wakman.] CEMENT CHILE. 7l 
Cheat River, West Virginia, flow of, measurement of WS 48, 
p 177; WS 65, p 290; WS 75, p LOO 
Chelan, Lake, Washington, forest conditions in basin of PP 6, pp 33-34 
Chemical method of distinguishing pyrite and marcasite and of quantitatively 
determining their relative amounts in mixtures of the 
two Bull 186 
Chemistry; action of ammonium chloride on silicates Bull 207 
composition of glauconite and greenalite Mon xliii, pp 243-247 
on pyrite and marcasite Bull 186 
Chemistry and physics, work in Ann 22, i, pp 133-135; Ann 23, pp 119-121 
Chemung formation, fauna of Bull 210, pp 82-89 
of Pennsylvania, northern Ann 22, nr, pp 608-609 
Chemung group of New York Mon xli, 
p 59; Bull 3, pp 21-22, 29, 30; Bull 41, pp 18, 19, 21, 24, 26, 27 
Chenango River, New York, storage reservoirs on WS 65, p 148 
Cherokee formation of Kansas, flora of Bull 211, pp 108-109 
Cherokee limestones of Missouri and Kansas, analyses of Bull 78, p 125 
Cherokee shales of Kansas, character and fossils of Bull 211, pp 27-29 
of Kansas and Indian Territory Bull 184, p 14 
of Kansas, Missouri, and Iowa Ann 22, in, pp 342, 343, .".44 
of Ozark region Ann 22, n, p 88 
Cherry River, California, flow of, measurement of AVS 6(5, p 148; WS 75, p 213 
Cherry vale shales of Kansas, character and extent of Bull 211, p 37 
Chert, analysis of, from Ozark region Ann 22, n, p 121 
in Oregon, Coos Bay quadrangle GF 73, pi; GF 89, p 2 
Chert, amphibolitic, analyses of, from Minnesota, Mesabi district. .Mon xliii, p 141 
thin section of, from Minnesota, Mesabi district Mon xliii, p 136 
Chert, ferruginous, analysesof, from Minnesota, Mesabi district. .Mon xliii, pp 139-140 
thin section of, from Michigan-Wisconsin, Penokee-Gogebie district. .Mon xliii, 
p 134 
from Minnesota, Mesabi district Mon xliii, pp 132, 1 36 
Chert, ferruginous, amphibolitic, sideritic, and calcareous, from Minnesota, 
Mesabi district Mon xliii, pp 116-143 
Chert concretion, ferruginous, thin section of, from Minnesota, Mesabi district 
Mon xliii, p 128 
Chert granules, ferruginous, thin section of, from Minnesota, Mesabi district, 
Mon xliii, p 130 
Chesapeake Bay, topography of head of Ann 7, pp 551-564 
Chesapeake formation of Maryland Bull 84, p 54 
of Virginia GF 80, p 3 
Chester limestone of Illinois, southern Ann 22, in, p 272 
Chester-St. Louis ammonoids of America Mon xlii, p 14 
Chestochina. (See Chistochina. ) 
Cheyenne River and tributaries, flow of, measurements of WS 49, pp 271-272 
Chicago district, geology of GF 81 
stone industry in Bull 213, pp 357-360 
Chicago Lake, extent, beaches, etc. , < f GF 81, pp 7-11 
Chickachoc chert lentil of Indian Territory GF 73, p 3; GF 79, p 5 
Chickamauga limestone of Georgia GF 78, p 3 
of Tennessee GF 75, pp 2-3 
Chico formation of California Bull 15, p 10; Bull 19, p 24; Bull 33, pp 19-20 
of Oregon, John Day Basin Bull 204, p 17 
Chicopee River and tributaries, Massachusetts, quality of water of.. WS 79, pp 77-85 
Chile, borax production of MR 1901, pp 871, 872 
