IN HEX. 
Page. 
A. 
bbe, Cleveland, jr., acknowledgments to. 15 
dams, F. D., on Treadwell ores 82 
dmiralty Island, coal on 52 
investigations at 16 
minesof, developments and methodsat. 54-57 
rocks on 49-50 
.kun Island, coal on 169 
laska, southeastern, economic develop- 
ments in 47-68 
geology of 48-51, 69-70 
gold production of 48 
* investigations in 15rl6 
location of 47 
mines of 51-68 
silver production of 48 
See also Skagway, Juneau, Sitka, Wran- 
gell, and Ketchikan districts. 
, southwestern , coal of 151-171 
coal of, cost and production of 153, 171 
market for 171 
investigations in 16 
map of 152 
Llaska Central Railway, location of 93 
laska Copper Company, mine of, develop- 
ments of 64 
laska Industrial Company, minesof, char- 
acter of 64 
laska-Juneau mine, developments at 53 
laska Mountains, location and character 
of 28 
laska Packers' Association, coal for 163 
laska Peninsula, coal on „ 151 
geology of 152 
Uaska Steam, Coal, and Petroleum Syndi- 
cate, oil well of, record of 131 
Uaska-Treadwell mine, section of, figure 
showing 74 
Alaska- Washington Gold Mining Company, 
work of 54 
Ubite-diorite, character of 74-77, 87 
dike of, figure showing 80 
occurrence of 70-71 
See also Dioritc 
Aleutian Islands, coal in 151, 169 
lodes in 102 
Alexander Archipelago, coal of, character 
of ,,. 57 
geology of 48-51 
lodes of 49-50 
ores of 50-51 
plaeers of 51 
rocks of 48-49 
structure of 48 
Page. 
Alluvial mining, definition of 32 
See also Mining, placer. 
Amalik Harbor, coal at 161-162 
coal at, analysis of ] 70 
section at 161-162 
Amazon claim, ores of 65 
American Creek, work on 29 
A mil yses of coal. See Coal. 
Aniakchak Bay, coal at 183 
Anikovik River, tin on 120 
Anvil Creek, methods on 21 
Anvil Mountain, hydraulic mining in 40 
Apollo Consolidated Mine, location and 
character of 100-1 01 
Appropriations for Alaska work, specific 
purpose of 13-14 
Arctic Development Company, work of 181 
Arsenopyrite, occurrence of 98 
Atlin district, placers of, character of 35 
B. 
Baker Creek, location and character of. . . 108-109 
Baker Flats, location of 108 
Bancroft, H. H., on Alaska coal 160 
Baralof Harbor, mines at 101 
Baranof Island, rocks on 50 
Bartels Company, tin mines of, develop- 
ments of 124-12. r i 
Basalt, character of 71 , 77 
Bauer mine, character of and developments 
at 58 
Bear Cove, port in 155 
Bear Creek (Skagway district i, work on... 52 
Bear Creek (Turnagain Arm region), loca- 
tion and character of 91-92, 95 
lodes on 98 
placers of 95 
Beaufort, Cape, coal at 175-177, 180 
Beaver Bay, coal at 169 
Becharof Lake, section at 134-135 
Becker, G. F., on albite-diorite 74,84 
on fractures 85 
on gold fields of Alaska 50 
on greenstone 72 
on Shumagin Islands 100-101 
Bering Glacier, gold at 88, 89 
Bering Lake, coal on Ml, 145 
rocks at 129, 130 
Bering River, coal fields of 140-150 
coal fields of, developments of.... 1 15, 149-150 
geology of 140 
location of L40 
maps of 111,112 
sections of , diagrams showing 143 145 
187 
