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Cinnabar in California, 58. Ciudad Bolivar, Venezuela, 28. Clark's Ditch, Calaveras Co., Cal.,
270.
Classification of gravel deposits, 78. Classification of mines and
mining expenses, 279. Classification of mining operations, 78.
Cleaning up, 247, 248. Clear Creek, Shasta Co., Cal., 46. Clear Lake,
California, 53, 56, 58, 60. Clough's Gully, New South Wales, 34,
67. Clutha River, New Zealand, 36. Coal in California, 58. Coal measures, Auriferous, New South
Wales, 34, 67. Coal tar, coating for pipes, 167, 168. Coast Ranges, California, Belt of, 53-
61. Coating iron pipes, 167, 168. Coefficients of discharge of water
through ditches, 131-134. Coefficients of discharge of water
through
rectangular orifices, 123. Coefficients for roughness, 129. Coloma, El
Dorado Co., Cal., 46. Colombia, United States of, 29. Colorado River,
45. Colorado, State of, 41, 81. Columbia Hill, Nevada Co., Cal., 71,
124, 234, table 1. Concepcion, U. S. of Colombia, 29. Concow reservoir, Butte Co., Cal.,
103. Cook Bros'. Ditch, Calaveras Co., Cal.,
270.
Copiapo, Chili, 26. Copper veins in California, 61. Coquimbo, Chili,
27. Cortez, Conquest of Mexico, 31. Cossack District, Siberia, 21. Cost
of dams, 103, 109, 112.
" ditches, 139-142, 153-156. " electric light, 246. " flumes, 153-156.
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Cost of pipes, 169, 170.
" prospecting work, 88.
" reservoirs, 93.
" sluices, 232-235.
" tunnels, 218, 233, 234.
" undercurrents, 232.
"
working, 275-277, tables xlii.-lii. Cosumnes River, Cal., 77, 238, 270.
Cotta, B. v , cited, 70. Coy Diggings, Victoria, Australia, 32. Coyote
Hill Ditch, Nevada Co., Cal., 47. Coxe, E. B., cited, 119. Cradle—see Rocker. Craig, R. R., on discharge pipes, 49,
50, 180, 181. Crawford, J. J., cited, 124, table 1, Crawford's Claim, El Dorado Co.,
Cal., table 1. Cretaceous strata in California, 54, 58,
59, 64, 66. Creviceing, 248.
Crooked Lake, Nevada Co., Cal., 104. Crosiner, cited, 27. Curves of flumes, 144. Curves of sluices, 218, 227-231.
Dahlonega, Georgia, 39.
Dakota Territory, 41, 146.
Dams, 90-118, 239.
Dams, Wing, 48.
Dana, Jas. D., cited, 45, 80.
D'Arcy, cited, 129.
Dardanelles and Oro Mine, Placer Co.,
Cal., 208, 209, table li. Darfur, Egypt, 17.
Dargo District, Victoria, Australia, 32. Darien, Isthmus of, 29. Davidson County, N. Carolina, 39. Debris—see Tailings. Debris
dams, 112-118, 239, 240. Debris in streams, 238-240. Deep-placer mines,
48, 78, 82. Deep tunnels, First, in California, 51. Deer Creek Tunnel,
Yuba Co., Cal.,
232.
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