. Report of the Geological exploration of the fortieth parallel . ad invited much tunnel has since been leased or purchased by the Boston Associationwith the view of driving it on to the Comstock vein. The Chenango Company have a small mill, comprising dressing machineryand Scotch hearths, which have been unemployed most of the time sincetheir completion. In the vicinity of Montezuma, several enterprises of prospective valueare in progress. About 50 or 60 men are employed here in various occupa-tions. A number of lodes are being opened, the most developed of whichis that worke
. Report of the Geological exploration of the fortieth parallel . ad invited much tunnel has since been leased or purchased by the Boston Associationwith the view of driving it on to the Comstock vein. The Chenango Company have a small mill, comprising dressing machineryand Scotch hearths, which have been unemployed most of the time sincetheir completion. In the vicinity of Montezuma, several enterprises of prospective valueare in progress. About 50 or 60 men are employed here in various occupa-tions. A number of lodes are being opened, the most developed of whichis that worked by Judge Lynch, who is also erecting a mill for the treatmentof the ores produced. The general features of the veins are similar to thosealready described. The works in course of construction are designed totreat the ores by dry crushing, for which there are 10 stamps, roasting inreverberatory furnaces, and amalgamating in Vamey pans. A small, experi-mental smelting furnace is also in operation in this neighborhood. The dis-trict is one of growing 79 GENERAL INDEX. Page. Abra 460 Acemularia 415,416 Agitators 229 Agriculture in Colorado 480 Air-blast in mines 131 Air-boxes in Comstock mines 133 AUen, O. D., cited 167,413,420,473 Allen, mining claim on 99 Allen coal mine 468,469 Alpha mine, on Comstock 41,99 Alpha mine, Humboldt County 314 Altitudes of points in the Virginia Eange 16 Altitudes of Carson Plain 16 Washoe Plain 16 points in the Toyabe Eange 347 Alveolites 415 Amalgamation in Washoe 196,197 in barrels 266 works atGeorgetown 609of slimes in 253 of taUings 261,262 American Mining Company, at Aus-tin 375 American Flag lode, Colorado 524 Analysis of andesite 90 iron ore from Marshall mine 483 Kentuck ore, Comstock lode 80 lignite from Marshall mine 483 Analysis of Montezuma ore (Nevada) 299 Page. Analysis of propylite 90 Savage ore 80,274 White Pine ore 420 Anclmra 459,460,461 Andesite 18 of the Virginia Eange 30 its relations to propyli
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