INDEX 



Acid-proof brick, 17. 



Adirondack Pyrite Co., 52. 



Adirondacks, feldspar, 27 ; garnet, 8, 

 28; granites, 61; graphite, 8-9, 29- 

 31; magnetite, 2>^; marble, 6y ) 

 pyrite, 50; trap, 71. 



Akron Gypsum Co., 33. 



Albany, building sand, 56; slip clay, 



25- 



Albany county, bluestone, 71 ; build- 

 ing brick, 19, 21, 22; clays, 18; 

 drain tile and sewer pipe, 23 ; fire 

 brick and stove lining, 23 ; lime- 

 stone, 64, 65, 66, 6y; molding sand, 

 57; potteries, 25; slip clay, 24; 

 terra cotta, fireproofing and build- 

 ing tile, 23. 



Albion, sandstone, 71. 



Alden, natural gas, 45. 



Alden-Batavia Natural Gas Co., 47. 



Algonquin Red Slate Co., 41. 



Allegany, petroleum, 48. 



Allegany county, clays, 18; natural 

 gas, 44, 45, 46; petroleum, 48, 50; 

 terra cotta, fireproofing and build- 

 ing tile, 23. 



Allegany Pipe Line Co., 49. 



Alma, petroleum, 48. 



American Glue Co., 28. 



American Gypsum Co., 2,?,- 



American Pyrites Co., 50, 52. 



Amherst, natural gas, 45. 



Analyses, arsenical ore, 13 ; gypsum, 

 34; magnetite, 38; pyrite, 51. 



Andover, petroleum, 48. 



Anorthosite, 61, 62. 



Antwerp, iron ores, 2)^. 



Arlington, manufacture of clay ma- 

 terials, 24. 



Arnold Mining Co., ^6. 



Arsenical ore, 12-13 ; analysis, 13. 



Arscnopyrite, 13. 



Ausablc Forks, granite, 62. 



Avon, natural gas, 45. 



Ballston Springs, 41. 



Barton, H. H. & Sons Co., 28. 



Barton hill group, 27- 



Batchellerville, feldspar, 27. 



Bedford, feldspar, 27. 



Benson mines, 6, 37-38. 



Benson Mines Co., 36. 



Biotite, 30, 51, 56. 



Bishop, I. P., cited, 45, 



Blue Corundum Mining Co., 26. 



Bluestone, 59, 60, 69 ; value of pro- 

 duction, 70. 



Bolivar, petroleum, 48. 



Borst, C. A., 2,^, 40. 



Bradford, Pa., petroleum, 49. 



Brick, 9-12, 15, 16-17, 19-20; num- 

 ber made, 7; value of output, 7, 

 9-12, 16-17, 19-20; prices, 19, 22. 

 See also Sand-lime brick. 



Bridgeport Wood Finishing Co., 27. 



Brocton, natural gas, 45, 



Brooklyn, sand-lime brick,' 58. 



Broome county, bluestone, 71 ; build- 

 ing brick, 19 ; clays, 18. 



Brush mountain stone, 39. 



Buffalo, natural gas, 45, 



Buffalo Sandstone Brick Co., 58. 



Bugby, J. H., 26. 



Building brick, see Brick. 



Building marble, 68. 



Building materials, 7, 15. 



Building sand, 56. 



Building stone, 59-71 ; value of out- 

 put, 7, 59-71 ; from granite, 62 ; 

 from limestone, 62, 64, 65, 66, 67; 

 from sandstone, 69, 70; from blue- 

 stone, 71. 



Building tile, 15, 17, 23. 



Burdick, O. M., 47. 



Burcsch, Otto, 27. 



Byron, mineral springs, 42. 



Calcined plasters, 32. 

 CalcdiMiia, natural g;is, 45. 



