If this precious exposition of the Zuñi social organization teaches us more about native method and system than all of the writings of the Spanish chroniclers put together, there is one important point which, strangely enough, is not touched upon, namely, the regulation of time. All information concerning native astronomy, and the subdivision of the years, the festival periods and the names of days, seems to have been withheld from Mr. Cushing by the Zuñi priesthood, if we are to assume that they possess a calendar. In Mexico, as I have already set forth, the calendar system is bound up in the scheme of social organization and it is impossible to separate them. I cannot but think that it must be the same with the Zuñis but that, as in ancient Mexico, only the priesthood were acquainted with the existence of a systematic calendar, and kept it a profound secret from the multitude, although the entire communal life and activities of the people were guided accordingly by their rulers, who had arranged a suitable time for all things, at proper seasons. Having obtained through Mr. Cushing invaluable material for the making of a composite image of the ancient American civilization let us now proceed to Yucatan, bearing in mind the native mode of thought and master-passion for systematization. A careful perusal of Cogolludo and Landa’s work affords such interesting glimpses into the past history of the inhabitants of the Yucatan peninsula, that they merit presentation in a separate publication. Suffice it for the present to refer more fully to a few leading facts which will be found to illustrate the development of the ancient civilization in the preceding pages. The native opinion already cited was that a great chief or lord, named Kukulcan, reigned at Chichen-Itza, Yucatan, whilst this was occupied by the Itza tribe, which was driven from it in about 270 A.D. by the Tutul-xius who were entitled “holy men.” Their name justifies Brasseur de Bourbourg’s inference that the conquerors may have been a Nahuatl tribe whose name was that of the much-prized blue-bird, Xiuh-tototl. At the same time the fact that the Maya word for supreme lord and Master (also applied to the divinity) is _Ciu-mil_ seems to indicate that there may be a deeper origin and that the Xiuh-tototl may have only been a rebus employed by the Mexicans to convey the sound of a Maya title, possibly “Kukul-Ciu,” if the above title “holy men” is to be regarded as a translation of Tutul-xiu.