ACKNOWLEDGEMENTS This study is based on research conducted from 1970 through 1975 at the University of Florida and in Bolivia and Peru, under the auspices of (1) a graduate teaching assistantship (1970-71) in the Aymara Language Materials Project funded by Title VI of the National Defense Education Act, (2) a National Science Foundation graduate fellowship (1971-74), and (3) a University of Florida College of Arts and Sciences graduate fellowship (1974-75). To the sources of that support I wish to express my deep appreciation. Special thanks are due also to my parents, Ellis Ormsbee Briggs and Lucy Barnard Briggs, who gave me financial and moral support throughout my doc- toral studies. My field work in Bolivia was authorized by the Instituto Nacional de Estudios Lingiifsticos (INEL) and facilitated by the Instituto de Lengua y Cultura Aymara (ILCA). My field work in Peru was authorized by the Instituto Nacional de Investigaci6n y Desarrollo de la Educaci6n (INIDE). Copies of this study are being made available to the three named entities, for whose coopera- tion I am very grateful. iv