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Product of gold—continued;
Idaho, 39.
Japan, 20.
Montana, 40.
New Granada, 30.
New South Wales, 32.
Peru, 27, 28.
Russia, 21,
Savaglikon Mines, Siberia, 23.
Verkneudinsk District, Siberia, 24.
Victoria, Australia, 30.
Prospect drifts, 83, 87, 88.
shafts, 87, 88, 89.
" tunnels, 83. Prospecting, Cost at North Bloomfield,
88.
Puddle, 96, 100. Puddling box, 205. Pumpelly, R., cited, 18, 19, table
lii. Punjab, India, 18. Puno, Department of, Peru, 28. Punta de los
Reyes, Cal., 44. Purus River, Peru, 28. Pyrenees Mountains, 16.
Quaker Hill, Placer Co., Cal., 75,
table li. Quartz veins, Gold, in California, 48,
61, 65. Quebec, Province of, Canada, 37,
table lii. Queen Charlotte Sound, New Zealand,
37-Queensland, Australia, 30, 34. Queenstown, New Zealand, 36. Quicksilver, Amount used in charging
sluices, 244, 266. Quicksilver, Loss of, 244, 266, 267. " ores in California, 58.
" Treatment of, 249.
Railroad Flat, Calaveras Co., Cal., 270. Rainfall, 62, 91, 93, 105, tables v.,vi.,
240. Raleigh, Sir Walter, 29. Randall, P. M., cited, 273.
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Randolph, E., cited, 44.
Rankine, W. J. M., cited, 97, 98,
table xxii. Ras-Elba, Egypt, 16. Rathget, J., on the yield of the gravel
deposits in Calaveras Co., Cal.,
table li. Ratio of evaporation to rainfall, 92. Rawhide hose, 49. Raymond, R. W., cited, 40, 142, tables
xiii., li. Recent alluvial deposits in California,
54-
Records of gold-washing, 15-43.
Red Bluff, Tehama Co., Cal., 53.
Red gravel, 87.
Red Sea, 16.
Reid, cited, 32.
Reid's Creek, Victoria, Australia, 73.
Reservoir.-, go-118.
Retorting amalgam, 249.
Riberao River, Brazil, 25.
Riffles, 224-227, 234, 257, 259, 271,278.
Rifle for discharge pipe, 50, 182.
Rio das Mortes, Brazil, 2;.
Rio Grande, U. S. of America, 40.
River channels, Ancient—see also Pliocene gravels.
River-mining, 48, 51, 79, 80.
Rivets for hydraulic pipe, 162, 169-171.
Riviere du Loup, Canada, table lii.
Rock riffles, 224, 259, 271.
Rocker, 203.
Rose's Bar Tunnel, Timbuctoo, Yuba Co., Cal, 232.
Round Lake Dam and Reservoir, Nevada Co., Cal., 95, 104.
Rowan County, North Carolina, 39.
Rowdy Flat, Victoria, Australia, 73.
Rudyard—see English (dam and reservoir).
Rushworth Mines, Victoria, Australia, 32.
Russia, 15, 20, table lii.
Rust of iron pipes, 167.
Rutherford County, North Carolina, 39.
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