Contributions in geographical exploration . «?^ A DUiNE OF WIND-BLOWN ASH NEAR KODIAK. The rapidly shifting surface makes it impossible for plants to start.(Vegetation Station 59). QUICKSANDS IN THE SWAMPS. Quite a different set of conditions prevail in the numerousswamps, shallow ponds and tundras which were formerlycommon. Here also the deposit of ash has been increased bysecondary accumulations, in this case brought down by thestreams. There is no tendency for this ash to blow aboutfor it is kept constantly soaked. It is, moreover, of quite adifferent physical constitution from the loose sa
Contributions in geographical exploration . «?^ A DUiNE OF WIND-BLOWN ASH NEAR KODIAK. The rapidly shifting surface makes it impossible for plants to start.(Vegetation Station 59). QUICKSANDS IN THE SWAMPS. Quite a different set of conditions prevail in the numerousswamps, shallow ponds and tundras which were formerlycommon. Here also the deposit of ash has been increased bysecondary accumulations, in this case brought down by thestreams. There is no tendency for this ash to blow aboutfor it is kept constantly soaked. It is, moreover, of quite adifferent physical constitution from the loose sand of the should be explained that there was a marked differencein consistency between the three layers of ash as they fell. 40 lire Ohio Journal of Science [Vol. XIX, No. 1,
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