. Transactions. opted stellite lathe-tools throughout his comparative test gave the following results: On phosphor-bronze, 125 ft. per min., using superior high-speed steel; using stellite, 900 ft. per minute. On tool-steel, 80 ft. per min., using superior high-speed steel; using stellite, 133 ft. per minute. On steel seamless tubing, using superior high-speed steel, 100 ft. per min.; using stellite, 400 ft. per minute. On cast-iron, using superior high-speed steel, 100 ft. per min.; using stellite, 200 ft. per minute. * Received Dec. 2, 1912. 580 THE ST. HELENS MINING-DISTRICT. The St
. Transactions. opted stellite lathe-tools throughout his comparative test gave the following results: On phosphor-bronze, 125 ft. per min., using superior high-speed steel; using stellite, 900 ft. per minute. On tool-steel, 80 ft. per min., using superior high-speed steel; using stellite, 133 ft. per minute. On steel seamless tubing, using superior high-speed steel, 100 ft. per min.; using stellite, 400 ft. per minute. On cast-iron, using superior high-speed steel, 100 ft. per min.; using stellite, 200 ft. per minute. * Received Dec. 2, 1912. 580 THE ST. HELENS MINING-DISTRICT. The St. Helens Mining-District. BY HORACE V. WINCHELL, MINNEAPOLIS, MINN.(Cleveland Meeting, October, 1912.) St. Helens mining-district, indicated in sketch-map, ,is chiefly in Townships 9 and 10 North, Ranges 5 and 6 Eastof the Willamette meridian, in Skamania county, Wash. Thereis no railroad or even a wagon-road at present connecting itwith any base of supplies; access is usually by wagon-road for. SCALE OF MILES Fig. 1.—Sketch-Map of the State of Washington. about 50 miles from the town of Castle Rock to Spirit lake,and from that point by pony-trail from 6 to 10 miles farther. 20 years ago two German farmers, totally inexperi-enced in prospecting, penetrated this region upon a hunting-and fishing-trip. Their attention was drawn to numerous jointsand crevices filled with black, glistening tourmaline, and con- THE ST. HELENS MINING-DISTRICT. 581 taining interspersed crystals of pyrite, chalcopyrite, arseno-pyrite, specular hematite, magnetite, and occasionally galenaand zinc-blende. It seemed to them that they had stumbledupon a veritable Golconda, perhaps the center of mineralizationof the entire region. After making as many mining-locationsas possible, considering their limited supply of food, they re-turned to their homes with all the sensations of millionaires,and a determination to come again in the following spring andlocate a few more bonan
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