| Ohio. State Forestry Bureau - 1887 - 234 trang
...1864 and 1877, and that of the river Adda, where it flows out of Lake Como, 13 per cent, between 1842 and 1862, due in each case, says Senator Torrelli,...down, a great number of springs failed totally, and that besides, in the city of Orleans, after the surrounding heights had been thus cleared, nearly all... | |
| Ohio. State Forestry Bureau - 1887 - 234 trang
...1864 and 1877, and that of the river Adda, where it flows out of Lake Como, 13 per cent, between 1842 and 1862, due in each case, says Senator Torrelli,...down, a great number of springs failed totally, and that besides, in the city of Orleans, after the surrounding heights had been thus cleared, nearly all... | |
| Ohio. State Forestry Bureau - 1887 - 234 trang
...flows out of Lake Como, 13 per cent, between 1842 and 1862, due in each case, says Senator f orrelli, of Italy, to the clearings around their feeders. A...down, a great number of springs failed totally, and that besides, in the city of Orleans, after the surrounding heights had been thus cleared, nearly all... | |
| New York (State). Forest Commission - 1887 - 190 trang
...between 1843 and 1862, due in each case, says Senator Torrelli, of Italy, to the clearings around the feeders. A remarkable illustration of the fact that...of springs is given by Mr. Ney, who states that in Erovence, after all the olive trees, which there formed regular forests, had been frozen, in 1822,... | |
| New York (State). Forest Commission - 1887 - 182 trang
...between 1843 and 1862, due in each case, says Senator Torrelli, of Italy, to the clearings around the feeders. A remarkable illustration of the fact that...in the complete failing of springs is given by Mr. Key, who states that in Provence, after all the olive treesj which there formed regular forests, had... | |
| United States. National Waterways Commission - 1912 - 594 trang
....38 .20 .20 .14 .12 .10 .08 .07 2.29 hydrographer, of Alsace, in a paper published in 1875, mentioned that in the Provence, after all the olive trees, which there formed regular forests, and which were frozen in 1822, had been cut down, a great number of springs failed entirely, and that... | |
| 1912 - 598 trang
....08 .28 .22 .07 Total 3.93 4.14 2.29 hydrographer, of Alsace, in a paper published in 1875, mentioned that in the Provence, after all the olive trees, which there formed regular forests, and which were frozen in 1822, had been cut down, a great number of springs failed entirely, and that... | |
| United States. Forest Service, Raphael Zon - 1927 - 122 trang
...deforestation. Edward Ney,60 forester and hydrographer, of Alsace, in a paper published in 1875, mentioned that in the Provence, after all the olive trees, which there formed regular forests, and which were frozen in 1822, had been cut down, a great number of springs failed entirely, and that... | |
| 1920 - 748 trang
...deforestation. Edward Ney,00 forester and hydrographer, of Alsace, in a paper published in 1875, mentioned that in the Provence, after all the olive trees, which there formed regular forests, and which were frozen in 1822, had been cut down, a great number of springs failed entirely, and that... | |
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