INDEX 



259 



Oakland Valley, brickyards, 212'5-13'; 



clay deposits, 212^-13'-. 

 Ochre, 1232 _ 



Ogden brick co., 2115-121. 

 Ogdensburg, clay deposits, 103^ 196- ; 



brickyards, 196^. 

 Oldfield bros., brick yard, 179^. 

 Oneida county brick manufacturers, 



248'-49. 

 Oneonta, brick yai'ds, 212- . 

 Onondaga county, brick manufac- 

 turers, 2483-49. 

 Onondaga vitrified pressed brick co., 



2005-19, 2215. 

 Ontario county, brick manufacturers, 



2503-51 . 

 Open yards, 1611-628. 

 Orange county, brick manufacturers, 



244-1-45 . 

 Oswego county, brick manufacturers, 



2508-51. 

 Oswego Falls, brick yards, 2025. 

 Oswego valley, clay deposits, 10£8. 

 Otis (feGorsline, sewer pipe works, 225^. 

 Otsego county, brick manufacturers, 



250'-51. 

 Ouimet, J., brick yard, 194^ 

 Overbaugh, D. C, brick yard, 1871 

 Overlying material, table, 240-41. 

 Owasco, brick yards, 202^, 223*; drain 



tile works, 223*. 

 Ownership of brick yards and clay 



banks, 174»-752. 

 Oyster Bay, clay deposits, 122=, 2W- 



15-; brick yards, 214'J-15'. 



Paige bros. , brick yard, 196'^ 

 Paint, 2132. 

 Palaeozoic fossils, 113^. 

 "Pale" brick, lee*. 

 Pallet driers, 163'^-64i. 

 Pallet squarer, 1639-641. 

 Pan crushers, 161 '^-68". 

 Parker, M., brick yard, 204=. 

 Parry, W. W. , brick yard, 154«, 1989-99'. 

 Paving brick, manufacture, 151^-52'', 

 23^9; qualities of clay required, 

 1519-52'i; use of, ISl-^; 



testing, 152^-541; table, 2109-11''. 

 Pebbles, lOO', 105% lir, 118% 122', 1908, 



205% 206', 230% 



Peck, B. F., drain tile works, 2229-23% 



Peconic Bay, clay deposits, 129% 



Peekskill, clay deposits, 112*; delta 

 deposits, 114% brick yards, 179^. 



Pegmatite, 1109. 



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



Perkins & Pit, stove linings, manu- 

 facture, 230% 



Permeability of brick, 151'. 



Phosphates, effect on clay, 139^. 



Piffard, depth of clay, 101% 



Pipe tile, 222'. 



Plasticity, 138*. 



Plates, fossils, 124-27. 



Platting, 164% 



Plattsburg, clay deposits, 1209; brick 

 yards, 194^. 



Plows, use of, 1459-46% 



Plunger machine, 1689. 



Pocantico river, delta df posits, 114'. 



Port Ewen, stratification, 104% clay 

 deposits, 106% 1849-85% terrace, 116*; 

 brick yards, 1849-85". 



Port Kent, terraces, 120'. 



Port Washington, hills at, 133«. 



Porter, I. K., brick yard, 1899-90% 



Porter, J., brickyard, 1869-87^. 



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



Potash, effect on clay, 139''. 



Potsdam, brick yards, 195'; clay de- 

 posits, 1955. 



Preglacial origin of Long Island 

 Sound, 133% 



Preparation, of clay, machines used, 

 155% methods, 156''-595; 

 of fire clays, 22-l'^-25*; of stoneware 

 clays, 232^-33*. 



Pressed brick, strength, 211''. 



Preston bros., brick yard, 199^. 



Production of brick, cost, 174*-75% 

 value in 1S93, 98". 



Prospecting for clay, 143'-455. 



Pug mill, 1589-595. 



Pyrites, 1299, ijjqs. 



Pyrometers, Ml*. 



auartz, 10:% 122', 190% 230«. Seealso 



Silica. 

 Quartzite, Hi% 



Quassaic creek, delta, 108^, 11 48. 

 Quaternary clay deposits, 100'*. 



