18. Browne, J. Ross. jNIineral resources. Report of the secretary of the 



Treasury on the mineral resources of the states and territories west 

 of the Rocky Mountains, pp. 590-2, 186S. 



19. Brown, Robert. On the geographical distribution and principal char- 



acteristics of the coal fields of the North Pacific Coast. Trans. 

 Edinburgh Geol. Soc, p. 23, 1868-9. 

 Coos Ba5' coal fields. 



19a. Bradley, C. E. The soils of Oregon. Ore. Agr. Col. Exp. Sta. Bull. 112, 

 Jan., 1912, 48 pp. 



Analyses of soils from various parts of the state. Technical in- 

 vestigations on plant food values, absorption, leaching, drainage, etc. 



20. Calkins, F. C. A contribution to the Petrography of the John Day 



Basin. Univ. of Cal. Publications. Bull. Dept. Geol., Vol. 3, pp. 



109-72, 1902. 



21. Call, R, Ellsworth, and Gilbert, G. K. Quaternary and recent Mollusca 



of the Great Basin, with descriptions of new forms by Call and intro- 

 duced bj^ a sketch on the Quaternary Lakes of the Great Basin by 

 Gilbert. Bull. 11, U. S. G. S., 1884. 



22. Chamberlain and Salisbury. Geology, Vol. 3, 190G, Loess in Oregon, 



p. 414. 



The Triassic on Pacific Slope, pp. 27-8; the Jurassic on Pacific 

 Slope, pp. 61, 67; Correlation of Cretaceous on Pacific Slope, pp. 109, 

 122; Eocene of Oregon, pp. 201, 210; John Day beds in Oregon, p. 247; 

 Oligocene beds in Oregon, p. 248; Miocene beds in Oregon, pp. 268. 

 266, 274. 



23. Chatard, Thomas Marean. Natural soda in Oregon. Bull. 60, U. S. 



G. S., pp. r)3-.5, 1890. 



24. Chittenden, Newton, H. Health and pleasure resorts of the Pacific 



Coast. Oregon, pp. 214-46. 



Describes physical features of Oregon and tells of health springs. 



24a. Clark, D. D. A phenomenal land slide. Pro. Am. Soc. of Civ. Engrs., 

 Trans., Vol. 53, pp. 322-412, 1904. 



Discussion of the land slide at the Portland reservoir. 



25. Clark, Wm. Bullock. The Tejon Strata of Oregon, u! S. G. S. Bull. 83, 



p. 103, 1894. 



Localities of. 



26. Clarke, F. W. Some nickel ores from Oregon. Bull. No. 60, U. S. G. S., 



pp. 21-6, 1890. Am. Jour. Sci., Vol. 35, pp. 483-8, 1888. 



Describes occurrence and composition of nickel silicates from 

 Riddles, Oregon, and compares ores to those of New Caledonia. 



27. Bull. No. 60, U. S. G. S., p. 170, 1890. 



Gives an analysis of coal from Pend d'Oreille, Oregon. 



27a. The Data of Geochemistry. Bull. 330, U. S. G. S., p. 70. Water 



analysis of Powder river, Baker Co., Ore., p. 125. Water analysis of 

 Albert lake. Ore., p. 201. Note on saline marsh near Lake Alvord, 

 Harney Co., Ore., p. 367. Analysis of a rliyolite from Crater lake, 

 Ore., p. 510. Analysis of a glaucophane schist from Bandon, Ore., p. 

 603. Analysis of a nickel silicate from Riddle, Ore. 



28. Clarke, F. W., and Chatard, T. M. Basalt from Mt. Thielson, Analysis 



i>(. Bull. 9, U. S. (i. S., J). 15, 1884. 



