 | James Croll - 1889 - 142 páginas
...necessary conditions, as Sir Charles Lyell has so clearly shown. " That river," says Sir Charles, " drains a country equal to more than half the continent...sediment is thrown down and arrested on its way to the sea."1 There is no other river in the globe which to my mind better fulfils the required conditions.... | |
 | Sir Charles Lyell - 1896 - 670 páginas
...sea, we can affirm how much on an average has been removed from the general surface in one year ; and there seems no danger of our overrating the mean rate...great height. The Mississippi is also more likely to aiford us a fair test of ordinary denudation, because, unlike the St. Lawrence and its tributaries,... | |
 | Sir Charles Lyell - 1911 - 750 páginas
...sea, we can affirm how much on an average has been removed from the general surface in one year ; and there seems no danger of our overrating the mean rate...is thrown down and arrested on its way to the sea In striking a general average we have to remember that there are large deserts in which there is scarcely... | |
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... been removed from the general surface in one year ; and there seems no danger of our overrating the mean rate of waste by selecting the Mississippi as our example, for that river drains a country equal to more than half the continent of Europe, extends... 
