8i Geological Bibliography of Virginia 25 



Stone, by Wm. C. Day, pp. 542-602. 



Virginia: Granite, p. 547; Marble, p. 549; Sandstone, p. 553: Lnne- 

 stone, 555; Slate, 557, 573- 

 Gypsum, pp. 713-716. 



Virginia, see pp. 714-715. 

 Iron Ores, by Jno. Birkinbine, pp. 23-49. 



Virginia, see pp. 26, 27, 28, 32-33, 38, 39. 

 Manganese, by J. D. Weeks, pp. ii9'i55- 



Virginia, see pp. 120, 121, 135-136. 

 Mineral Waters, by A. C. Peale, pp. 772-794- 



Virginia, see pp. 774, 782, 783. 

 Soapstone, pp. 624-626. 



Virginia, see p. 625. 

 Tin, pp. 178-183. 



Virginia, see pp. 180-182. 



Day, W. C, Stone. 



i6th iVnn'l Rep't U. S. Geol. Surv., pt. iv, pp. 436-510- 



4 plates, 1894-95. 



For Virginia, see pp. 462, 481, 492, 510. 

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



Diss DeBarr, J. H., The West Virginia Handbook and Im- 

 migrant's Guide. A Sketch of the State of West Vir- 

 ginia. Geographical Position, Historical Outline, State 

 Constitution, Surface and Soil, Agriculture, Stock-farming, 

 Wool Growing, Fruit and Wine Growing, Timber, Coal, 

 Iron, Petroleum, Salt and Other Minerals, Education, Re- 

 ligious Worship, Lands and Farms, Titles and Prices, 

 with a Brief Notice of Each County, and an Official 

 State Dire(ftory and Map. 



Parkersburg, 1870, 12 mo., 193 pp. and Map. 



Del Rio, A., Report on Rappahannock Gold Mine, Virginia. 



Virginia, 1834. (Not seen). 

 Supplement to Reports by A. Del Rio and Jno. Milling- 

 ton, Aug. 4, 1834, pp. 147-156; and Report by Jno. Mil- 

 lington, Aug. 5, 1834, pp. i57-i59- 



Trans. Geol. Soc. Pa., 1834, pp. 159-166, 4 figures. 



The following is the explanation of the figures:— 



Fig. I (p. 163). Map or ground plan of an Estate called "Rap- 

 pahannock or Smith's Gold Mine" in Stafford County, Virginia. 



Fig. II (p. 164). Transverse seAion of the vein or load when 

 looking towards the north-east in the shafts Nos. 3 and 4. 



Fig. Ill (p. 165). Longitudinal seAion of the country in the di- 

 rection of the central vein, taken by eye estimation without instru- 

 ments. 



