SILVER AND GOLD. 215 



2.09.24. The resources of the remaining counties of Colorado 

 are chiefly in coal. 



very' Jf. E., Vol. I., p. 16. S. F. Emmons, Tenth Census, Vol. XIII., p. 64. 

 J. B. Farish, "Interesting Veins Phenomena in Boulder County, Colo- 

 rado," If. E., September, 1890. F. A. Genth, "On Tellurides," Amer. 

 Jour. Sci., ii., XLV, p. 305, and other papers in the same journal. C. S. 

 Palmer, "Eruptive Rocks of Boulder and Adjoining Counties," Proc. Colo. 

 Sci. Soc., Vol. III., p. 230. P. H. Van Diest, "The Mineral Resources of 

 Boulder County," Ann. Rep. Colo. State School of Mines, 1886, p. 25. 



