LNDEX. 



641 



Page. 



Pans, McCone's 219, 224 



Varney's 218, 222 



Wbeeler's 218, 219 



Wheeler aiul Raudall's 223 



shoes and dies in 220 



comparative advantages of 



large and small 224 



use of steam in 198 



experiments in working 278 



Paragenesis of materials iu Corn- 

 stock 91 



Park Basin in Toyabe Eange 321 



Parlce's mill for working slimes . . 254, 255 

 imin'ovement in pan rims. .. 25G 



Paxton, J. A. «& Co 382 



Peavine district, Nevada 296 



Percentage of value obtained in mill- 

 ing at Washoe 205, 24G 



Percentage of value obtained in mill- 

 ing — comparative statement of, as 



shown by twenty-one mills 248 



Petalumamill , 210,232 



Philadelphia district, geology of . . . 393 



mines of 396 



Piute, mine on Comstock lode 99 



Plater, J. O., cited 97, 430 



Plato, mining claim on Comstock 



lode 99 



Pleurotomaria 416^ 417 



Plunger pumps of Comstock mines . 125 



Pohlers, A 98 



Point of Eocks, Toyabe Eange . 338, 470 



altitude of 347 



Pogonip Flat, White Pine 412, 428 



Mountain, altitude of 410 



Pope, Mr., cited 464 



Poston, Mount 346, 348 



Potosi lode. Snake Eiver, Colorado. 624 

 Prima lode, Snake Eiver, Colorado. 624 

 81 



Pago, 



Productus 410 



Products of leading mines on Com- 

 stock lode 187, 191 



Propylite, occurrence of, in Virginia 



Eange 17 



Propylite in the Comstock lode 39 



composition of 25, 26 



occurrence of, as inclosing 

 rocks of silver-bearing 



veins 20 



analysis of 89, 90 



horses of, in Comstock.. 68 

 of the Toyabe Eange . 325, 338 



Pumping works on Comstock lode. 133 

 machinery in Comstock 



mines 124 



lifting pump 124 



force pump 125 



Pump rods 127 



Pumps, length of stroke 129 



capacity of 130 



Pumping in Gregory Consolidated 



mine 512 



Pumping in Black Hawk mine 515 



Pyromorxjhite, occurrence of in Com- 

 stock 83 



Quartz of the Comstock lode 72, 79 



east and west bodies in Com- 

 stock 49 



Quartz-propylite 28 



Quartzites of the Toyabe Eange . . . 324 



Quartz Hill, Colorado 523 



claim on Burroughs lode. . . 532 

 Quicksilver, geological occurrence 



of 5 



Quicksilver, action of, upon ore. 275, 277 

 loss of, in Washoe pro- 

 cess , 292 



