. 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 GO 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 GO 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 treatmentot the ores produced. The general features of the veins are similar to thosealready described. The works in course of construction arc 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 70 GENERAL INDEX. Page. Abra 400 Aecmularia 415,41G Agitators 229 Agriculture iu Colorado 4S0 Air-blast iu mines 131 Air-boxes iu Coiustock mines 132 Allen, O. D., cited 107,413,420,473 Allen, mining claim ou 99 Allen coal mine 4GS, 4G9 Alpha miue, ou Comstock 41,99 Alpha mine, Humboldt County 314 Altitudes of points in the Virginia Eange 10 Altitudes of Carson Plain 10 Washoe Plain 10 points iu the Toyabe Eange 347 Alveolites 415 Amalgamation iu Washoe 190,197 in barrels 26G works atGeorgetown 009of slimes in 253 of tailings 201,202 American Mining Company, at Aus-tin 375 American Flag lode, Colorado 524 Analysis of andesite 90 irou ore from Marshall miue 4S3 Kentuck ore, Comstock lode SO lignite from Marshall mine 4S3 Analysis of Montezuma ore (Nevada) 299 Page. Analysis of propylito 90 Savage ore 80,274 White Pine ore 420 Anchura 459,400,401 Andesite IS of the Virginia Eange 30 its relations to pro
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