weeks] PALEONTOLOGY, PETROLOGY, AND MINERALOGY, 1904. 43 
Dickson (Charles W.). 
1. The ore deposits of Sudbury, Ontario. 
Am. Inst. Mg. Engrs., Trans., vol. 34, pp. 3-67, 26 figs., 1904. 
See no. 297 of the Bibliography for 1903, Bull. IT. S. Geol. Surv., no. 240. 
Diehl (O. C). 
1. Gypsum. 
Mich. Miner, vol 6, no. 6, pp. 21-24, 1904. 
Describes the occurrence of gypsum in Michigan and Utah. 
Diller (J. S.). 
1. Mining and mineral resources in the Redding Quadrangle, Cali- 
fornia, in 1903. 
U. S. Geol. Surv., Bull. no. 225, pp. 169-179, 1904. 
Describes the occurrence and character of deposits of gold, silver, copper, 
chromite, and iron ores. 
2. The composition and structure of the Klamath Mountains. 
Abstract: Science, new ser., vol. 19, p. 794, 1904. 
Dominian (Leon). 
1. Geology of Goldheld, Nevada. 
Ores & Metals, vol. 13, no. 20, p. 25, 1904. 
Describes briefly the geologic structure and history of the region, and discusses 
the genesis of the gold and silver ores. 
2. The Goldheld district, Nevada. 
Eng. & Mg. Jour., vol. 78, pp. 581-582, 1 fig., 1904. 
Discusses the general geology, and the character and occurrence of veins 
containing gold-ore deposits. 
Dominian (Leon), Smith (E. Percy) and. 
1. Notes on a trip to White Oaks, New Mexico. 
See Smith (E. Percy) and Dominian (Leon), 1. 
Douglass (Earl). 
1. The Neocene lake beds of western Montana and descriptions of 
some new vertebrates from the Loup Fork. 
Mont. Univ., Missoula, Mont., 27 pp., 4 pis., 1899. (Published by the Uni- 
versity. ) 
Dowling (D. B.). 
1. Report on geological explorations in Athabaska, Saskatchewan, and 
Keewatin districts, including Moose Lake and the route from 
Cumberland Lake to the Churchill River, and the upper parts 
of Burntwood and Grass rivers. 
Can. Geol. Surv., Ann. Rept., new ser., vol. 13, 44 pp., 2 pis., and map, 1903. 
(Published separately, 1902. ) 
Gives observations upon the occurrence and character of Lauren tian, Huronian, 
Cambro-Silurian, Silurian, and Pleistocene deposits and the economic 
resources, and upon physiographic and geologic features of the region 
examined. 
