Proceedings of the Society of American Foresters, Volúmenes1-10Society of American Foresters., 1915 List of members in vol. 1, 3, 6, 8, 11. |
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Términos y frases comunes
acre administration agricultural altitude American Foresters amount average Black Hills board feet branches brush burned bushel of cones cent classes climatic conkiness cost crop crown curves Del Norte County diameter district Douglas fir dune effect Engelmann spruce fact forest lands Forest Service forestry frustum form factor fungus germination grass grazing growing important inches increase inflammable material light lines logging method Monterey pine mountains National Forests necessary period piles plants practice prairie present problems production railroads ranger ranger school reason region reproduction sand secured seed per bushel seedlings silvical silviculture slash slope Society of American species spruce square miles stand stumpage sustained annual yield temperature timber timber plans tion tracheids trees volume tables white pine wood yellow pine yellow-pine Poria yield management
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Página 428 - State, shall twice in each year cut and burn off or remove from its right of way all grass, brush or other inflammable material, but under proper care, and at times when the fires thus set are not liable to spread beyond control.
Página 100 - ... years; he shall have had responsible charge of work for at least five years, and shall be qualified to design as well as to direct engineering works. Graduation from a school of engineering of recognized reputation shall be considered as equivalent to two years
Página 443 - Year-long protection of the range favors plant growth and seed production, but does not insure the planting of the seed. Moreover, it is impracticable because of the entire loss of the forage crop and the fire danger resulting from the accumulation of inflammable material.
Página 443 - Yearlong protection [against grazing] of the range favors plant growth and seed production but does not insure the planting of the seed. Moreover, it is impracticable, because of the entire loss of the forage crop and the fire danger resulting from the accumulation of...
Página 100 - Science of thirty-two years of age, or over, and shall have been in the active practice of his profession for at least ten years...
Página 172 - There is hardly a township of the 180 millions of acres of National Forest lands but what one-fifth to one-third is suitable only for game range. I mean by this that of this vast acreage at least one-fifth to onethird cannot now, and can never, be used by domestic stock.
Página 92 - ... (either alone or in combination with any other word or words), or of " dental practitioner," or any name, title, addition, or description implying that he is registered under this Act or that he is a person specially qualified to practise dentistry, unless he is registered under this Act.
Página 77 - It is desirable and necessary that every person living should know that systematic slaughter will exterminate the most populous wild species on earth, and accomplish that result in a very few years. Let it be remembered for all time that no wild species of mammal or bird can withstand systematic slaughter for commercial purposes.
Página 426 - The public service commission must upon the request of the conservation commission and on notice to the person or companies affected, require any person, railroad or other company having a railroad running through forest lands, to adopt such devices and precautions against setting fire upon its line in such forest lands as the public interest requires.
Página 90 - To further the cause of forestry in America by fostering a spirit of comradeship among foresters; by creating opportunities for a free interchange of views upon forestry and allied subjects, and by disseminating a knowledge of the purpose and achievements of forestry.