6 ILLUSTRATIONS. 
Page. 
Plate XXIV. A, Bed-rock sluice, Klondike benches; B, Blocks of frozen 
gravel in hydraulic pit, Klondike 136 
XXV. A, Sluice below elevator, Ophir Creek; B, Retaining dams, 
Bonanza Creek, Klondike 148 
XXVI. A, Hydraulic elevator in pit, Glacier Creek; B, Gravel in pit, 
Glacier Creek 152 
XXVII. A, Hydraulic elevator; B, Open cut worked by tramming to 
bed-rock sluices 154 
XXVIII. A, Single-lift dredge, 40-foot ground at Atlin, coarse gold; B, 
Buckets, Atlin dredge 160 
XXIX. A, Trommel and gold-saving tables, New Zealand type, 
Bonanza Creek, Klondike; B, New Zealand dredge, Bonanza 
Creek, Klondike 162 
XXX. A, Dredge of New Zealand type at Oroville, Cal., Leggett No. 3; 
B, Buckets, dredge at Council 168«| 
XXXI. A, Digging on spud; B, Stacker, New Zealand type of dredge 
California No. 1 176 | 
XXXII. Buckets: A, California No. 3; B, El Oro; C, Indiana No. 2; D, 
Lava BedsNo. 2. 17m 
XXXIII. A, Lower tumbler, California No. 3; B, Digging ladder at low 
angle, Oroville, Cal 18( 
XXXIV. A, Uncompleted belt stacker, Oroville, Cal.; B, Troughed belt 
stacker, Oroville, Cal 18' J 
XXXV. A, Oroville, Cal., practice in pond dredging; B, Pilot house, 
upper deck, starboard side 18' ] 
XXXVI. A., Winter dumps, showing previously erected sluice boxes, 
Klondike; B, Mud box, used in string of boxes 19! J 
XXXVII. A, Mud box on Gold Run, Klondike; B, Oroville riffles used 
at Atlin, British Columbia 
XXXVIII. A, Road in Fairbanks district; B, Road in Atlin district, British 
Columbia 22 
XXXIX. A, Ogilvie Bridge, Klondike River; B, Six-mule team drawing 
8,000 pounds, Klondike 22 
XL. A, Six-horse team drawing 3,300 pounds, Cleary Creek, Fair- 
banks; B, Creek topography, Fairbanks district 22 
XLI. A, Pack train, Birch Creek district; B, Trestled flume in Eagle 
district 22. 
XLII. Topography, Seward Peninsula province 24 
Fig. 1. Map showing American Creek drainage, Eagle district A- 
2. Map of part of Birch Creek district 
3. Map of part of Fairbanks district 
4. Map of part of Seward Peninsula 
5. Klondike rocker 
6. Small steam scraper, Klondike 
7. Set-up of scraper, Klondike 
8. Bottomless steam scraper 
9. Plan of track-and-incline system 
10. Plan of steam-shovel operations, Anvil Creek 
11. Plan of steam-shovel operations, Galesburg, 111 
12. Pulling-up device for steam shovel 
13. Rig for small drifting operation 
14. System of opening drift mine 
15. Hidden Treasure system of timbering drift mine 
'" 
