BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-190*7 . 17 
Ashworth, James. 
78. Notes on the Crows Nest coal field, British Columbia. -Manchester 
Geol. and Min. Soc, Trans., vol. 29, pt. 3, pp. 78-83, 1905; Can. Min. Rev., vol. 
25, no. 5, pp. 165-167, December, 1905; Eng. and Min. Jour., vol. 81, pp. 711- 
712, April 14, 1906. 
Gives notes upon the character of the coal field and upon the rock slide at Frank, 
Alberta. 
Atkin, Austin J. It. 
79. Some further considerations on the genesis of the gold deposits of 
Barkerville, British Columbia, and vicinity. — Geol. Mag., dec. 5, vol. 3, no. 11, 
pp. 514-516, 1 fig., November, 1906. 
Discusses briefly the character, occurrence, and origin of these deposits. 
Atwood, Wallace W. 
80. Red Mountain, Arizona : a dissected volcanic cone. — Jour. Geology, vol. 
14, no. 2, pp. 138-146, 6 figs., 1906. 
Describes the volcanic material of which the cone consists, the relations of the deposits 
to one another, and the physiographic features and geologic history of the cone. 
81. The glaciation of the Uinta Mountains. — Jour. Geology, vol. 15, no. 8, 
pp. 790-804, 4 figs., 1907. 
Aubury, Lewis E. 
82. Report of the State mineralogist [California]. — California State Min. 
Bur., Rept. of Board of Trustees, pp. 13-17, 1902. 
An administrative report. 
83. Report of the State mineralogist [California]. — California State Min. 
Bur., Rept. of Board of Trustees, pp. 9-14, 1904. 
An administrative report. 
84. Report of the State mineralogist [California]. — California State Min. 
Bur., Rept. of Board of Trustees, pp. 8-19, 1906. 
An administrative report. 
85. The copper resources of California. — California State Min. Bur., Bull. no. 
23, 282 pp., pis., figs., maps, 1902. 
86. The quicksilver resources of California. — California State Min. Bur- 
Bull, no. 27, 273 pp., 50 pis., 94 figs., 8 maps, 1903. 
87. The structural and industrial materials of California.— California State 
Min. Bur., Bull. no. 38, pp. 13-378, 149 figs., 1906. 
Ayres, W. S. 
88. Deutschman's cave, near Banff, British Columbia, Canada. — Am. Inst. 
Min. Eng., Bi-Mo. Bull., no. 13, pp. 93-112, 17 figs., January, 1907. 
Describes the location, the character of the rocks in which it has been cut, the mode 
of its formation, and various features of the cave. 
89. Report on the exploration of Deutschman cave [British Columbia].— 
Canada, Dept. of the Interior, Rept. Surveyor-General for 190(5. pp. 117 L20, 
1907. 
90. Supplementary report on the additional exploration of Deutschman cave 
I British Columbia].— Canada, Dept. of the Interior, Rept. Surveyor-General 
for 1906, pp. 121-126, 1 pi., 1907. 
Babcock, E. J. 
91. The uses and value of North Dakota clays.— North Dakota State Geol. 
Survey, 4th Bienn. Rept.. pp. 101-243. 1 pi., 1906. 
Clay and its properties, with special reference to North Dakota clays.— See 
Clapp and Babcock, no. 471. 
66836— Bull. 372—09 2 
