CONTENTS. 
page:. 
Administrative report . 7 
Origin of the' Hard Rock Phosphates of Florida, by E. H. Sellards.. 23 
Eist of Elevations in Florida, by E. H. Sellards .. 81 
Artesian Water Supply of Eastern and Southern Florida, by E. H. 
Sellards and Herman Gunter . 103 
Production of Phosphate in Florida during 1912, by E. H. Sellards... 291 
Statistics on Public Roads in Florida, by E. H. Sellards.'295 
Index . 299 
Plate 
No. 
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2 . 
3. 
4. 
5. 
6 . 
7. 
8 . 
9. 
PLATES. 
Phosphate boulder showing secondary deposition. 
Laminated phosphate boulder. 
Phosphate rock. 
Teeth of mastodon from the phosphate deposits. 
Teeth and foot bone of horse, and teeth of mastodon. 
Sharks’ teeth from the phosphate deposits. 
Sharks’ teeth from the phosphate deposits. 
Phosphate washer and prospect drill. 
Phosphate pit after the removal of the phosphate. 
Palmetto flatwoods, Amelia Island. 
Palmetto flatwoods, Ft. Myers. 
Scrub, east side of Lake Kingsley, Clay County. 
Sandy pineland, DeLeon Springs. 
Open flatwoods, three miles east of DeLeon Springs. 
Everglades west of Ft. Lauderdale. 
Small prairie, four miles west of Sebastian. 
Turnbull Hammock, one mile west of Daytona. 
Sand dune near Mayport. 
Ancient sand dune, two miles west of Daytona. 
Exposure at Saw Pit landing, St. Marys River. 
Exposure of hardpan at Black Bluff on Clark’s Creek eight 
miles from Fernandina. 
Artesian well used for power, Melbourne, in Brevard County. 
10. 
Fig. 
1. 
Fig. 
2. 
11. 
Fig. 
i. 
Fig. 
2. 
Fig. 
3. 
12. 
Fig. 
1. 
Fig. 
2. 
Fig. 
3. 
13. 
Fig. 
1. 
Fig. 
2. 
Fig. 
3. 
14. 
Fig. 
1. 
Fig. 
2. 
FIGURES. 
Fig. 1. Artesian basin. 
Fig. 2. Artesian slope. 
Fig. 3. Artesian water from unconfined horizontal beds. 
Fig. 4. Artesian water from solution passages in limestone. 
Fig. 5. Method of measuring flow of artesian well. 
Fig. 6. Map showing area of artesian flow in Nassau and Duval Counties. 
Fig. 7. Map showing the area of artesian flow in St. Johns County. 
