. Experiments in the preservative treatment of red-oak and hard-maple crossties . Tie No. 648. Tie No. 689. Tie No. 616. Fig. 1.—Sections of Red-Oak Ties Treated with Gas-House Tie No. 1446. Tie No. 1456. Tie No. 1468. Fig. 2.—Sections of Hard-Maple Ties Treated with Gas-House Oil. RESULTS. 25 and the two-movement creosote-zinc-chlorid processes. In the red-oak ties there seems to be a somewhat greater penetration of creosoteby the Card than by the two-movement process; this difference ismore marked in the hard-maple ties. In this case, also, part ofthe difference shown by the maple ties
. Experiments in the preservative treatment of red-oak and hard-maple crossties . Tie No. 648. Tie No. 689. Tie No. 616. Fig. 1.—Sections of Red-Oak Ties Treated with Gas-House Tie No. 1446. Tie No. 1456. Tie No. 1468. Fig. 2.—Sections of Hard-Maple Ties Treated with Gas-House Oil. RESULTS. 25 and the two-movement creosote-zinc-chlorid processes. In the red-oak ties there seems to be a somewhat greater penetration of creosoteby the Card than by the two-movement process; this difference ismore marked in the hard-maple ties. In this case, also, part ofthe difference shown by the maple ties may be accounted for by thevariability in the amount of sapwood. It should be rememberedthat these processes depend for their efficiency largely upon the zincchlorid, and that the creosote is used principally to retard theleaching out of the salt. The penetration of the zinc chlorid cannot be seen in the illustrations. In Plate VIII the penetrations secured in treatments with gas-houseoil are shown. The penetrations secured in the hard-maple tieswere the most complete of any of the treatments of maple with is accounted for by the low viscosity of the oil in compa
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectwoodpre, bookyear1913
