34 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 27 



ACKNOWLEDGMENTS 



The field work was made possible by a grant (G-9060) to the Allan 

 Hancock Foundation by the National Science Foundation. My gratitude 

 is extended to those persons and institutions listed by Hartman (1963). 

 This paper was written during my tenure at the Allan Hancock Founda- 

 tion 1957-1960 and at the Beaudette Foundation of California 1960- 

 1964, and I am indebted to those institutions for their support. Miss 

 Jacqueline M. Hampton of the Beaudette staff prepared several of the 

 figures and drafted all of the graphs. My thanks go especially to Dr. 

 Olga Hartman and Dr. K. O. Emery for their aid and cooperation, and 

 to Mrs. Dorothy M. Halmos and her staff of the Allan Hancock Li- 

 brary for interlibrary loans and reference work. 



