84 INDEX TO PUBLICATIONS OF U. S. GEOL. SURVEY. Ibull.215. 
Copper in California, Redding region Bull 213, pp 123-132 
in Colorado, Pearl Bull 213, pp 163-169 
Silverton quadrangle Bull 182, pp 78, 80, 86 
in Idaho, Nez Perce region WS 54, pp 127-129 
in Tennessee, Cranberry quadrangle GF 90, p 8 
in AVyorning, Encampment region Bull 213, pp 160-162 
ores of .ME 1901, p 969 
in Wyoming, platinum in Bull 213, pp 94-97 
publications on Bull 213, p 186 
statistics of MR 1900, pp 141-190; MR 1901, pp 157-198 
Copper Basin, Alaska, terraces in Copper, pp 80-81 
timber in Copper, p 92 
topography of Copper, pp 27, 29-30 
Copper Center, Alaska, trail from Tonsina River to Copper, p 21 
Copper River district, Alaska, geography of Copper, pp 25-31 
geologic history of, outline of Copper, p 32 
geology and mineral resources of portion of Copper 
glaciation in Copper, pp 76-82 
gold in Copper pp 90-91 
mineral resources of Copper, pp 82-92 
placer gold mining in Bull 213, p 48 
railroad construction in, practicability of Copper, p 92 
trails in Copper, pp 1 7-25 
Coral reefs of Hawaiian Islands, Molokai WS 77, pp 15-16 
Corals of Buda limestone Bull 205, pp 37-40 
Cordierite-biotite-microperthite-hornfels, analysis of, from Vermont, Ascutney 
Mountain Bull 209, p 118 
Cordierite-corundum-pleonaste-hornfels, analysis of, from Vermont, Ascutney 
Mountain Bull 209, p 118 
Cordierite-hornfels, analysis of, from Minnesota, Mesabi district Mon xliii, p 172 
analysis of, from South Carinthia Bull 209, p 29 
from Vermont, Mount Ascutney Bull 209, p 29 
of Minnesota, Mesabi district Mon xliii, pp 171-172 
thin section of, from Minnesota, Mesabi district, showing alteration from 
slate Mon xliii, p 174, 
Cornell University, experiments at, in stream measurement WS 64, pp 54-95 
hydraulic laboratory at, description of AVS 64, pp 59-60 
Corniferous escarpment, New York, description of Mon xli, p 73 
Corniferous limestone of Erie and Ohio basins Mon xli, pp 56-57 
of New York Bull 3, pp 8, 9 
of Ohio, oil and gas in Ann 8, u, pp 498-499 
(See, also, Onondaga.) 
Correlation of Alaskan formations, provisional Copper, p 33 
of Carboniferous formations and faunas of the world Mon xlii, pp 17-18 
of geological faunas Bull 210 
of rocks in Alaska, southeastern PP 1, pp 27-29 
in Minnesota, Mesabi district Mon xliii, pp 200-205 
principles of Bull 210, pp 10-32 
Corsicana, Texas, oil and gas field, description and record of Bull 184, pp 54-55 
Corundum in other countries Bull 180, pp 88-93 
in United States, occurrence and distribution of Bull 180 
methods of mining and cleaning Bull 180, pp 72-75 
occurrence of, modes of Bull 180, 
pp 11-37; MR 1900, p 756; MR 1901, pp 737-738 
"ses of , ._ Bull 180, pp 75-79 j 
