to U) U 0 ~ an 0 l Wo m0 El- ba *t fanl 1957 0 berkeley, california INFORMATION FOR AUTHORS The Kroeber Anthpological Society Papers publish articles in the general fIed o thropology, including those which it is difficult, for various reasons, to publish elsewhere. In addition to articles of theoret- ical interest, the Papers will welcome descriptive studies putting factual information on record, as well as bibliographies, linguistic texts, vocab- ularies and historical documents of anthropological interest. The Society welcomes student research papers of high quality. Manuscripts must be typewritten, doubled spaced on good quality 8-1/2 by 11 inch paper, and on one side of the page only. bdnotes (the Papers do not employ footnotes) and bibliography should be placed on separate sheets. The bibliographic style to be followed is that used in this number of the Papers. Authors will note that the bibliographic style is an extended version of that employed by the American Anthropologist. A style sheet containing further information concerning manuscripts and biblio- graphic style may be obtained from the Society upon request. Authors will receive without charge twenty reprints of their articles. Additional reprints may be ordered at the price of one cent per page. A small extra charge will be made if illustrations must be reproduced by photolithography. When notified of the acceptance of their manuscripts, authors will be asked how many additional reprints they desire. Manuscripts should be addressed to: Editor Kroeber Anthropological Society c/o The Department of Anthropology University of California Berkeley h, California ACKNOWLEDGMEMETS We wish to express our sincere thanks to all those whose generous assistance, through all phases of preparation and publication, made possible this issue of the Papers. We also gratefully acknowledge the financial assistance given us by the Wenner-Gren Foundation for Anthropological Research. Their generous grant for publishing equipment has made possible tie continuing success of our publication. The Executive Committee THE KROEBER ANTHROPOLOGICAL SOCIETY PAPERS Number 17 Fall, 1957 Published by the Kroeber Anthropological Society Sally Martin, President; Harumi Befu, Secretary; Grover Krantz, Treasurer; Leonard Plotnicov, Program Chairman; Stanley Byrne, Patricia Krotzer, Undergraduate Represen- tatives; Allan D. Coult, Bernd Iambert, Robert J. Squier, Co-editors. Address all correspondence to: The Kroeber Anthropological Society, c/o The Department of Anthropology, University of California, Berkeley 4, California. CONTENTS Harvard kiddle American Archaeological Seminar, 1955-56 An Introduction, by Gordon R. Willey 1 Pre-Classic Cultures in Mesoamerica: A Comparative Survey, by Michael D. Coe 7 The Classic Stage in Mesoamerica, by Donald W. Lathrap 38 The Postclassic Stage in Mesoamerica, by Jane Holden 75 iii