INDEIX. 393 PAGE. St. Johns County, area of artesian flow in........ ................. 14 flowing well near Crescent"Lake ............... ...... 289 location and surface features Of ................... 141- 14:2 map of ..........................................' 43 water-bearing formations of ....................... 142 St. Johns River ..................................................... 92 elevation of headwaters of .............................. 182 swamps of ..................................:25-0-25 1, 287-290 St. Lucie County, area of artesian flow in............................ 193 location and surface features of....................... 192 water-bearing formations of......................... 193 St. Lucie Ice CO., wells of........................... ...............'193 St. Marys River.................................................... 92 St. Petersburg, wells of ............................................ 123 Salt marshes ................................................. 99, 231,233 Salt wells at Chester Shoals ......................................... 183 Cocoa................................................ 184 Crystal River ........................................ 123, 124 Frontenac .......................................... 18 Ft. Pierce............................................. 194 Key West ............................................. 123 Oak Hill............................................. 179 Orange 'City ..... ...........................i8o Ormond ............................................ 18 Palm Beach........................................... 122 Perry............................................ 123, 124, 125 Sharpes ............................................... I90 Shilow ............................................... 180 Titusville .............................................'191 Sammis, J. S., well of ............................................ 18 Samples sent to the Survey for examination........................... 13 Sand dunes, relation of the coast ..................................... 91 description of....................................... 9z Sands above the phosphate.......................... 0............. ...24 Sands, residual, origin of.......................................... .24 Sandy hammock lands, description of ................................. 98 occurrence in Middle Florida ................... 220 Sanford, depth to Vicksburg limestone at .............................. 168 wells in vicinity of..............................*.........170-173 Sanford, Samuel, on geology of southern Florida ......... 227, 229, 278, 327, 365 San Mateo, wells at............................................... 165,166 San Pedro Bay .......................................... 2211264,284,364 Sargent, C. S., tree identified by..................................... 322 work done for ...................................... 207 Satsuma, wells at ................................................. 16