CONTENTS 
Page 
Tenth Annual Administrative Report 4 
Geology Between the Apalachicola and Ocklocknee Rivers, by E. H. Sellards 
and H. Gunter 9 
The Skull of a Pleistocene Tapir Including Description of a New Species 
and a Note on the Associated Fauna and Flora, by E. H. Sellards 57 
Eleventh Annual Administrative Report 71 
Geology Between the Choctawhatchee and Apalachicola Rivers, by E. H. Sel- 
lards and H. Gunter 77 
Statistics on Mineral Production in Florida during 1917 103 
MoUuscan Fauna from the Calcareous Marls in the Vicinity of DeLand, Vo- 
lusia Co., Florida, by Wendell C. Mansfield hi 
Index 125 
ILLUSTRATIONS. 
Plates 1-2. Skull of Tapir 64 
Plate 3. Palate of Tapir 64 
Plate 4. Part of Lower Jaw and Teeth of Tapir 64 
Fig. 1. Alum Bluff, Apalachicola River .25 
Fig. 2. Geologic Sketch Map 29 
Fig. 3. Contours on the Chattahoochee Formation ' 35 
Fig. 4. Contours on the Alum Bluff Formation 42 
Fig. 5. Exposure of Chattahoochee Limestone - 55 
Fig. 6. Sketch Map of West Florida 56 
Fig. 7. Chipola River 102 
Fig. 8. Sink South of Chipley 102 
Fig. 9. New Pliocene Invertebrates 122 
MAP. 
Map of Area Between Apalachicola and Ocklocknee Rivers, Including Profile_i6 
Map of Area Between Choctawhatchee and Aucilla Rivers 80 
