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Scientific American, Vol. 50, No. 17 (April 1884) (1884)

leaf 4

An illustration from Scientific American, Vol. 50, No. 17 (April 1884), 1884, leaf 4
thstand the furious gales of cast steel to a very low red—a red that shows only in the tion at Las Vegas of very extensive wood preserving works. to which the rock is exposed. Each gas holder will contain shadow—and then brighten and draw the temper to color, They are to use the Line-Tonnier… … tool steel. A mixture of lead and ity equal to good Scotch stand- 2. 3. tin—a melted mass composed of ard coal gas—is 30,000 cubic pewter, type metal, and soft feet. The meter mixer automati- solder—is not a lead bath. The cally and accurately measures melting and heat holding quali- the proper…

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