264 
FLORIDA GEOLOGICAL SURVEY—I 5 TH ANNUAL REPORT 
Me 
McLaughlin, W. J., 183-185 
McMillan Brick Co., 150, 156 
M 
Mackler, Dr., 87 
Magnesia, magnesium, 65, 76, 78, 83, 134 
Magnesium carbonate, 64 
Magnetite, 74 
Majolica, 106 
Manatee County, 63, 113, 134, 183-185 
Manganese, 77, 90 
Mann, Albert, quoted on diatoms, 16 
Mansfield, W. C., 3, 25 
Marbles (clay), 106 
Marianna formation, 108, 111, 172 
Marion County, 111, 113, 114, 185-186, 
238 
Marine clays, 68, 70 
Marls, 8, 208, 210 
Matson, G. C., 28, 29, 221, 259 
Materials underlying kaolin-bearing 
formation, 219, 240 
Mellor, J. W., 77 
Memminger, C. G., 259 
Mendenhall, H. D., 63 
Meteyard, Eliza, 138, 242, 259 
Methods of mining kaolin, 233 
Merrill, G. P., 64, 67, 76 
Mica, in clay, 66, 67, 73, 80, 81, 83, 142, 
218, 222, 224, 227, 241 
Mineral City, 17 
Mineral productions of Florida, 14-23 
Mineral waters, output of, 23 
Mineralogy of Florida kaolins, 232 
Minerals in clays, 71 
Mining of kaolin, methods used in, 233- 
234 
Miocene, 35-37, 108-109 
Minton, J. T., 200 
Mirror Lake, kaolin around, 240 
Molding sand, 192 
Morris & Blumer Brick Co., 166-168 
Montmorillonite, 72 
Mooney, Frank, 130 
Murphy, G. H., 202, 212 
Muscovite, 73 
N 
Nashua (marl) formation, 28-35, 115 
Nassau County, (28), 29, 40, 86-189 
National Lead Co., 17 
Nelson, P. A. J., 191 
Newlands, C. O., 35 
Newtonite, 72 
Nuckolls, B. H., 174 
O 
Ocala formation, 107-108, 110, 124, 166, 
185 
Ocklocknee Brick Co., 117, 162, 163, 258 
Okahumpka, kaolin mined near, 217, 
226-237, 239 
Old Brick Yard Landing, 187, 188 
Oligocene, 108, 111, 112 
Orange County, 114, 189-191 
Organic matter in clay, 78, 79, 84 
Origin of kaolin deposits, 221 
Orlando Pottery, 15, 189, 190, 244 
Orthoclase, 83 
Orton, E., 64, 69 
Orton, E., Jr., 69, 84, 85, 94 
Osceola County, 28, 29, 35, 36, 191-192 
P 
Pablo Beach, 17 
Palatlakaha River, kaolin deposits on, 
235, 236 
Paper filler, 71, 106 
Parmelee, C. W., 69, 70, 71, 86 
Pasco County, 192-194, 217, 240 
Paving brick, 105 
Peace Valley Farms Co., 196 
Peat, 8, 17 
Pensacola, 138, 140, 143, 242, 260 
Pensacola Brick Co., 155, 156 
Pholerite, 72 
Phosphate, 18-20, 115 
Phosphatic clay, 194 
Physical properties of kaolin, 229, 230 
Pigments, 71, 106 
Pinellas County, (112), 114, 194 
Pitchers (clay), 106 
Plans of the Survey, 8 
Plasticity of clay, 89-90, 100, 101, 222 
Platt Bros, brick plant, 137, 138 
Pleistocene, 40-42, 109, 110, 116, 117, 
139, 140 
Pliocene, 27, 29, 109, 110, 115 
Polishing brick, 106 
Polk County, 114, 194-197, 240 
Porcelain, 106, 232 
Porosity of clay, 97, 99, 102 
Potash, 65, 78, 83 
Potassium, 76 
Potteries, 15, 121, 138, 243, 245, 258 
Pottery, 106, 138, 145 
Powell, W. B„ 63 
Probable age of kaolin deposits, 224 
Production of brick, statistics of, 254 
Psilomelane, 77 
Publications issued by the Survey, 7 
Pumps, 106 
