INDEX 



259 



Oakland Valley, brick yards, 212*-13 2 ; 



clay deposits, 212 6 -13». 

 Ochre, 123 2 . 



Ogden brick co., 211M2 1 . 



Ogdensburg, clay deposits, 103 1 , 19G 2 ; 

 i. rick yards, 196 2 . 



OldQekl bros., brick yard, 179 7 . 



Oneida county brick manufacturers, 

 248M9. 



Oneonta, brick yards, 212 s . 



Onondaga county, brick manufac- 

 turers, 24S 3 -49. 



Onondaga vitrified pressed brick co., 

 £00 5 -l 9 , 229 6 . 



Ontario county, brick manufacturers, 

 250 3 -51. 



Open yards, 161MJ2 8 . 



Orange county, brick manufacturers, 

 244 4 -45. 



Oswego county, brick manufacturers, 

 250 8 -51. 



Oswego Falls, brick yards, 202 5 . 

 Oswego valley, clay deposits, 102 8 . 

 Otis&Gorsline, sewer pipe works, 22S 5 . 

 Otsego county, brick manufacturers, 



250 7 -51. 

 Ouimet, J., brick yard. 194 6 . 

 Overbaugh, D. C, brick yard, 187». 

 Overlying material, table, 240-41. 

 Owasco, brick yards, 202 8 , 223 4 ; drain 



tile works, 223 4 . 

 Ownership of brick yards and clay 



banks, 174 9 -75 2 . 

 Oyster Bay, clay deposits, 122 s , 21 1 9 - 



15 2 ; brick yards, 214 9 -15 3 . 



Paige bros., brick yard, ICG 2 . 

 Paint, 213*. 

 Paloeozoic fossils, 113 s . 

 " Pale " brick, 16G 4 . 

 Pallet driers, 168*-84>. 

 Pallet squarer, 163 9 -G4 1 . 

 Pan crushers, 167°-GS 6 . 

 Parker, M. , brick yard, 204 s . 

 Parry, W. W. , brick yard, 154°, 198 9 -99 1 . 

 Paving brick, manufacture, 151 5 -52 c , 

 23& 9 ; qualities of clay required, 

 151 9 -52«; use of, 151 6 ; 



testing, 152 7 -54 1 ; table, 210 9 -11 7 . 

 P.bbles, 100', 105 2 , 111?, 118 s , 122 1 , 190 8 , 



205 s , 206 1 , 230«. 



Peck, B. F., drain tile 'worts, 222«-23 4 . 



Peconic Bay, clay deposits, 129 6 . 



Peekskill, clay deposits, 112 4 ; delta 

 deposits, 114 7 ; brick yards, 179 6 . 



Pegmatite, 11 9 . 



Pepper, J. H., brick yard, 194 4 . 



Perkins & Pit, stove linings, manu- 

 facture, 230 8 . 



Permeability of brick, 151 1 . 



Phosphates, effect on clay, 139 s . 



Pi Hard, depth of clay, 101 6 . 



Pipe tiie, 222 1 . 



Plasticity, 138 4 . 



Plates, dossils, 124-27. 



Platting, 164 6 . 



Plattsburg, clay deposits, 120 9 ; brick 



yards, 194 6 . 

 Plows, use. of, 145 9 -46 6 . 

 Plunger machine, 168 9 . 

 Pocantico river, delta deposits, 114*. 

 Port Ewen, stratification, 104 5 ; clay 



deposits, 106 s , 184 9 -85 6 ; terrace, 116 4 ; 



brick yards, 184 9 -85 6 . 

 Port Kent, terraces, 120 5 . 

 Port Washington, hills at, 133«. 

 Porter, I. K., brick yard, 18; 9 -90». 

 Porter, J., brickyard, 18G 9 -S7 2 . 

 Post, W. & J., brick yards, 214*. 

 Potash, effect on clay, 139 3 . 

 Potsdam, brick yards, 195 5 ; clay de- 

 posits, 195 5 . 

 Preglacial origin of Long Island 



Sound, 133 2 . 

 Preparation, of clay, machines used, 

 155 8 ; methods, 15G G -59 5 ; 



of fire clays, 224 6 -25 4 ; of stoneware 

 clays, 232 7 -33 4 . 

 Pressed brick, strength, 211 1 . 

 Preston bros., brick yard, 199 5 . 

 Production of brick, cost, 174 4 -75'; 



value in 1892, 9g c . 

 Prospecting for clay, 143 7 -4o\ 

 Pug mill, 158 9 -59 5 . 

 Pyrites, 129 9 , 130 6 . 

 Pyrometers, 141 5 . 



Quartz, 103 2 , 122 1 , 190 8 , 230«. Seecdso 



Silica. 

 Quartzite, 111*. 



Quassaic creek, delta, 108 3 , 114 8 . 

 Quaternary clay deposits, 100 s . 



