BIBLIOGRAPHY OF NORTH AMERICAN GEOLOGY, 1906-190*7. 55 
Crane, W. R. — Continued. 
593. Lend and zinc mining in the Quapaw district, Oklahoma. -Mines and 
Minerals, vol. 27, no. 9, pp. 445-446, 1 fig., May. 1907. 
Describes the character and occurrence of the ores. 
Crespi, It. A. 
594. Geology and development of Aguacate mines. Costa Rica. — Min. World, 
vol. 27, pp. 847-848, November 9. 1907. 
Crider, A. F. 
595. Geology and mineral resources of Mississippi. — 1". S. Geol. Survey, 
Bull. no. 283, 9!) pp., 4 pis.. 5 figs., L906. 
Describes the occurrence, character, and relations of Devonian. Mississippian, Cre- 
taceous. Tertiary, and Quaternary formations, and the mineral resources, mainly clays 
and cement materials. 
596. Clays of western Kentucky and Tennessee. — TI. S. Geol. Survey, Bull, 
no. 285, pp. 417-127, 1 pi.. 1906. 
Describes the general geology ami the distribution and character of the Cretaceous and 
Tertiary clays. 
597. Drainage of wet lands in Arkansas by wells. — U. S. Geol. Survey, 
W.-S. and Irrig. Paper no 160, pp. 54-58, 1 fig., 1906. 
598. Cement and Portland cemenl materials of Mississippi. — Mississippi 
State Geol. Survey, Bull. no. 1, 73 pp., 6 pis., 1907. 
Crider, A. F., and Johnson, L. C. 
599. Summary of the underground-water resources of Mississippi. — U. S. 
Geol. Survey, W.-S. and Irrig. Paper no. 159, 86 pp., 6 pis., 11 tigs., 1906. 
Describes the topography, the general geology, the character ami distribution of 
Devonian, Carboniferous, Cretaceous. Tertiary, and Quaternary formations, and the 
underground-water resources. 
Crook, Alja Robinson. 
600. The making of the Grand Canyon of the Colorado.— Pop. Sci. Monthly, 
vol. 69, pp. 417-424, 7 figs., November, 1906. 
Crosby, William O. 
The limestone-granite contact deposits of Washington Camp, Arizona.— Am. 
Inst. Min. Eng., Trans., vol. 36, pp. (.26-646, 1906 (Bi-Mo. Bull. no. 6, pp. 1217- 
1238, 1905).— See Crosby, 16, page 78 of Bulletin no. 301, IT. S. Geol. Survey .- 
601. Ore deposits of the eastern gold belt of North Carolina. — Tech. Quart., 
vol. 20, no. :;, pit. 2X0-286, September, 1907. 
Describes the general geology, the genetic and structural relations of the gold-bearing 
formations, and mining developments. 
602. Volcanic action in Alaska. — Science, new ser., vol. 26, p. 7s. July 19, 
1907. 
Cross, Whitman. 
603. Prowersose (syenitic lamprophyre) from Two I'.nttes, Colorado. — .lour. 
Geology, vol. 14, no. 3, pp. 165-172, 1906. 
Describes the occurrence, the macroscopic and microscopic characters, ami the chem- 
ical composition, and compares it with similar rocks. 
604. Stratigraphic results of a reconnaissance in western Colorado and 
eastern Utah.— Jour. Geology, vol. L5, no. 7. pp. 634 679, 11 figs., L907. 
Discusses the correlation of Cretaceous, Jurassic, Triassic, ami Carboniferous 
mat ions. 
