 | George Perkins Marsh - 1864 - 592 страници
...of the snow in the woods does not indicate much loss in this way. Very small deposits of snowflakeb remain unevaporated in the forest, for many days after...dissolved in sixteen minutes, while the latter had a small unthawcd proportion remaining at the end of eighty -five minutes." f The snow in the woods... | |
 | George Perkins Marsh - 1865 - 581 страници
...melt it or a wind powerful enough to drift it away. Even when bared of their leaves, the trees of & wood obstruct, in an important degree, both the direct...dissolved in sixteen minutes, while the latter had a small unthawed proportion remaining at the end of eighty-five minutes." f The snow in the woods is... | |
 | George Perkins Marsh - 1874 - 702 страници
...the whole year. * the wind by a tight board fence about five feet high, while another body of enow, much more sheltered from the sun than the first, six...passing over the open vessel, while the other was proteectd by a cover. The snow in the first was dissolved in sixteen minutes, while the latter had... | |
 | George Barrell Emerson - 1875 - 534 страници
...week, while the smaller body was nut wholly gone at the end of the second week." " Experiment Second. Equal quantities of snow were placed in vessels of...protected by a cover. The snow in the first was dissolved iu sixteen minutes, while the latter had a small untliawed portion remaining at the end of eighty-five... | |
 | George Barrell Emerson - 1878 - 518 страници
...week, while the smaller body was not wholly gone at the end of the second week." " Experiment Second. Equal quantities of snow were placed in vessels of...dissolved in sixteen minutes, while the latter had a small unthawed portion remaining at the end of eighty -five minutes ; that is, it melted five and... | |
 | George Perkins Marsh - 1882 - 720 страници
...the whole year. * the wind by a tight board fence about five feet high, while another body of enow, much more sheltered from the sun than the first, six...passing over the open vessel, while the other was proteectd by a cover. The snow in the first was dissolved in sixteen minutes, while the latter had... | |
 | George Perkins Marsh - 1885 - 666 страници
...rays on the snow and the movement of drying and thawing winds. Dr. Piper (Treet of America, p. 48) records the following observations : " A body of snow,...dissolved in sixteen minutes, while the latter had a small unthawed proportion remaining at the end of eighty-five minutes." The snow in the woods Is... | |
 | 1893 - 208 страници
...sheltered from the sun, but fully exposed to the wind, was melted in less than a week. In the second, equal quantities of snow were placed in vessels of the same kind and size and exposed to the same temperature, one being covered and the other having a current of air constantly... | |
 | 1893 - 214 страници
...sheltered from the sun, but fully exposed to the wind, was melted in less than a week. In the second, equal quantities of snow were placed in vessels of the same kind and size and exposed to the same temperature, one being covered and the other having a current of air constantly... | |
 | 1902 - 208 страници
...sheltered from the sun, but fully exposed to the wind, was melted in less than a week. In the second, equal quantities of snow were placed in vessels of the same kind and size and exposed to the same temperature, one being covered and the other having a current of air constantly... | |
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... much more sheltered from the sun than the first, six feet in depth, and about sixteen feet square, was fully exposed to the wind. "When the thaw came on, which lasted about a fortnight, the larger body of snow was entirely dissolved in less than a... 
