiuhuitzontli_, the turquois mosaic-work head-band.[70] In the selection of Ahuitzotl as king, Tezozomoc writes: They put on him the crown which was blue, of rich stone mosaic-work, (in shape) like a half miter called _xiuhtzolli_ (or _xihuitzolli_), and also placed on him, among other things, a netted mantle strewn with small stonework. This formed part of his costume when he went to the temple of Huitzilopochtli to worship. When adored by neighboring subjugated tribes he wore a crown of gold (adorned) with much stone mosaic-work of a half miter shape, and on the left shoulder was put a sash called _matemacatl_ which was all gilded and enameled with fine stone mosaic-work, which was also called _teocuitla cozehuatl_, as we now speak of a shoe-ribbon, and on the foot was placed something like an anklet of _acero_ [_sic_] strewn with emerald stones, all gilded.[71] Duran states that among the offerings buried with the Aztec king Ahuitzotl were “crowns of the fashion that they used, of gold and of stone mosaic-work.”[72] It is related by Tezozomoc that after the death of Netzahualpilli, king of Texcoco, Montezuma assembled the senate of Aculhuacan in order to select a new king. The choice fell on the fifth son, Quetzalacxoyatl. In the ceremony of investiture they placed on him “the blue crown or forehead-band decorated with stone mosaic-work.”[73] The Anonymous Conqueror writes: To guard the head, they carry things like the heads of serpents, tigers, lions, or wolves with open jaws, and the head of the man is inside the head of the creature as if it was being devoured. They are of wood covered over with feathers and with jewels of gold and precious stones, which is a wonderful sight.[74] From Alonso de Molina’s _Vocabulario Mexicano_ (Mexico, 1555, reprinted 1571) we are able to interpret the Nahuan words which occur in the chronicles in connection with the use of turquois in the decoration of various objects. The following are some of the more common: _nacochtli_, ear-plugs; _tentetl_, labret; _yacaxuitl_, nose-ornament; _copilli_, crown; _xiuhxayacatl_, mask of turquois mosaic; _xayacatl_, mask; _cactli_, sandal; _tilmatl_, mantle; _amaneahapantli_, mantle for lords richly wrought; _teopixcatla-quemitl_, vestment of priests; _ecaceuaztli_, fan; _chimalli_, shield; _teteotl_, stone idol; _tequacuilli_, large stone idol or statue; _xiuitl_, turquois; _tlaquauac xiuitl_, hard turquois; _xiuhtomolli_, turquois; _omichicauaztli_, bone musical instrument; _ayacachtli_, rattle. [Illustration: PL. XV MASK OF WOOD (FRAGMENT) WITH MOSAIC DECORATION MUSEUM OF THE AMERICAN INDIAN HEYE FOUNDATION, NEW YORK] EXISTING SPECIMENS OF MOSAIC