69 Geological Bibliography of Virginia 13 



Paleozoic Overlaps in Montgomery and Pulaski Counties, 



Virginia. Map. 



Bull. Geol. Soc. Amer., vol. v, pp. 1 71-190, figure, 1894. 

 {Abst.) Amer. Geol., vol. xiii, pp. 147-148, 1894. 



The Origin of Some Mountain Scarps. 



Geol. Soc. Wash., April 22, 1896. 

 (Adst) Amer. Geol., vol. xvii, p. 408, 1896. 

 Scarp at Roanoke, Virginia. 



New River uplift prevented Atlantic streams from capturing its 

 headwaters. 



Drainage Modifications and their Interpretation. Parf 



II. — Criteria for Determining Stream Modifications. 

 Jour. Geol., vol. iv, pp. 657-678, 1896. 

 For Virginia, see especially pp. 674-678. 



Case, Wm. H., The Bertha Zinc Mines at Bertha, Virginia. 

 Trans. Amer. Inst. Min. Engrs. , vol. xxii, pp. 511-536, 

 maps and sedlions, 1893. 



Ibid. p. 696-698. Discussion. 



Catlett, C, & Howard, B. I/., Analysis of Coal, Iron and 

 Monganese Ores from Virginia. 



Bull. U. S. Geol. Surv., No. 64, pp. 51-54, 1890. 



Catlett, C, & Whitfield, J. S., Analysis of Iron and Man- 

 ganese Ores from Virginia. 



Bull. U. S. Geol. Surv., No. 60, pp. 165-166, 1890. 



Chatard, Thos. M., Salt- Making Processes in the United 

 States. 



7th Ann'l Rep't U. S. Geol. Surv., pp. 491-535, illus- 

 trated, 1885-86. 



For Virginia, see tables on Coal, pp. 530-535. 



Chauvenet, W. M., Iron Mines, (Ores) of Virginia, 

 loth Census U. S., 1886. 



Chester, F. D., Delaware, Eastern Shore of Maryland and 

 Virginia. 



McFarlane's Geol. Ry. Guide, 2d ed., pp. 329-331, 1890. 



Chickering, jr., Jno. W., The Newly -Discovered Cave in 

 Luray, Page County, Virginia. 



Proc. Amer. Assoc. Adv. Sci., vol. xxviii, p. 487, 1879. 

 (Read, not published). 



