64 BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-1907. 
Dickson, Charles W. 
720. Genetic relations of nickel-copper ores, with special reference to the 
deposits at St. Stephen, N. B., and Sohland, Germany.— Canadian Min. Inst., 
Jour., vol. 9, pp. 23G-260, 6 figs., 1906; Canadian Min. Rev., vol. 26, no. 5, pp. 144- 
151, May, 1906. 
Diller, Joseph Silas. 
721. Description of the Redding quadrangle [California]. — U. S. Geol. Sur- 
vey, Geol. Atlas of U. S., folio no. 138, 14 pp., 1 fig., 3 maps, 1 columnar section 
sheet, 1906. 
Describes the physiographic features, the occurrence, character, and relations of Devo- 
nian, Carboniferous, Triassic, Jurassic, Cretaceous, Tertiary, and Quaternary formations, 
and of igneous rocks, the geologic structure and history, and the economic resources, 
chiefly gold, silver, and copper. 
722. Drainage of the Taylorsville region, California, during the auriferous 
gravel period. — Abstract : Science, new ser., vol. 23, p. 814, May 25, 1906. 
723. Age of the pre-volcanic auriferous gravels in California. — Washington 
Acad. ScL, Proc, vol. 8, pp. 405-406, 1907. 
Discusses the age of the auriferous gravels of the Sierra Nevada in California in the 
light of evidence offered by fossil plants and marine shells occurring in Oregon. 
724. The Mesozoic sediments of southwestern Oregon. — Am. Jour. Sci., 4th 
ser., vol. 23, pp. 401-421, 1 fig., June, 1907. 
Describes the occurrence and characters of Jurassic and Cretaceous formations in south- 
western Oregon and discusses their relations. 
The production in the United States in 1906 of asbestos. — See no. 2419. 
Dobbs, AY. Stewart. 
725. [Report on a reconnaissance of] the region south of ('ape Tatnam, 
Hudson Bay. — Canada, Geol. Survey, Summ. Rept. for 1905. pp. 69-73, 1906. 
Gives various data in regard to the character of the region visited and the exposed 
rocks. 
Dodge, Charles Richards. 
726. The volcano of Colima [Mexico].— Sci. Am. Snppl., vol. 56, p. 23092, 
1903. 
Dole, Richard B. 
727. Use of fluorescein in the study of underground waters. — V. S. Geol. 
Survey, W.-S. and Irrig. Paper no. 160, pp. 73-85, 1906. 
D'Ooge, Martin L. 
Israel Cook Russell. — See Bombard and D'Ooge, no. 1611. 
Doolittle, J. E. 
728. Gold dredging in California. — California State Min. Bur., Bull. no. 36, 
pp. 7-108, 70 figs., 3 maps, 1905. 
Douglass, Earl S. 
729. Generic names of Merycoidodonts. — Science, new ser., vol. 24, pp. 565- 
567, November 2, 1906. 
730. Merycochcerus and a new genus of Merycoidodonts, with some notes on 
other Agriochoeridye. — Carnegie Mus., Annals, vol. 4, no. 2, pp. 84-98, 1 pi., July, 
1907. 
Includes also some discussion of the succession and relations of Tertiary beds of the 
West. 
731. Some new Merycoidodonts. — Carnegie Mus., Annals, vol. 4, no. 2, pp. 
99-109, 9 pis., July, 1907. 
732. New Merycoidodonts from the Miocene of Montana. — Am. Mus. Nat. 
Hist., Bull., vol. 23, pp. 809-822, 9 figs., 1907. 
