A PRELIMINARY REPORT ON CLAYS OE ELORIDA 
63 
taken for laboratory tests. The tests were made by the writer at Cornell 
University, Ithaca, New York. In a few cases samples of clay from de¬ 
posits not known at the time of the field work were later sent to the 
testing laboratory. 
PREVIOUS WORK ON ELORIDA CLAYS 
Much work has previously been done on the clays of Florida, par¬ 
ticularly on the sedimentary kaolins of Putnam and Lake counties and on 
the fuller’s earth of Gadsden and Manatee counties. Most of this 
material has been published by the United States Geological Survey, but 
some has appeared in the Annual Reports of the State Geologist of 
Florida and some in scientific journals. The literature dealing with the 
clays of the State has been freely used. Credit for such information has 
been given in the footnote references in each case. 
acknowledgments 
The writer desires to express his deep appreciation of the liberal 
and patient help accorded him by numerous individuals during the 
progress of this work. Dr. H. Ries kindly granted the use of the clay 
testing laboratory at Cornell University, and has given the author many 
helpful suggestions, Mr. Herman Gunter, State Geologist, rendered 
much assistance in planning and carrying out the field work. Mr. T. C. 
Adams, a graduate student at Cornell University, kindly permitted 
the use of a chart which appears as Fig. 1. A very great number 
of people in the various localities rendered invaluable aid, and many 
gave liberally of their time, in guiding and directing the party to the 
more important clay deposits. Among these may be mentioned Mr. 
J. E. 'Worthington of Lake Wales, Mayor F. D. Cosner and Mr. C. B. 
Taylor of Dade City, Mr. W. A. Fulton of Brooksville, Dr. T. S. Ken¬ 
nedy of Williston, Mr. W. B. Powell of Tavares, Secretary of the Lake 
County Chamber of Commerce, Mayor C. A. Vaughn and Mr. Allen 
Strait of Umatilla, Mr. C. H. Tedder, Secretary of the Chamber of Com¬ 
merce, Live Oak, Mr. H. D. Mendenhall, Consulting Engineer, of Lake¬ 
land, and numerous others. The brick and pottery manufacturers and 
superintendents of clay mining plants were uniformly courteous and 
generous in their assistance while the party was visiting their plants. 
