Bulletin of the of Agriculture . Penetration in White Oak—Heartwood (Quercus alba). 1, piece No. 77 treated 30 minutes; 2, piece No. 78 treated 60 minutes; 3, piece No. 79 treated 120 minutes. Bui. 606, U. S. Dept. of Agriculture. Plate Penetration in Red-Heart Beech (Faqus atropunicea). 1, piece No. 89 treated 30 minutes; 2, piece No. 90 treated 60 minutes; 3, piece No. 91 treated120 minutes. Compare the. penetration in this wood with that shown in Plate VII, show-ing the penetration in white-heart beech. RESISTANCE OF HARDWOODS TO CREOSOTE. 9 FACTORS AFFECTING PENETRATION
Bulletin of the of Agriculture . Penetration in White Oak—Heartwood (Quercus alba). 1, piece No. 77 treated 30 minutes; 2, piece No. 78 treated 60 minutes; 3, piece No. 79 treated 120 minutes. Bui. 606, U. S. Dept. of Agriculture. Plate Penetration in Red-Heart Beech (Faqus atropunicea). 1, piece No. 89 treated 30 minutes; 2, piece No. 90 treated 60 minutes; 3, piece No. 91 treated120 minutes. Compare the. penetration in this wood with that shown in Plate VII, show-ing the penetration in white-heart beech. RESISTANCE OF HARDWOODS TO CREOSOTE. 9 FACTORS AFFECTING PENETRATION. The penetrability of wood is greatly influenced by many factorsnot studied in these tests. Trees of the same species grown in differ-ent localities may differ greatly in their properties, hence the naturalvariability of the wood may largely influence penetration. The char-acter of the penetration is an important factor. So also is the mois-ture content of the wood. Timber which has just been cut and whichis, therefore, in the green condition is, as a rule, very much moreresistant to treatment than that which has had the moisture method of seasoning the timber may also have an importantbearing on the resulting penetration and absorptio
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
