 | 1856 - Liczba stron: 974
...the depths found by observation are greater than the actual ones; but the bottom was brought up in several cases showing that the lead had reached it,...not obliterated in the curves above it, but reaching nearly to the surface. In the midst of general coincidences there is no one discrepancy which indicates... | |
 | American Association for the Advancement of Science - 1855 - Liczba stron: 398
...on a base of twelve miles is followed by a depression of 300 feet on a base of fifteen miles, arid then by a gentle slope upwards. It is altogether probable...deepest part of the section is a remarkable feature, riot obliterated in the curves above it, but reaching upward to the surface. In the midst of general... | |
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... miles, and then by a gentle slope upwards. It is altogether probable that all the depths found by observation are greater than the actual ones, but the bottom was brought up in the several cases, showing that the lead had reached it, and it is most... 