938 



NEW YOEK STATE MUSEUM 



Northport bay, stoneware clay, 602- ; 



illus. facing p. 819-20. 

 Northport clay and fire sand co., 820*- 



22"; illus. facing p. 820. 

 Northrup, E. B., clay pit, 724=. 

 Northrup, J. I., on rhizomorphs, 593^ 



Oakland valley, brick yards, 732'; 



clay deposits, 732*. 

 Ocher, 598*, 848^ 

 Ogden brick co., 731°. 

 Ogdensbnrg, clay deposits, 575°, 71P- 



12*; brick yards, 71P-12*. 

 Ohio, clay deposits, 624^-25*; fire clay, 



dSG'^-ST'; fiint clays, 781' ; glass-pot 



clays, 787^ 

 Oldfield Bros., brick yard, 693^ 

 Olschewsky, W., on plasticity, 540'- 



4P; on per cent of water in clays, 



543'. 

 Oneida county, brick yards, 713^ 714*- 



15=; shale, 826^ 

 Oneonta, brick yards, 731'. 

 Onondaga county, brick yards, 715"- 



18^ 

 Onondaga pottery co., 823'; illus. fac- 

 ing p. 792, 795-97, 802, 804-7. 

 Onondaga vitrified pressed brick co., 



715^-17% 830- ; illus. facing p. 663, 



671, 678, 715, 744, 773, 830. 

 Ontario county, brick yards, 719^-20^; 



drain tile works, 771*; shale, 829=. 

 Open yards, 669'. 

 Orange county, brick yards, 696^, 698', 



731^-32^ 732"-33=. 

 Ore-balls, 782\ 

 Organic matter in clay, 509^ 511^, 527"- 



28*, 860^ See also Analyses. 

 Orleans county, brick yards, 722*. 

 Ornamental brick, 646"; value of out- 

 put, 493', 494=; manufacturers, 913'- 



25*. 

 Orton, Edward, jr, cones for sale by, 



554"; rattling tests on paving brick, 



75P. 

 Oswego Falls, brick yard, 718'; clay 



deposits, 718'. 

 Oswego valley, clay deposits, 575*. 

 Otis & Gorsline, sewer pipe works, 



769». 

 Otsego county, brick yards, 731'. 

 Ouimet, J., brick yard, 709°; illus. fac- 

 ing p. 661, 674. 

 Overbaugh, D. .C, brick yard, 701=. 

 Owasco, brick yard, 718°; drain tile 



works, 772=. 

 Ownership, of brick . yards, 685°; of 



clay banks, 685''-86='. 

 Oyster bay, clay deposits, 597=, 734'; 



brick yard, 734*. . . 



Paige Bros., brick yard, 711'-12*. 

 Paint, 848\ 



Painting, see Decoration. 



Pale bricks, 676", 677^ 



Paleozoic fossils, see Fossils. 



Pallet driers, 670'; illus. facing p. 669. 



Pallet-squarer, 670'. 



Pallet yards, 669'; illus. facing p. 670. 



Pan crushers, 656*; illus. facing p. 653, 

 656, 759, 765. 



Paper clay, 852^. 



Parian ware, 798'. 



Parker M.. brick yard, 722'. 



Parry, W. W., brick yard, 647', 715\ 



Pass & Seymour, pottery works, 824^; 

 illus. facing p. 791, 809, 814-15, 817. 



Paving brick, 673", 743=-77=; cities us- 

 ing, 743"; end-cut, 664=; total num- 

 ber produced in 1897, 743=; re- 

 pressed, 668*; tests, 729*-30°, 745'-50', 

 854'; value of output, 493', 494* ;. 

 wearing power, 750°-55'; 



manufacture: 745"; illus. facing p. 

 744-45; shales used, 502=; auger ma- 

 chine used, 664'; continuous kilns 

 used, 679*; 



in Arkansas, 612'; Colorado, 613*; 

 Kansas, 617'; Louisiana, 619*; Mary- 

 land, 619*; Michigan, 620'; Missouri, 

 622*; New York industry, 755*-57', 

 913'-25*. 



Paving brick clay, fluxes in, 512'; 

 composition, 743'-45^ ; analysis, 

 900=-3°. 



Pebbles, 573", 578S 582', 585', 587", 592', 

 596', 705', 722", 723', 728"; separa- 

 tion from clay, 634=. 



Peck, B. F., drain tile and brick manu- 

 facture, 771''-72*. 



Peconic bay, clay deposits, 603'. 



Peekskill (stream), delta deposits, 

 588'; illus. facing p. 588. 



Peekskill (town), terrace, 585''-86^, 

 590"; brick yard, 693'. 



Pegmatite, 584'. 



Penfield, M.A., fullers' earth mine, 850'. 



Penn Yan, Cashaqua shale, 834'. 



Pennock, J. D., experiments on refrac- 

 tory brick, 785*-86*. 



Pennsylvania clays, 625=; titanium in, 

 526°; fiint clays, 781'; glass-pot 

 clays, 787*. 



Pepper, J. H., brick yard, 709'. 



Permeability of clay wares, 854*-55*. 



Phosphoric acid, 511', 860*. See also 

 Analyses. 



Physical properties of clay, 510', 538'- 

 61'. 



PiflFard, depth of clay, 574'. 



Pipe clay, in New Jersey, 623*; analy- 

 sis, 904*-7'. 



Pipe tile, 770°. 



Plant impressions, illus. facing p. 611. 



