CONTENTS 
PACK 
ADMINISTRATIVE REPORT by E. H. Sellards. ...... 13 
Members of the State Survey force... 13 
Publications issued . .... 13 
Distribution of reports. 14 
Relation of the State Survey to other organizations. ................. 14 
The Survey library. 15 
Exhibition of geological material. 15 
The relation of the State Survey to the ownership of mineral bearing 
lands . 15 
Samples sent to the Survey for examination... 16 
Collection of statistical information. 16 
Financial statement . 17 
A PRELIMINARY REPORT ON THE GEOLOGY OF FLORIDA, 
with special reference to the Stratigraphy, by George Charlton 
Matson and Frederick G. Clapp. Prepared in cooperation between 
the United States Geological Survey and the Florida State Geo¬ 
logical Survey, under the direction of Thomas Wayland Vaughan 
Topography and drainage. 28 
General topographic features.•.. 28 
Rivers . 30 
Lakes and swamps ..... 31 
Lake region . 32 
Caverns . 32 
Sink holes .. 34 
Natural bridges ... 36 
Sand dunes . 37 
Springs . 37 
North and West Florida. 38 
Erosion features . 38 
Lakes . 38 
Sand dunes . 39 
Coastal region ....... 39 
Streams and ponds ... 39 
Ridges . 39 
Terraces . 39 
Shore lines . 40 
Coral reefs. 40 
Submerged continental border ... .. 40 
Bars ..... 40 
Sounds ..... 41 
Inlets . 41 
Tidal runways . 41 
Capes .. 42 
Soils . 43 
Origin . 43 
Classification .. 44 
Structure .... • 46 
Stratigraphic geology . 50 
Tertiary . 50 
Oligocene . 50 
Vicksburg group .. .*.. 50 
