133 Geological Bibliography of Virginia 77 



Geol. Record, 1880-84 incl., London, 1889, vol. ii, p. 244. 

 For further reference, see under Lewis, H. C, and Mallett, J. W. 



Smith, Margaret V., Geographic Division and Description 

 of Virginia, with the Natural Resources of Each. Re- 

 print, Comr. Agrl., pp. 413-440. 



The Governors of Virginia. Washington, 1893. xxi & 451 pp. 



Smith, Wm. A., (See under Rothwell, R. P.). 



Smock, Jno. C, Ores, Minerals, and Mineral Substances of 

 Industrial Importance, Which Are at Present Mined. 

 Min. Res. U. S., 1883. 

 JFor Virginia, see pp. 738-743. 



Geologico- Geographical Distribution of the Iron Ores of 



the Eastern United States. 



Trans. Amer. Inst. Min. Engrs. , vol. xii, pp. 130-144, 



1883-84. 



For Virginia, see pp. 135, 138, 140, 141. 



Spencer, A. C, A Preliminary Note on the Geology of Mas- 

 sanutten Mountain in Virginia. 



J. H. Univ. Cir., vol. xv, pp. 13-14, 1895. 



Spencer, J. W., Post- Pleistocene Subsidence versus Glacial 

 Dams. 



Bull. Geol. Soc. Amer. , vol. ii, pp. 465-476, pi. 19, 1891. 

 Geol. Mag., 3d decade, vol. viii, pp. 262-272, 1891. 

 {Abst.) Amer. Geol., vol. vii, p. 141, 1891. 

 " Ibid., vol. viii, p. 186, 1891. 

 " Amer. Nat., vol. xxv, p. 653, 1891. 



Review of "The Lafayette Formation" by W J McGee, 



Jour. Geol., vol. ii, pp. 435-439, 1894. 



Sproull, H. S., (See under Day, D. T.). 



"Star," Washington, D. C. The Natural Bridge of Virginia. 

 The Virginias, vol. vi, p. 159, 1885. 



Stegleman, C. M., The Paper on the Copper and Other Re- 

 sources of the Floyd-Carroll-Grayson Plateau. (A Re- 

 print of a Paper by R. O. Currey, Entitled, "A Geologi- 

 cal Visit to the Virginia Copper Region.") 

 The Virginias, vol. i, p. 60, 1880. 



Stevens, John G., Iron Making in James River Valley, 

 Virginia. 



