CONTENTS. 
Topography—Continued. f > w.k 
Bedrock surface ...A . |<)[ 
Origin .. 103 
Cypress swamps . 193 
Coastal swamps ..... 104 
The keys . 195 
The Florida reef . 100 
Shore line topography . 493 
Waste and growth of the mainland and keys. 200 
Recent changes of level. 201 
Geology . 202 
General statement . 202 
Pre-Pleistocene formations . 203 
General statement . 203 
Evidence from well records. 203 
Palm Beach . 204 
Key Vaca . 204 
Key West . 205 
Buck Key . 206 
Oligocene . ; . 207 
Thickness . 207 
Miocene and Pliocene . 207 
Lithology . 207 
Thickness . 207 
Source of siliceous materials... 207 
. Pleistocene . 208 
Unexposed beds . 208 
Exposed beds . 209 
Palm Beach limestone...'. 209 
Synonymy . 209 
Stratigraphic position . 209 
Lithologic characteristics .... 210 
Thickness . 210 
Physiographic expression . 210 
Paleontologic characteristics . 210 
Areal distribution . 210 
Structure . 211 
Miami oolite .:. 211 
Synonymy . 211 
Stratigraphic position . 212 
Lithologic characteristics ... 212 
Thickness .. 212 
Physiographic expression . 213 
Paleontologic characteristics . 213 
Areal distribution . 213 
Structure . 213 
Correlation . 214 
Key Largo limestone. 214 
Synonymy . 214 
Stratigraphic position . 215 
Lithologic characteristics . 216 
Thickness ...... 216 
Physiographic expression . 217 
