PETROLEUM possibilities OE elorida 
133 
Ocklocknee River, exposures on and 
mention of, 61, 63, 64, 69, 75, 77, 103, 
104, 110, 111, 112, 125 
Ohio, oil-producing formations of, 57 
Ohio Well Drilling Co. (see also E. A. 
Durst), 91 
Oil, composition of, 42-43 
geologic distribution of, 56 
showings of reported in wells drilled 
in Florida, 79 
specific-gravity of, 43-44 
surface indications of, 57-58 
theory of origin of, 44-45 ' 
Oil seepage, hydrostatic pressure cause 
of, 48 
Oil (and gas) wells, tests drilled in 
Florida, 39-40 
depth of, 53-54 
method of drilling, 54-55 
Oolitic limestones, 101, 114 
Okaloosa County, 73, 103, 115 
Okeechobee, depth to and thickness of 
Miocene at, 86 
log of well at, 86-87, 116 
Okeechobee County, 86, 115-116 
Okefinokee Swamp, 96 
Oklahoma, oil-producing formations of, 
57 
Oldsmar, well being drilled near, 118 
Oligocene formations, absence of in the 
Ocala Area, 80 
general references to the, 61, 65, 70, 72, 
74, 75, 77, 80, 84, 87, 104, 107, 108, 
111, 112, 125 
references to the of West Florida, 67, 
69, 70, 72, 74, 75, 77 
Operculina, 60 
Orbitoides, 89 
Orange County, 85, 116 
Orange Mills, depth- to the Eocene at, 
103, 120 
Organic theory of origin of oil, 44-45 
Origin of petroleum, theory of, 44-45 
Orlando, depth to the Eocene at, 116 
Orthophragmina, 60 
Osceola County, 86, 116 
P 
Pack, R. W., 48 
Palatka, depth to the Eocene at, 120 
Palm Beach, record of well at, 92-94 
depth to the Eocene at, 94, 118 
Palm Beach County, 118 
Palmetto Phosphate Co., log of well of, 
87-90 . 
Panama City, record of well at, 97 
Paraffin base oils, 43, 44 
Pasco County, 84, 118 
Peace River, 87 
Pearson Oil Co.,.wells drilled by, 123 
Peat, 28 
Pennsylvania, oil-producing formations 
of, 56, 57 
Pennsylvanian formation, 56, 57 
Pensacola, 74, 103 
Pensacola Area, 73, 74, 103 
Peppard, G. P., 91 
Perry, log of well at, 124 
Petroleum, 39, 42, 44, 128 
Phosphate, phosphatic materials, produc¬ 
tion, etc., 20, 22, 26, 28, 62, 63, 100, 
106, 111, 113, 115, 119 
Pinellas County, 40, 70, 87, 118 
Pleistocene, development and distribution 
of, 64-66, 75, 86, 87, 91, 95, 97, 98, 
100, 101, 103, 105, 107, 110, 112, 114- 
116, 118-120, 122, 124, 125 
Pliocene formations, references to, 64-66, 
87, 91, 95, 97, 100, 102, 103, 105, 107, 
110-113, 116, 118-120, 122, 125 
Plunging anticline, 50 
Polk County, 64, 87, 119 
Probabilities of petroleum production, 
128 
Publications of the Survey, 6-19 
Putnam County, 26, 85, 103, 120 
Q 
Quincy, 76, 104 
Quincy Area, 75-76, 103 
Eocene determined from wells of, 76, 
77 
R 
Rare earths or metals, 20, 27 
Rat Head, log of well near, 126 
Recommendations, 14 
Red Bay, exposures near, 65, 125 
Redwood, Boverton, on petroleum, 44 
Ripley Formations, 73 
Road material, marls used for, 125 
Rock Bluff, exposures at, 112 
Rock Springs (Orange County), 116 
Rotary method of drilling, 54, 55 
Roumania, salt domes of, 52 
S 
St. Augustine, depth to the Eocene at, 120 
St. Johns County, 85, 120 
St. Johns River, exposures on, 64, 109- 
110, 120, 122, 125 
St. Lucie County, 120-121 
St. Lucie Drainage Canal, marls exposed 
by, 118 
