Statement of Work Done by the Pennsylvania Department of Forestry During 1901 and 1902, Together with Some Suggestion Concerning the Future Policy of the Department, and Also Brief Papers Upon Subjects Concerned with ForestryDepartment of Forestry, 1898 |
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Términos y frases comunes
Acre-Proof acres Agriculture amount annual average band saw bark bark-beetle beetle boom Borer burned cent cherry chestnut circular saw Commissioner of Forestry Commonwealth condition conifers cost covered cribs cubic feet cultivation Cynips destroyed destructive diameter disease drainage drainage basin edger engine evaporation expenses flood flow forest fires fungi fungus furnish gall gallons gang ground growth hemlock hickory horse power hundred inches infested insects J. T. Rothrock larvæ leaf length locust log-loaders logs manufactured maple method million feet mining one-half operations owner Pennsylvania Perry county placed plants Potter county protection rain rainfall river rock oak roots Section seed side slabbing soil South Mountain species spores spring spruce square miles steam feed streams supply surface Susquehanna Susquehanna boom Susquehanna river taken thousand feet timber timber lands tion trees trimmer twigs white oak white pine Williamsport wood yellow pine young
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Página 24 - ... clerk of said board of commissioners, and he shall keep a correct record of the proceedings of said board in a book to be provided for the purpose, and shall file and preserve all...
Página 28 - ... elms shall be placed nearer than seventy feet; no row of maples or other forest trees nearer than fifty feet, except locust, which may be set thirty feet apart...
Página 13 - That it shall be the duty of the commissioners of the several counties of this commonwealth to appoint persons under oath, whose duty it shall be to ferret out and bring to punishment all persons who, either wilfully or otherwise, cause the burning of timber lands, and to take measures to have such fires extinguished where it can be done ; the expenses thereof to be paid out of the county treasury...
Página 20 - Section 1. Be it enacted, &c., That from and after the first day of January, Anno Domini one thousand eight hundred and...
Página 94 - ... till the approach of winter, during which they remain at rest in a torpid state. In the spring they bore through the sap-wood, more or less deeply into the trunk, the genera,! course of their winding and irregular passages being in an upward direction from the place of their entrance.
Página 15 - That all acts or parts of acts inconsistent herewith be, and the same are hereby, repealed.
Página 16 - That in consideration of the public benefit to be derived from the planting and cultivation 'of forest or timber trees, the owner or owners of any land in this Commonwealth planted with forest or timber trees in number not less than twelve hundred to the acre, shall, on making due proof thereof, be entitled to receive annually from the commissioners of their respective counties, during the period that the said trees are maintained in sound condition upon the said land, the following sums of money...
Página 94 - ... of wood, to get rid of which the grubs are often obliged to open new holes through the bark. The seat of their operations is known by the oozing of the sap and the dropping of the sawdust from the holes. The bark around the part attacked begins to swell, and in a few years the trunks and limbs will become disfigured and weakened by large porous tumors, caused by the efforts of the trees to repair the injuries they have suffered.
Página 94 - In the month of September these beetles gather on the locust trees, where they may be seen glittering in the sunbeams with their gorgeous livery of black velvet and gold, coursing up and down the trunks in pursuit of their mates, or to drive away their rivals, and stopping every now and then to salute those they meet with a rapid bowing of the shoulders, accompanied by a creaking sound, indicative of recognition or defiance. Having paired, the female, attended by her partner creeps over the bark,...
Página 10 - That, at any time from and after the first day of January, anno Domini one thousand eight hundred and...