•& 
76 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, [bull. 1 
Lakes (Arthur). 
1. Gypsum deposits in Colorado. 
U. S. Geol. Surv., Bull. no. 223, pp. 86-88, 2 figs., 1904. 
Describes character, occurrence, and economic development of the gypsm ( 
. deposits of Colorado. 
2. The coal fields of Colorado. 
Colo. Sch. Mines, Bull., vol. 2, no. 2, pp. 11-28, 2 figs., 1904. 
Describes the formation of the coal, the location, character, and geologic agel 
the coal fields and the character and occurrence of the coals. 
3. Field notes concerning ore shoots and the influence of downhi 
pressure on the outcrop of veins. 
Mines & Minerals, vol. 25, pp. 92-93, 6 figs., 1904. 
4:. Grand Encampment copper district of Wyoming. Some notes 
the geology, and a description of some of the developmer 
work. 
Mines & Minerals, vol. 25, pp. 200-201, 2 figs., 1904. 
5. The Yampa coal fields. A description of the anthracite, bitum 
nous and lignite field traversed by the Moffatt Road in Rob 
County, Colorado. 
Mines ct Minerals, vol. 24, pp. 249-251, 4 figs., 1904. 
Describes the occurrence, character, and geologic relations of the coal beds. 
6. The Book Cliff coal mines. Coal seams near Grand Junction, Cold 
rado, which exhibit interesting peculiarities in their locaticl 
and formations. 
Mines A: Minerals, vol. 24. pp. 289-291, 4 figs., 1904. 
Describes the occurrence, character, geologic relations, ami economic develo 
ment of these coal beds. 
7. A trip through Arizona. Interesting desert scenery and tin 4 rel: 
tion it hears to the geology and mining interests of the regioi 
Mines cv Minerals, vol. 24, pp. 356-358, 4 figs., 1904. 
(Jives observations on the physiography and geology of parts of Arizona. 
8. Tonopah mining camp. Some notes on its location, the geologic 
formations of the region, and the mines in operation. 
Mines and Minerals, vol. 24, pp. 479-481, 1904. 
9. Mines and scenery. A typical Nevada mining region situated 
the bottom of an ancient dried up lake bed. 
Mines A: Minerals, vol. 24, pp. 552-553, .'! figs., 1904. 
Gives observations upon the physiography and geology of a part of weste 
Nevada. 
10. Schists and slates as ore carriers. 
Mg. &Sci. Press, vol. 88, pp. 161-162, 1904. 
Discusses the occurrence of ore deposits. 
11. Ore in anticlinals, as at Bendigo, Australia, and Tombstone. Ai 
zona. 
Mg. & Sci. Press, vol. 88, p. L93, 1904. 
L 
I 
