File:The decay of timber and methods of preventing it (1902) (14577295109).jpg

Identifier: decayoftimbermet14vons (find matches)
Title: The decay of timber and methods of preventing it
Year: 1902 (1900s)
Authors: Von Schrenk, Hermann, 1873-1953 United States. Bureau of Plant Industry
Subjects: Wood Agriculture
Publisher: Washington : U.S. G.P.O.
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library

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paid in particular to theincreased length of life which various methods of treatment gave totimber, as shown by the actual position in service of railway ties,telegraph poles, mine timbers, etc.; furthermore, to all those attendantfactors which influence the life of structural timber, such as the con-dition of the soil in which timber is placed, the drying before andafter treatment, the shape of timbers, the relation of heart and sapwood, etc. In the following pages the results of the observations will be givenin brief, to be followed by general considerations. Before giving thewriters personal observations, attention is called to the report pub-lished under the direction of 31. Vladimir Herzenstein, of St. Peters-burg, by the Sixth International Railway Congress, entitled QuestionVIII—The Preservation of Timber, Paris, 1900. In this report theanswers sent in by 87 railways, of these 79 European, to the 71 ques- Bui. 14, Bureau of Plant Industry, U. S. Dept. of Agriculture. Plate X.
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Fig. 3. Median section of Baltic pine tie, impregnated with tar oil, showing how decay(This tie is still good for several years.) Bui. 14, Bureau of Plant Industry, U. S. Dept. of Agricu!t< Plate XI.

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