INDEX. 
A. Page. 
Abrasive materials, publications concern- 
ing 439-440 
Adams, G. I., paper by 187-196 
work done by 26; 30 
Afterthoiight district, California, fea- 
tures of . --.- 126 
Alabama, coal fields in, area of 258 
production of 258 
Alden, W. C, paper by 357-360 
Alaska, coal deposits in 276-283 
copper deposits in 141-148 
geologic work in 22 
gold deposits of.. — 71-75 
gold mining in 41-48 
tin deposits in 92-93 
Allegheny Valley, Pennsylvania, coal 
beds of 272-274 
Allen, E. T., chemical determinations 
by 114,115 
Almy, T. J., cited.... 39 
Alum, manufacture of, from iron slag. . . 229 
American Creek, Alaska, gold mining on . 48 
Amsterdam oil pool, Ohio, developments 
of 342-344 
Anglesite, deposits of, Kansas 200 
deposits of, Missouri 200 
Utah.. 114 
Anvik River, Alaska, coal bed on 282 
Anvil Creek, Alaska, gold deposits in 45 
Appalachian region, copper deposits in. 181-185 
geologic work in 23 
Arizona, cement materials in 372-380 
coal beds in 379 
copper deposits in 133-140, 149-157 
gold deposits in 140 
work in 23-24 
Arkansas, asphalt deposits of 353-355 
coal fields in, area and production of. 258 
lead and zinc field of, development of. 188 
geology of 189-192 
history of 187-188 
ore deposits of.. 192-196 
position of 187 
production of 188 
work in 26,30 
Ashley, G.H., work done by 30 
Ashley, G. H., and Fuller, M. L., paper 
by 284-293 
Asphalt, analyses of.. 354 
deposits of, Arkansas 353-355 
Indiana 333 
origin and distribution of 296-305 
investigations of 30 
publications concerning, list of 356 
Page. 
Asphaltene, characters of 299-300 
Attapulgus, Ga., fuller's earth beds at. _. 392- 
393,394 
B. 
Bain, H. F., cited 196 
work done by 30 
Bain, H. F., and Van Hise, C. R., paper 
by, title and notice of 20 
Baker Flats, Alaska, gold prospects on. . . 55 
Balaklala mine, California, ore bodies of. 132 
Bancroft, H.H., cited... 107 
Barite, deposits of, Kentucky. 212 
Barrell, Joseph, and Weed, W. H., paper 
by, title and notice of 21 
Bauxite, investigations of 29 
Bayley, W. S., work done by 30 
Bear Mountain, California, limestone 
beds near 365 
Beaumont clays, Texas, character of 346 
Beaver Valley, Pennsylvania, coal beds 
of. 275 
Becker, G. F., cited 57,60 
Beech River, Tennessee, phosphate de- 
posits on 425 
Berea grit, structure of 339-340 
Big Creek shaft, Pearl, Colo., copper 
oresat 164-165 
Big Horn shaft, Pearl, Colo., copper de- 
posits at 168 
Bingham, Utah, ore deposits at 105-122 
Bingham Canyon mining district, Utah, 
geography of 106-107 
geology of 109-122 
history of 107-109 
ores of 113-118 
placer deposits of 119-120 
production of 109 
Birch Creek region, Alaska, mining in. . . 47 
Bisbee, Ariz., copper deposits at, investi- 
gations of 24,149-157 
Bisbee beds of Arizona, features of 150-151 
Bitterroot Range, geology of 66-70 
work in 26 
Bitterroot Range and Clearwater Moun- 
tains, Montana, mineral depos- 
its of 66-70 
Bituminous rock deposits, origin and dis- 
tribution of. 296-305 
Black Diamond district, California, fea- 
tures of 130-131 
Black Hills, work in 27-28 
Blake, W. P., cited 296 
Blatchford coal mine, Yukon River, 
Alaska, conditions at 281 
441 
