THE NONMETALLIC MINERALS. 401 



A. Ratr.ut. Annales (ies Mines, XI, Pt. I, 1887, p. 147. See also Engineering and 



Mining Journal, XLV, 1888, p. 415. 

 . Verarbeitung des galizischen Erdwachses. 



Berg- und Hiittenmiinniache Zeitung, XLVII, 1888, p. 435. 

 A. l^ivERsiDGE Torbanite.— Cannel Coal or Kerosene Shale. 



Minerals of New South Wales, 1888, p. 145. 

 Max von Isser. Die Bitunienschatze von Seefeld. 



Berg- und Hiittenmiinnisches Jahrbuoh, XXXVI, 1888, Pt. 1, p. 1. 

 L. Babu. Note Sur L'Ozokerite de Boryslaw et les petroles desloboda (Galicie). 



Annales des Mines, XIV, 1888, p. 1()2. See also Transactions of the North 

 of England Institute of Mining and Mechanical Engineers, XXXVIII, 1889, 

 p. 15. 

 Ralph Robinson. Kauri Gum Industry. 



Engineering and Mining Journal, XLVI, 1888, p. 462. 

 R. W. Raymond. Note on a specimen of Gilsonite from Uintah County, Utah. 



Transactions of the American Institute of Mining Engineers, XVII, 1888, p. 113. 

 F. V. Greene. Asphalt and its uses. 



Transactions of the American Institute of Mining Engineers, XVII, 1888, p. 355. 

 William Morrison. Elaterite: A Mineral Tar in Old Red Sandstone, Ross-shire. 



Mineralogical Magazine, VIII, May, 1888, October, 1889, p. 133. 

 Henry Wurtz. The Utah Mineral Waxes. 



Engineering and Mining Journal, XLVIII, July 13, 1889, p. 25. 

 . Uintahite a variety of Graliamite. 



Engineering and Mining Journal, XLVIII, August 10, 1889, p. 114. 

 William P. Blake. Wurtzilite from the Uintah Mountains, Utah. 



Transactions of the American Institute of Mining Engineers, XVIII, 1890, 

 p. 497. 



. Uintaite, Albertite, Grahamite, and Asphaltum described and compared, with 



Observations on Bitumen and its Compounds. 



Transaction of the American Institute of Mining Engineers, XVIII, 1890, 

 p. 563. 

 Henry Wurtz. Wurtzilite, Prof. Blake's New Mineral. 



Engineering and Mining Journal, XLIX, 1890, p. 59. 

 . Bituminous Rock, California. 



Tenth Annual Report of the California State Mineralogist, 1890. 

 E. W. Hilgard. Report on the Asphaltum Mine of the Ventura Asphalt Company. 



Tenth Annual Report of the California State Mineralogist, 1890, p. 763. 

 . 'Asphalt and Petroleum in Mexico. 



Journal of the Society of Chemical Industry, IX, 1890, p. 426. 

 George Valentine. On a Carbonaceous Mineral or Oil Shale from Brazil: Its 

 Formation and Composition. As a Key to the Origin of Petroleum. 



Proceedings of the South Wales Institute of Engineers, XVII, August 8, 1890, 

 p. 20. 

 S. Deutsch. Ozokerite in Galicia. 



Journal of the Iron and Steel Institute, 1891, p. 311. 

 A. N. Searl. Utah Ozokerite. 



Engineering and Mining Journal, LI, 1891, p. 441. 

 Henry Wurtz. A Review of the Chemical Literature of the Mineral Waxes. 



Engineering and Mining Journal, LI, March 28, 1891, p. 326. 

 Clarence Lown; H. Booth. Fossil Resins. 



New York, 1891, pp. 119. 

 Edward Orton. Report on the Occurrence of Petroleum, Natural Gas, and Asphalt 

 Rock in Western Kentucky. 



Geological Survey of Kentucky, J. R. Procter, Director, 1891. 



