CONTENTS. 
Page. 
Lime and cement . 40 
Lime . 40 
Natural cement .». 41 
Portland cement . 42 
Sand lime brick . 42 
Concrete building blocks, hollow blocks, and artificial stone. 43 
Minerals new to the State . 44 
Sulphur . 44 
Mineral waters ... 45 
Road-making materials . 46 
Rocks of Florida classified according to origin . 47 
Rocks of Florida classified according to chemical compo¬ 
sition . 47 
Siliceous rocks—flint and chert. 48 
Properties . 48 
Occurrence of flint and chert in Florida. 48 
Origin of flint and chert in the Vicksburg Limestone.. 49 
Calcareous material .i. 50 
Distribution and amount of calcareous rocks . 51 
Argillaceous rocks—Road-making clays . 51 
Bog iron ore . 53 
Phosphate rock . 53 
Geological investigations in Florida previous to the organiza¬ 
tion of the present Geological Survey .... 54 
Papers on geology . 54 
Papers on paleogeography . 68 
Bibliography of Florida Geology . 73 
ILLUSTRATIONS. 
Plate Facing page 
I. Phosphate mining in Florida by floating dredge, Frontispiece 
II. Ocala Limestone—Type exposure, Ocala, Florida. 22 
III. Mining river pebble phosphate in Florida; and Caloosa- 
hatchee beds (Pliocene), Caloosahatchee River. 24 
IV. Land pebble phosphate, showing bedded - phosphate 
deposit; and phosphate washer, Bartow, Florida. 30 
V. Flowing well near Palatka ... 45 
VI. Lake Okeechobee, entrance to three-mile canal; and the 
Everglades, from the south to the north drainage canal 56 
