8o BuivLETiN 7 136 



Amer. Nat., vol. xvi, p. 340, 1882. 

 See Chem. News. 



Sttir, D., Die Lunzer ( Lettenkohlen ) Flora in dem "Older 

 Mesozoic Beds of the Coal Field "of Eastern Virginia." 



Verhandl. d. K — K. Geol. Reichsanstalt, Wein 31, Juli, 

 1888, No. 10, pp. 203-217. 



{Absi.) Amer. Geol., vol. iv, pp. 115-116, 1889. 



Stur, Dr., Triassic Plants of Eastern North America. (Re 

 view of Fontaine's Work. See Original in Verh. G. 

 Reichsanstalt, July 31, 1888). 



{Abst.) Amer. Jour. Sci. , 3d ser., vol. xxxvii, p. 496, 

 If 



Swank, Jas. M., A Bird's Eye-view of the Produdlion and 

 Charadleristics of Iron Ores in the United States, with 

 Statistics of Imports of Foreign Iron Ores in Recent Years. 



Philadelphia, 1885. 31 pp. 



For Virginia, see especially pp. 25-26. 



For further reference, see under Day, D. T. 



Tanner, J. A., Examination for Indium of Smithsonite from 

 Southwestern Virginia and Eastern Tennessee. 

 Chem. News, vol. xxx, pp. 141, 142. 

 Geol. Record, 1874, London, 1875, p. 253. 



Tarr, R. S., Economic Geology of the United States. 



The Macmillan Co., New York, 1895. 



Virginia: Barite, pp. 448-449; Coal, p. 315; Granite, p. 368; Gyp- 

 sxun, p. 405; Iron, pp. 121-122, 139, 142, 144, 145; Iron pyrite, p. 301; 

 Limestone, p. 379; Lithographic stone, p. 442; Manganese, pp. 263, 

 264, 271, 307; Marble, p. 381; Mill stones, p. 428; Mineral paints, 

 p. 450; Mineral waters, p. 420; Slate, p. 376; Tin, p. 275; Zinc, p. 245. 



l^aylor, Jas. "W., Report on the Gold Mines East of the 

 Rocky Mountains. 



Min. Res. U. S., 1867, pp. 323-350. 

 For Virginia, see pp. 338-340. 



Taylor, R. C, Memoir of a Se(5tion Passing through the Bi- 

 tuminous Coal Field near Richmond, in Virginia. 



Trans. Geol. Soc. Pa., vol. i, pt. ii, pp. 275-294, pi. 16, 



1835- 



Fig. I. Anderson's deep shaft, 450 feet, and Cassal shaft, 270 feet. 

 Fig. 2. Willis' shaft, 130 feet; Cronch's engine shaft, 230 feet. 



