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 438
... change much in twenty - five years , to say nothing of longer spans . However , to plan on the basis of the best knowledge of the future we now have , and revise as that knowledge changes , is the only way to bring order into current ...
... change much in twenty - five years , to say nothing of longer spans . However , to plan on the basis of the best knowledge of the future we now have , and revise as that knowledge changes , is the only way to bring order into current ...
Page 452
... changes were comparatively so slow as to be al- most imperceptible . In America , on the contrary , large spaces were laid bare when a new plantation was established and the colonists built their dwellings in sur- roundings which had ...
... changes were comparatively so slow as to be al- most imperceptible . In America , on the contrary , large spaces were laid bare when a new plantation was established and the colonists built their dwellings in sur- roundings which had ...
Page 453
... changes in the seasons that they were now able to cultivate crops which were unknown to their predecessors . They felt that a They felt that a new power had been placed at their disposal . In Europe , the inhabitants had always accepted ...
... changes in the seasons that they were now able to cultivate crops which were unknown to their predecessors . They felt that a They felt that a new power had been placed at their disposal . In Europe , the inhabitants had always accepted ...
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