32 ECONOMIC GEOLOGY. 



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Several veins of galena afford valuable percentages of silver. The 

 only one that has been milled is from Madison. According to Prof. 

 Seely's assay, this contains 94 ounces, 1 1 pennyweights, and 5 grains 

 of silver to the ton of lead. This is the old Eaton mine described by 

 Jackson. I understand, from the late H. J. Banks, the manager of the 

 mine, that during his administration $55 per ton was obtained by actual 

 sale for the silver contained in the ore. The mine itself will be de- 

 scribed under lead. 



Near the summit of the road over Gardner's mountain, in the south- 

 west corner of Lyman, are veins of argentiferous galena, owned by J. H. 

 Paddock, of St. Johnsbury, Vt., which have been exploited slightly, and 

 are worthy of further attention. I examined them first in 1869. The 

 earth and a little rock were removed, exposing a vein of clear pyrites 

 and galena over four inches thick. This was traced for five or six rods, 

 cutting the strata at an angle of 70°, the dip of the strata being 62"^ east- 

 erly, and the vein 50° S. 20° E. In 1875 I found that additional excava- 

 tion had uncovered the vein down to 16 inches in width, the principal 

 portion being galena. Returns from the assay office show from $15 to 

 1^36 of silver to the ton. 



One of the first mines opened in Lyman showed both silver and gold 

 in the galena. It is not worked for either of these metals at present. 

 The property is a part of the Paddock company, and had originally the 

 name of the New Hampshire Silver Lead Company, with a nominal cap- 

 ital of $500,000. From Prof. Wurtz's reports upon this property, made 

 in 1864, I have condensed the following statements: 



There are two groups of veins, called the West lodes and Orchard veins, the former 

 cupreous, the latter of lead and silver. The vi^est group consists of three "heavy quartz 

 outcrops," one of them, 10 feet wide, containing numerous strings and bunches of ga- 

 lena, with copper pyrites, gossans, and honeycombed cavities, including '■'■vugs,'''' or 

 cavities lined with crystals of quartz, rarely containing indigo copper. It was traced 

 300 or 400 yards in length. The schists adjacent are greatly stained and incrusted with 

 limonite or iron ore, indicating a highly metalliferous condition for the country. 



The second, or Orchard group of veins, consists of two, each about two feet wide, 

 and apparently true fissure veins, with the compass course N. 50° E. They contain 



