Bowditch, Maya Numeration, Calendar and Astronomy. (Cambridge, Mass., 1910.) Payne, History of the New World, vol. ii, pp. 310–332. The beginner is strongly advised to peruse these works before approaching the subject in the pages of the older Spanish writers, most of whom possessed very hazy notions regarding it. By far the best textbook is that of Morley, who, although dealing with the Maya calendar at much greater length, writes with great clarity upon the Mexican system, which is indeed identical with the Maya tonalamatl in its simpler manifestations. Bowditch’s book is more for advanced students of the Maya hieroglyphical system, the senior wranglers of the subject, so to speak. But in places he dwells upon the Mexican tonalamatl in an illuminating and suggestive manner. The papers of Seler and other German writers on the tonalamatl, although most valuable, by no means possess the admirable clarity and simplicity of Morley’s invaluable essay. A good short article on the calendar is that of Dr. Preuss in Dr. Hastings’ Encyclopædia of Religion and Ethics, vol. iii, pp. 124 ff. A useful essay on the tonalamatl is that of de Jonghe, “Der alt-mexikanische Kalendar,” in Zeitschrift für Ethnologie, 1906; and in the Journal des Américanistes de Paris, New Series, vol. iii (Paris, 1906), pp. 197–228. A BIBLIOGRAPHY OF MEXICAN RELIGION The works contained in this bibliography are included because they refer to the religion of ancient Mexico. It must be distinctly understood that it does not aim at providing a comprehensive list of works on Mexican history or archæology or on the religion of the Maya. It is believed that no work of importance, old or new, which deals with Mexican religion has been omitted. The books contained in the first part are arranged in accordance with an estimate of their degree of importance to the student. Those in the second part are alphabetically arranged. The bibliography at the end of the appendix on the Tonalamatl should also be consulted. PART I (Works written by the earlier Spanish authors) Bernardino de Sahagun, Historia Universal de Nueva-España. (Mexico, 1829; London, 1830—in vol. vi of Lord Kingsborough’s Antiquities of Mexico.) French translation by Jourdanet and Siméon (Paris, 1880). J. Torquemada, Monarquia Indiana. (Madrid, 1723.) Torribio de Benavente (Motolinia), Historia de los Indios de Nueva-España. In Kingsborough’s Antiquities of Mexico, vol. ix, pp. 469 ff.; see also L. G. Pimentel, Memoriales de Fray Torribio de Motolinia (Paris, 1903), which contains materials not in the Historia. See also Icazbalceta. Fernando de Alva Ixtlilxochitl, Relaciones, in vol. ix of Kingsborough’s Antiquities of Mexico (London, 1830–1848). Edited by Alfredo Chavero (Mexico, 1891); Historia Chichimeca, in vol. ix of Kingsborough’s Antiquities of Mexico. Edited by Chavero (Mexico, 1892). Diego Muñoz Camargo, Historia de Tlascala. Edited by A. Chavero. (Mexico, 1892.)