 | 1836 - 430 páginas
...had continued, and that at the point indicated the depth was not more than four fathoms and a-half. In 1830 the same observers made new soundings, which...been elevated half a fathom. It was found to extend 800 metres from east to west, and 500 from north to south. The submarine surface augmented gradually... | |
 | 1836 - 652 páginas
...had continued, and that at the point indicated the depth was not more than four fathoms and a-half. In 1830 the same observers made new soundings, which...been elevated half a fathom. It was found to extend 800 metres from east to west, and 500 from north to south. The submarine surface augmented gradually... | |
 | 1836 - 534 páginas
...the submarine land had continued, and that at the point indicated the depth was not more than four fathoms and a half. In 1830 the same observers made...new soundings, which enabled them to determine the foi-m and extent of the mass of rock, which in less than a year had been elevated half a fathom. It... | |
 | 1836 - 898 páginas
...the submarine land had continued, and that at the point indicated the depth was not more than four fathoms and a half. In 1830, the same observers made...been elevated half a fathom. It was found to extend 800 metres from east to west, and 500 from north to south. The submarine sarface augmented gradually... | |
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... Colonel Bory and the author visited the island in 1829, they were able not only to confirm the truth of Olivier's statement, but also to ascertain, by various soundings, that the rise of the submarine land had continued, and that at the point indicated... 