418 



GENERAL INDEX. 



KaoliDization hypothesis 388 



hypothesis, conclusions regarding the 237 



not prevalent at "Washoe 218,237 



results obtained from esperiraents on 304, 



306, 307, 399 



results of, final expression 307 



thermal effect of 290,397 



Karpathian Mountains, propylitic character of the 13 



Kentvck, analysis of ore from the 153 



King, Clarence, memoir on the Comstocfe Lode 24 



on faulting 156 



on propylite 81 



on quartz -propylite 13 



on the relations of propylite and ande- 



site 24 



on the structure of bonanzas 271 



on the -west -wall of the Comstock 25 



summary of the geology of the Com- 

 stock 25 



Kittler, E., difference of potential of liquids In contact.. 358 



Komiann, TV., analysis by table following page 151 



Lady Bryan, eruptive dioriti? in the 192 



Lamination of country rock 182 



Landslips, theory of 187,380 



Lateral secretion theory 225,385.396 



Lawson's Tunnel (B. 5), quartz -porphyry 1,000 feet south 



of 108,150 



Leucoxene, occurrence of. 215 



LVthology. (Sec Rocks.) 



importance to theory of ore-deposits 32 



of the Washoe District 32 



of "VVashoc. Church on the 28 



summary of 369 



I^de, Comstock. {See Vein.) 

 Lode. {See Comstock Lode.) 



the Comstock, detailed description of 266 



Lode currents, hypothesis underlying experiments on.. . 314 

 opportunitiesforinvestigating at Eureka 324 



Lode electroniotivo force, how i.ieasured 320,327 



Lord, Eliot, history of mining on the Comstock 1 



on the product of the Lode 7 



Machinery, mining, of the Comstock, by "W. R. Eckart. . . 1 



Magnetite, secondary 214 



Mallet, R., theory of terrestrial heat applied to "Washoe. 231 



Matteuci. Ch., on earth currents 352, 360, 367 



McClellan Peak (6 west), basalt near 71 



McKibben Tunnel, assay of granular diorite from 154 



diorite of the 33, 39, 42, 75, 76, 87, 99, 102 



epidotein the 213 



rocks of the 28, 87 



sheeted structure in the 183 



Metamorphic rocks, Whitney on the age of 13 



Metamorphics in the Sierra Nevada 280 



occurrence and age of 190, 380 



Method of least squares, application to temperatures 245 



Jfftrfcan, electrical activity of 317. 322 



tenor of ores of 18 



Mica. {See illustrations.) 



Mica, biaxial 130,131 



formation of chloritei from 211 



Milling 6 



of slimes and tailings 6 



process used 6 



returns guaranteed 6 



Mills, table of snpplies used by the, in 1879 8 



Mine maps 284 



Mines, bullion product of the 10, 11 



development of the, in 1865 14 



extent of the 5 



heat of the 3 



importance of the 1 



length of galleries 5 



system of timbering in the 5 



table of supplies nsed in 1879 8 



the Comstock i 



ventilation of the. Church on 3 



Mineral belts west of the Rocky Mountains 2 



Miners, average weight of 4 



good condition of 4 



hours of labor of 3 



number employed 4 



wages of 4 



work performed by 4 



Mining, commencement of, on the Comstock 2 



difficulties of, on the Comstock 2 



Mister, W. G., analyses by table following page 151, 153 



Moisture in the rocks, electrical effects of 356 



Montezuma Range, propylite from 1 39 



Moore, G. E., analysis by table following page 151 



Mount Abbie (C. 2), later homblendc-andesite of. .70, 133, 205 



Mount Butler (B. 4), lithological character of 15 



Mount Davidson (C. 3), age of 89 



diorites of 33, 35, 42, 88. 193 



influence on the Lode 156 



King on 2£ 



probably an uplift 185 



propylite from 143 



sheeted structure of 182 



slope of 377 



von Richthofen on 13, 14, IS 



Mount Dutton, "Utah, propylite from 143 



Mount Emma {G. 4), younger hornblende-andesite of. . . 69 

 and Mount Rose, divide between, later 



homWende-andesite from 134 



Mount Kate (F. 5), augite-andesite from 127 



Mount Rose (F. 5), analysis of later hornblende-andesite 



from table following page 151 



later hornblende-andesite of 69,153,204 



Munroc, Gate of, Utah, propylite from 144 



Occidental grade, augite-andesite of the 34 



Lode, occurrence of 202 



Openings, lenticular, infrequency of, on the Comstock . . . 395 



Ophir, analysis of ore from the 153 



analysis of water from the 152 



assay of porphyritic diorite from the l.'J4 



electrical activity in the 317, 322 



tenor of ore of the 18 



Ophir grade, augite-andesite of 128,407 



Ophir Hill (B. 3), earlier hornblende-andesite near IIU 



Ophir Ravine (C. 2), assay of porphyritic diorite from. .. 154 



diabase of 51 



diorite of 33, 36. 83, 98, 102, 103, 152, 405 



epidote in 213 



propylite of 82,83,86,138 



Orange Mountain, N. J., diabase of 53 



Ore. (See Bonanzas.) 



Ore and quartz, origin of 221 



bodies, cause of electrical activity of, on the Com- 

 stock 323 



electrical activity of 309, 400 



