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266 Search Results

  • Publications
    Forestry publication document

    [Archive] The Douglas fir chermes (chermes cooleyi)
    Lead Author: Forestry Commission
    This bulletin embodies the results of an investigation into the life history of Chermes (Gillettea) cooleyi Gillette, an American species of the family Chermesidae, which has made its appearance upon the Douglas fir in this country. The insect Chermes cooleyi lives partly on the Douglas fir and partly on the Sitka spruce. It is not […]
  • Publications
    Forestry publication document

    [Archive] Survey of the forest insect conditions in the British Isles 1919
    Lead Author: Forestry Commission
    A survey was started in May 1919, by the Interim Forest Authority, to ascertain the forest insect conditions in the British Isles, with special reference to felled areas and recently formed plantations. The main object of the survey was to determine the location, extent, and nature of the chief forest insect outbreaks and to decide […]