Symposium on Forestry and the Public Welfare: Papers Read Before the American Philosophical Society, Autumn General Meeting November 17, 1944American philosophical society, 1945 - 90 pages |
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Page 404
... material of industry and commerce will , of course , again be in competition with other materials , but in spite of this , will undoubtedly permanently be required in large quantities and will continue to contribute importantly to the ...
... material of industry and commerce will , of course , again be in competition with other materials , but in spite of this , will undoubtedly permanently be required in large quantities and will continue to contribute importantly to the ...
Page 410
... materials from wood that compete with certain metals . Chemical in- dustries are opening up amazing possibilities in deriving from wood as raw material new chem- icals based on fermentation of carbohydrates , even to the making of ...
... materials from wood that compete with certain metals . Chemical in- dustries are opening up amazing possibilities in deriving from wood as raw material new chem- icals based on fermentation of carbohydrates , even to the making of ...
Page 431
... material is permissible only after 4 P.M. and before midnight . When the area to be burned is within two hundred feet of woodland or other ground cover that may become ignited , and in the absence of snow or of other natural escape ...
... material is permissible only after 4 P.M. and before midnight . When the area to be burned is within two hundred feet of woodland or other ground cover that may become ignited , and in the absence of snow or of other natural escape ...
Contents
Forests in Relation to Soil and Water | 399 |
Worldwide Needs of Woods as a Land Conservation Crop | 408 |
Americas Role in Meeting World Timber Needs | 418 |
3 other sections not shown
Common terms and phrases
agricultural American forest American Philosophical Society André François André Michaux ashes billion burning cedar cent century clearing climate cooperation corn crop cubic feet cultivation deforestation destruction developed district economic especially Europe European farm felled fence fire forest conservation forest industries forest land forest owners forest products Forest Service Forests and Parks fuel Government ground growing growth Humphrey Marshall hundred important improvement cutting increase JEREMY BELKNAP John Bartram John Evelyn labor Lebanon less logs lumber lumber industry manufacture mast measures ment Michaux mountains nature needs November 17 operation ownership paper pasture Pennsylvania Philadelphia pine plants pot ashes present problem protection public ownership pulp pulpwood raw materials region Regulation settlements settlers ship slopes soil stands stumps supply surface runoff timber timber products timberland tion tracts Travels trees United Virginia wind wood products wood pulp woodland woodlot