. American forestry. Forests and forestry. COMMERCIAL USES OF LONGLEAF PINE 901. Coltrtcsy of the Southern Pine Assoeiiitiun. LONGLEAF PINE TREES TAPPED FOR TIIICIK "GUM" Thousands of acres of these trees are tapped in this manner each year for their "gum," (Oleo-resin) from which resin and turpentine are derived. The old methods of tapping resulted ni killing a great many trees in a few years but the modern and improved methods are not so liarmtul. Formerly the "gum" was collected in holes or boxes out of the base of the trees. Now cup systems are used, the one i
. American forestry. Forests and forestry. COMMERCIAL USES OF LONGLEAF PINE 901. Coltrtcsy of the Southern Pine Assoeiiitiun. LONGLEAF PINE TREES TAPPED FOR TIIICIK "GUM" Thousands of acres of these trees are tapped in this manner each year for their "gum," (Oleo-resin) from which resin and turpentine are derived. The old methods of tapping resulted ni killing a great many trees in a few years but the modern and improved methods are not so liarmtul. Formerly the "gum" was collected in holes or boxes out of the base of the trees. Now cup systems are used, the one invented by Prot. Herty a few vears ago being considered among the best. Turpentine stills are scattered all over the yellow pme belt. 1 he "gum gathered trom the trees is jilaced in these stills and heated. The lighter portion comes to the top and passes olf as va])or, which when condensed becomes the turpentine of commerce. The heavier yiortion is drawn off from tlic bottom. It becomes resin. of resin :inil timber, and many cup devices were tried, so as to (1(1 awiiy with the bo-x, but it was until about til- teen years ago that Professor Charles Herty perfected the cup and gutter system which bears his name. Other cup systems have come in since, and today the old waste- ful "boxing" system is rapidly being abandoned. Crude resin is c'lllected in barrels, hauled to the tur- pentine stills and distilled. The turpentine being the lighter product comes off tirst and is collected in barrels The heavier resin remains in the still and is drawn otif at its base. In the early days tur])eniine was the most valuable product, but now resin is more in demand. Today the title of "naval stores" is rather a misnomer, since their use is now so largely in the arts and industries rather than in shipping. Turpentine and resin enter into the manufacture of paints, varnishes, papers, soaj), lubricants, rubber goods and in the pharmaceutical in- dustries. Turpentine sells f
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforestsandforestry
