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Show Prcscrv.tifir Wood, A curious by-product of zlno is chloride chlo-ride iir suits of lluc, which formerly went tu waste, but now Is tixod as a wood preservative by rallrouds, bridge-builders bridge-builders and dock-builders, and for the protection of shingles, clapboards, pll iara and y other wood that Is ox-pi'Kcd ox-pi'Kcd to moisture or Influences that cause decay. Tho salts of zinc, Id solution, solu-tion, by hydraulic pressure are forced lulu the pores of the wood, which Is then hoakod in a strong solution of t innlu und glue. Tho Ales and piling now used on the Santa Fo and Southern South-ern Pacltlo and other Western roads arc treated in this munnor. The railway rail-way companies named use from 3.000,-m 3.000,-m to 4,000,000 pounds year each, C With this lieiitiiipiit h pine e, which Is the only kind thai can lo louud out in the mountain country, will last three Hmea ns long ns one of oak. Clilcgo Record. |