SMITHSONIAN INSTITUTION BUREAU OF AMERICAN ETHNOLOGY BULLETIN 74 EXCAVATION OF A SITE AT SANTIAGO AHUITZOTLA, D. F. MEXICO BY ALFRED M. TOZZER WASHINGTON GOVERNMENT PRINTING OFFICE 1921 LETTEK OF TRANSMITTAL Smithsonian Institution, Bureau of American Ethnology, Washington, D, C, January IS, 1920. Sir: I have the honor to transmit the accompanyino; manuscript, entitled"Excavationof a Siteat vSantiago Ahuitzothi,D. F. Mexico," by Prof. K. M. Tozzer, and to recommend its publication, subject to your approval, as a bulletin of this Bureau. Very resj)ectfully, J. Walter Fewkes, Chief. Dr. Charles D. Walcott, Secretary oftheSmithsonian Institution. 3