ILLUSTRATIONS. 



PLATES. PLATES TO FACE 



Plate I. Topographic map of the Floridian Plateau, showing the submarine 



and subaerial topography io8 



2. Map of Florida keys, on which are shown the station numbers of 



the bottom samples 114 



3. Map showing Caesars Creek and Old Rhodes banks 144 



4. Geologic map of Florida 146 



5. Topographic map of Peninsular Florida with the principal drainage 



lines emphasized 148 



6. (o) Cape Florida, Key Biscayne, showing surface of siliceous sand 



and cocoanut palms 185 



(6) Cape Florida, Key Biscayne, showing surface of siliceous sand 



and sea-grape 185 



(c) The Marquesas, south side, beach ridge of calcareous sand in 



the foreground, mangroves in the distance 185 



7. (a) Loggerhead Key, showing bay cedars and loose calcareous sand 185 



(b) Loggerhead Key, western beach, northeast of light-house, show- 



ing passage of beach curve from indurated material along 

 water's edge into that of the loose material lying above it.. 185 



(c) Edge of the Everglades, near Miami, showing saw-grass 185 



(d) Edge of the Everglades, near Miami, showing a lily pad 185 



8. (a) Miami oolite, pine lands, outskirts of Miami 185 



(b) Erosion by sea-spraj^ Picquet Rocks, Bahamas, western shore, 



distance 1 5 feet 185 



(c) Erosion by sea-spray. Gun Key, Bahamas, western shore 185 



9. Young mangroves, showing stages of development from the pod. 



The four small figures represent pods plucked from the tree 185 



10. Young mangroves: (o) and (6) shoal about two miles north of 



Pigeon Key, water about one foot deep; (c) and (d) shoal 



upper end of Long Island, water about one foot deep 185 



11. Mangroves, Miami River 185 



12. (a) Mangrove roots. Pigeon Key 185 



(b) " Black mangroves," Pigeon Key 185 



13. (a) Cross-bedded calcareous sandstone, probably agolian, eastern 



side of Gun Key, Bahamas 185 



(b) Miami oolite exposure, Miami, showing cross-bedding 185 



14. (a) Cross-bedding by water in an Eocene exposure. Central of 



Georgia Railwaj', two miles northeast of Andersonville, Georgia 185 



(b) Mud cracks, surface of Key West oolite, Big Pine Key 185 



(c) Surface of Key West oolite, Summerland Key 185 



15. (a) Surface of Key West oolite, Boca Grande Key 185 



(b) Key Largo limestone, southern end of Old Rhodes Key 185 



(c) Coral head in Key Largo limestone. Key Vaca 185 



TEXT FIGURES. 



PAGE 



Fig. I. Tortugas, East Key. west side looking north. Note vegetation on 



the summit of the key no 



2. Middle Key, looking north along the axis. This key was washed 



away during a storm on June 28, 1909, but was restored between 

 August, 1909, and May, 1910 no 



3 . Current chart of Florida waters 140 



4. Map of the Florida Coast from the mouth of St. Marj^'s River to the 



mouth of St. John's River 143 



5. Map of the Florida keys in the vicinity of St. Augustine 143 



6. Map of Cape Canaveral '. 144 



103 



