. Canadian forestry journal. Forests and forestry -- Canada Periodicals. 144 Canadian Forestry Journal, November-December, [CourU'tiii Ameyiran Forestry. Wood Preservation Room, Forest Products Laboratory. Open-tank tieatiuoiit on left; commercial treating plant in centre. gaged in investigating such prob- lems as the analysis and grading of (•ommercial creosote, the analysis and grading of wood turpentine, an<] methods of analyzing treated wood to determine the kind and quantity of preservative in it. The section of engineering has to do with the design of machines and apparatu
. Canadian forestry journal. Forests and forestry -- Canada Periodicals. 144 Canadian Forestry Journal, November-December, [CourU'tiii Ameyiran Forestry. Wood Preservation Room, Forest Products Laboratory. Open-tank tieatiuoiit on left; commercial treating plant in centre. gaged in investigating such prob- lems as the analysis and grading of (•ommercial creosote, the analysis and grading of wood turpentine, an<] methods of analyzing treated wood to determine the kind and quantity of preservative in it. The section of engineering has to do with the design of machines and apparatus to be used in saving wood waste, and so complete tlie woik ( f other hal'oratories which have found that certain wood waste is capable of beiiic utilized. Tliis section takes up sucli work as the design of an ex- perimental grinder for the manufac- ture of ground-w^ood pulp from woods other than spruce; the de- sign of a dry-kiln for experimental purnoses; the desi"enaration of standard desisrns for differonl types of treating plants. Some Results. The work of the laboratory has shown good results. In little more than a year after its establishment important discoveries had been made. It was found, by the wood pulp section that jack pine and hem- lock were satisfactory for ground- wood pulp, with the ordinary com- mercial equipment, slight variations in the process of manufacture only being necessary. Jack pine, dead or green tamarack and wood waste have been found satisfactory for chemical pidp, and good Kraft i>ap- er has been made from the clear waste of Western yellow pine and l^outhern yellow pine. Western yellow pine has been tried for the ]irocluction of various resinous products, and 's found to nvoduce more resin per year tlian the F^outhern yellow pine. A .•^tiM lias been devised for the minnfa''-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of thes
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