(52 Bulletin 7 118 



Pollard, Thomas, A Handbook of Virginia. 

 Richmond, 1879. 



(The Gold Belt of Virginia). In "Gold, its Occurrence 



and Extradlion." 



A. G. lyocke, 1882, p. 182. (Not seen). 



Porcher, Sam'l, On an Interesting Specimen of Native Gold 

 from Montgomery County, Virginia. 

 The Virginias, vol. iii, p. 3, 1882. 



Preston, R. B., (See under Day, D. T.). 



Prime, jr., Frederick, On the Occurrence of the Brown 

 Hematite Deposits of the Great Valley ( of the Appalach- 

 ians). 



Trans. Amer. Inst. Min. Engrs., vol. iii, pp. 410-422, 



'874-75- 



The Magnetic Iron Ores of Page Valley. 



The Virginias, vol. i, p. 38, 1880. 



Compilecl by Jed. Hotchkiss from a report by F. Prime, jr. 



The Mineral Resources of the Page Valley. 



The Virginias, vol. i, pp. 34-36, 1880. 

 For further reference, see under Pumpelly, R. 



Proctor, Jno. R., The Mineral Resources of Tennessee. 



Engr. and Min. Jour., vol. xlv, pp. 21-22, map, 1888. 

 Virginia referred to. 



Big Stone Gap, Virginia. 



Bull. U. S. Geol. Surv., No. in, p. 95, 1893. 



Prolix, Peregrine, Letters Descriptive of the Virginia Springs. 

 Philadelphia, H. S. Tanner, 1837. 



Prosser, C. S., The Geological Position of the Catskill Group. 

 Amer. Geol., vol. vii, pp. 351-366, 1891. 



Pumpelly, Raphael, loth Census U. S., vol. xv, 1880. 

 The Coals of the United States, pp. 603-796, maps. 

 The Coals of the United States, by Frederick Prime, jr. , 



pp. 605-617. 



Coal fields of West Virginia and Virginia, p. 6iof. 

 Statistics of the Produdlion of Anthracite Coal in the 



Census Year, pp. 623-639. 

 Virginia, see pp. 625-630. 

 Statistics of the Produ(5lion of Bituminous Coal Lignites 

 in the Census Year, pp. 641-687. 



