. Ökonomie der Forstwirtschaft [microform]: ein Nachschlagewerk für Studenten der politischen Ökonomie und professionell und Studenten der Forstwirtschaft. Forêts et Forstwirtschaft; Politique forestière; Forstpolitik; die Wälder und die Forstwirtschaft. Ökonomie DER FORSTWIRTSCHAFT. Mit drei Schmerz der parallelen sUtioni, und 1875 Prutiia ettablif hed eine Untersuchung, die noch Con-tinues, mit siebzehn Stationen, Beobachtungen an jedem auf Instrumente, die in der Gesamtstruktur und ein anderes in einem benachbarten iield eingestellt. 1884, Österreich leitete eine Reihe von radialen Stationen, an denen nicht nur die Differenz der meteorologischen

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. Economics of forestry [microform] : a reference book for students of political economy and professional and law students of forestry. Forêts et sylviculture; Politique forestière; Forest policy; Forests and forestry. ECONOMICS OF FORESTRY. with three pain of parallel sUtioni, and in 1875 Prutiia ettablif hed an investigation, which still con- tinues, with seventeen stations, observations being taken at each on instruments set up within the forest and another set in a neighboring iield. In 1884, Austria instituted a series of radial stations at which not only the difference of meteorological data within and without a forest, but the influence of the forest on its surroundings, were to be meas- ured directly. Although, by these many and long continued observations, some valuable facts have been estab> lished, and our ideas as to the elements which enter into the problem have been cleared up, the real object of inquiry, namely, whether and how far forests exercise an influence upon climate, cannot be said to have progressed far to a solution, and it is questionable whether the present methods will ever lead to a solution. The reasons for this failure are at least three- fold. Both instruments and methods of meteoro- logical inquiry are as yet unsatisfactory. When, for instance, rain gauges will, according to their construction, the manner of their position, and the character of the wind and rain, during the same storm, register amounts varying from 7 to 40 per cent, we are without any means of appljring a con- stant factor of correction, and it would appear that no reliance can be placed on such measurements for the purpose of determining the difference of rain-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Fernow, B. E. (Bernhard Eduard), 1851-1923. New York : T. Y. Crowell

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• bookcentury1900
• bookdecade1900
• booksubjectforests
• bookyear1902