XX VI 



GEOLOGY AND MINING INDUSTRY OF LEADVILLE. 



Page. 



PLATE XXI. Micro-sections of audesite. Appendix A 354 



FIGS. 1, 2, and 4. Andesite from Buffalo Peaks. 



3. Zircon crystals in quartz grain of a Lincolu Porphyry. 



PART II. 



XXII. Vein phenomena, showing replacement action 420 



FIG. 1. Evening Star Incline. 



2. Glass-Peudery mine. 



3. Carbonate Incline. 



4. Forsaken Incline. 



XXI II. Circular furnace, smelter A 749 



XXIV. Heverberatory furnace and dust chamber, smelter A 749 



XXV. Flue arrangement, smoker A 749 



XXVI. Rectangular furnace, smelter B 749 



XXVII. Circular furnace, smelter D 7 49 



XXVIII. Bartlett smoke filter McAllister charcoal kiln 749 



XXIX. Rectangular furnace, smelter C 749 



XXX. Dust chamber, smeller C 749 



XXXI. Blast arrangement ami i-li'\ a t inn of works, smelter C 749 



XXXII. Furnace and ilnsl e lumber, smelter D 749 



XXXIII. Furnace aud dust ehambets, smelters F and M 749 



XXXIV. Dust chamber, smelter F 749 



XXXV. Square fnriuiees, smelter G 749 



XXXVI. Zones of temperature K leva t ion of smelter G ~ 749 



XXXVII. Circular furnace, smelter H 74H 



XXXVIII. Dust chamber, smelter H Jolly's spring-balance 749 



XXXIX. Assay furnace, smelter H 749 



XL. Dust chamber, smelter J 749 



XLI. Blake crushers 749 



XLII. Blowers Baker's and Root's 749 



XLI II. Assay implements 749 



XLIV. Smelter's implements 749 



XLV. Alden crasher Furnace and dust chamber, smelter I 749 



FlQ. 1. Sanidine from Nevadite 348 



2. Highland Chief mine 501 



3. Colorado Prince and Miner Boy mines 504 



4. Florence mine, Printer Boy Hill 510 



5. Taylor Hill 511 



6. El Capitau mine 536 



