Bulletin Volume 213-217

Bulletin Volume 213-217

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1911 edition. Excerpt: ...Lenzites sepiaria, although no experiments have been made to determine this point. TREATMENT WITH CHEMICALS. The treatment of timber with solutions of chemicals which have a deleterious action on the wood-rotting fungi is by far the most efficient method of preventing decay. There is absolutely no question as to the efficiency of this method, as numerous tests show. The following publications of this department may be cited in this connection: Crawford, 1907a, 1907b; Nelson, 1907; Von Schrenk, 1902, 1904; Sherfesee, 1908a, 190Sb; Smith, 1908; Weiss, 1907, 1908. Since this fungus will not grow in alkaline media, it is probable that those solutions which are alkaline will prove most efficient, other conditions being alike. Besides the general experiments of the many who have treated wood with various chemicals, there is an extensive test which has given very definite results as regards Lenzites sepiaria and the decay caused by it. In 1902 (Von Schrenk, 1904) a piece of track was laid with experimental ties, both treated and untreated, in eastern Texas. The following coniferous timbers were used: Tamarack (Larix laricina) and hemlock (Txuga canadensis) from Wisconsin; longleaf Pinus palustris), loblolly (P. taeda), and shortleaf (P. ecliinata) pine from Texas. Eighteen months after the ties were placed in the track the writer assisted in the examination of them. The results are noted herein only for the coniferous species of wood and in connection with Lenzites sepiaria. The untreated hemlock ties were seriously rotted, 90 out of 101 having sporophores of Lenzites sepiaria and of Polystictus veriscolor Fr. The former was present on most of the hemlock tics which bore fruiting bodies. The untreated shortleaf pine had 31 out of 100 which...show more

Product details

  • Paperback
  • 189 x 246 x 10mm | 345g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236956176
  • 9781236956170