147 Geological Bibliography of Virginia 91 



i\DDENDA. 



Adams, W. H., The Pyrites Deposits of Louisa County, Vir- 

 ginia. 



The Virginias, vol. v, pp. 74, 80-81, 1884. 



Read at Cincinnati meeting of Amer. Inst. Min. Engrs. 



For further reference, see under Rothwell, R. P. 



Ashburner, Chas. A., The Natural Bridge of Virginia. 

 Sci., vol. V, pp. 13-14. 1885. 

 Read before the Amer. Phil. Soc, October 17, 1884. 

 The Virginias, vol. vi, pp. 23-24, 1885. 

 See Proc. Phil. Soc. Phila., No. 116. 



The Coal Trade and Miners' Wages in the United States 



for the Year 1888. 



Trans. Amer. Inst. Min. Engrs., vol. xviii, pp. 122-139, 

 1890. 



Virginia referred to. 



Atkinson, W. G., The Catawba, Botetourt County, Virginia, 

 Coals. 



The Virginias, vol. iv, pp. 160-161, 1883. 



Bailey, J. W., A Sketch of the Infusoria, of the Family Ba- 

 cillaria, with Some Account of the most Interesting Spe- 

 cies Which Have Been Found in a Recent or Fossil State 

 in the United States. 



Trans. Assoc. Amer. Geol. and Nat., 1840-42, pp. 112- 

 164. 



Fossil Infusoria of Virginia and Maryland, 



The Virginias, vol. ii, pp. 56-57, 1881. 



Baker, A. I/., (See under Students of the University of Vir- 

 ginia). 



Baltimore Sun. Dora Anthracite Coal: Two Opinions about 

 It. 



The Virginias, vol. iv, p. 150, 1883. 



Baskerville, C, (See under Mitchell, R. H.). 



