INDEX. 
A. Page. 
Acknowledgments to those aiding 52 
Alder Creek, gravels on 4.5-46 
rocks on 44 
Alluvial deposits, character and distribu- 
tion of 31-34, 62, 66, 69 
Amphigenia, occurrence of 22 
Amplexus, occurrence of 21 
Archimedes, occurrence of 23 
Aulacophyllum, occurrence of 21 
B. 
Baker Creek, timber on 15 
tributaries of 82 
Baker Creek group, access to 83 
creeks and benches in 84-93 
description of 82-84,94-95 
gold of 83 
rocks of 83-84 
water of 93-94 
Baker Flats, gold on 65 
location of 12 
Baker Hot Springs, description of 61 
rocks near 27 
vegetation near 15 
Barnard, E. C, work of 9 
Basalt, character and distribution of 28 
Bear Creek, flow of 54 
Beaver Creek, flow of 55 
flow of, utilization of 53 
rocks near 26, 27 
Bed rock, description of 31, 62 
Belle Creek, flow of 55 
Benches, gravels of 68 
location of 68 
See also High bench. 
Big Eldorado Creek, gold on 39-41 
Bison alleni, occurrence of 78 
Boston Creek, flow of 55 
Brooks, A. H., on Fairbanks placers 29-30, 42 
on Rampart region 61 
preface by 7-8 
work of 7-8, 9, 1 1 
Birch Creek schist, character and distribu- 
tion of 16-18 
Brigham Creek, flow of 55 
Bryan Creek, flow of 55 
C. 
Carboniferous rocks, character and distribu- 
tion of 16, 22-23 
Caribou Creek, flow of 55 
Central House, rainfall at 59 
Page. 
Charity Creek, flow of 55 
Chatanika River, flow of 55-58 
flow of, utilization of 53 
rainfall on ;,s .59 
timber on 14 
Chatham Creek, gold on 41, 42 
rocks on 26 
Chena, access to 30 
Chena River, gold on 29 
Chicago Creek, gold of 92 
Chonetes, occurrence of 22 
Circle, rainfall at '. 59 
Circle quadrangle, location of, map showing 10 
map of, publication of 9 
Cladopora, occurrence of 21 
Cleary, rainfall at 58-59 
Cleary Creek, flow of 54 
. gold on 29, 41-42 
rocks near 30 
Climate, character of 13-14,65 
Coal, occurrence of 24 
Collier, A. J., work of 67 
Coral sp., occurrence of 23 
Covert, C. C, on water supply of Fairbanks 
region 51-59 
work of 8, 11, 14, 42 
Cretaceous rocks, character and distribu- 
tion of 16, 23-24 
Cripple Creek, gold on 29,44-46 
Cucullaea, occurrence of 24 
Cytherella, occurrence of 21 
D. 
Delthyris, occurrence of 22 
Devonian rocks, character and distribution 
of 16, 18-22 
Dikes, occurrence of 24, 63 
Discharge measurements, records of 54-59 
Ditches, construction of 48,52 
Diphyphyllum, occurrence of 21 
Dome Creek, gold on 29, 43 
Dome Creek ditch, flow of 54 
Doric Creek, gold on 86,87 
Drifting, methods of 48-50, 66 
E. 
Eagle, rainfall at 59 
Economic geology, account of 29-98 
Eldorado Creek, gold on 42-43 
Electric power, >use of 53 
Elevations, table of 54-59 
Elliot Creek, flow of 54, 56-58 
99 
