130 FLORIDA GEOLOGICAL SURVEY-TWELFTH ANNUAL REPORT 
Fig. 4. Thickness of formations indicated by wells. Vertical scale, one inch 
equals 400 feet. No. 1. Well of Bonheur Development Company, Wakulla 
County, depth, 2153 feet. No. 2. Well of Palmetto Phosphate Company, 
Tiger Bay, Polk County, depth^ 770 feet. No. 3. Well of Florida East Coast 
Railway, Marathon, Monroe County, depth, 2300 feet. C, Comanchean; E, 
Eocene; O, Oligocene; M, Miocene; P, Pliocene; PI, Pleistocene. 
