44 Bulletin 7 100 



in Maryland and Virginia. 



Amer. Geol., vol. x, pp. 362-368, 1892. 



Geology of the Catocflin Belt. 



14th Ann'l Rep't U. S. Geol. Surv., pt. ii, pp. 285-295, 

 pis. 19-39, 44 fi&s-, maps, 1892-93. 



For further reference, see under Geiger, H. R. 



Kemp, J. F., The Ore Deposits of the United States. 

 New York, 1893, ^vi & 302 pp., 67 illustrations. 

 For Virginia, see pp. 77, 82, 94, 125, 131, 172, 263, 2S1. 



Kent, Wm., (See under Day, D. T. ). 



Kerr, W. C, Report on the Cotton Producftion of the State 

 of Virginia. 



loth Census U. S., vol. vi, pp. 617-647, 1884. 



Work of the Appalachian Division of the United States 



Geological Survey in 1882. 



The Virginias, vol. iv, pp. 23-24, 1883. 



Killebrew, J. B., The Western Iron Belt of Tennessee. 

 Eng. and Min. Jour., vol. xlv, p. 18, map, 1888. 



Note on the Coal Field of Southwest Virginia. 



Eng. and Min. Jour., vol. xlvii, pp. 64-65, 134, i 



Kimball, Jas. P., The Green way Iron Ore Belt of the James 

 River, Virginia. 



The Virginias, vol. ii, pp. 2-5, sedlions, 1881. 

 Extradls from a report of a reconnaissance of the Estate of the 

 Central Virginia Mining Company. 



The Iron Ore Range of the Santiago Districft of Cuba. 



Trans. Amer. Inst. Min. Engrs. , vol. xiii, pp. 613-634, 

 1884-85. 



For Virginia, see p. 620. 



Genesis of Iron Ores by Isomorphous and Pseudomor- 



phous Replacement of Eimestone, etc. 

 Amer. Geol., vol. viii, p. 352-376, 1891. 

 Amer. Jour. Sci., 3d ser., vol. xlii, pp, 231-241, figure, 

 1891. 



King, Clarence, i^mmons, S. F., & Becker, G. F., Sta- 

 tistics and Technology of the Precious Metals, 

 loth Census U. S., vol. xiii, xiv & 541 pp- 1880. 

 For Virginia: Amalgomating mills, see p. 527; diredlory of deep 



