CONTENTS, 
Page 
Administrative Report- 5 
Statistics on Mineral Industries of Florida, by E. H. Sellards-- 13 
The Pebble Phosphates of Florida, by E. H. Sellards---- 25 
The Natural resources of an area in Central Florida, including a part 
of Marion, Levy, Citrus and Sumter counties, by E. H. Sellards, 
Roland M. Harper, Charles N. Mooney, W. J. Latimer, Herman Gun¬ 
ter and Emil Gunter-—_— ----— 117 
Soil Survey of Bradford County, by W- C. Byers, Arthur E. Taylor, J. B. 
R. Dickey and N. M. Kirk-- 253 
Soil Survey of Pinellas County, by Grove B. Jones and T. M. Morrison— 293 
ILLUSTRATIONS. 
Fig. 1. Map to show the location of phosphate deposits in Florida_ 30 
Fig. 2. View to show overburden of the land pebble phosphate- 42 
Fig. 3. Mining River pebble phosphate- 44 
Fig. 4. Diagrammatic sketch to show the structure of Florida- 53 
Fig. 5. Diagrammatic sketch to show conditions under which the land 
pebble phosphates were accumulated_ 59 
Fig. 6. Unconformity in the phosphate bed- 62 
Fig. 7. Top view of land tortoise--- 70 
Fig. 8. Part of lower jaw of a gavial_ 74 
Fig. 9. Side view of land tortoise_____•- 75 
Fig. 10. Jaw and teeth of Chlamytherium- 80 
Fig. 11. Ostrea from the Bone Valley formation_ 83 
Fig. 12. Tooth of the elephant-- 85 
Fig. 13. Alum. Bluff on the Apalachicola River___ 87 
Fig. 14. View in Pit of Pembroke mine_ 89 
Fig. 15. Mining Phosphate Rock by Hydraulic Method_ 89 
Fig. 16. Phosphate Washer _ 89 
Fig. 17. Pit of Palmetto Phosphate Company- 91 
Fig. 18. Pit of the Pierce Phosphate Company_ 91 
Fig. 19. Plant of the Pierce Phosphate Company_ 91 
Fig. 20. Sample of Phosphatic Marl from Black Creek_ 93 
Fig. 21. Sample from Phosphate Bed- 93 
Fig. 22. Phosphate Pebbles washed from the bed rock-__ 95 
Fig. 23. Phosphate Pebbles from the phosphate bed- 95 
Fig. 24. Phosphate pebbles from the Bed Rock_ 97 
Fig. 25. Phosphate pebbles from the Phosphate Bed__1_ 97 
Fig. 26. Shark’s teeth _ 99 
Fig. 27. Phosphate Pebble - 99 
Fig. 28. Shark’s Teeth__ 99 
Fig. 29. Skull of Gavial, top side_:__ 101 
Fig. 30. Skull of Gavial, lower side_ j._ 101 
Fig. 31. Snout of the Cetacean_ 103 
Fig. 32. Part of the skull of a Cetacean_ 103 
Rig- 33- Vertebrae of a Cetacean _ 105 
Fig. 34. 'Tooth of a Mastodon_ 105 
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