 | 1903 - Страниц: 806
...terrestrial magnetism during the last century, not only would science have been miserably poorer, but it is not too much to say that the modern iron or steel steamship traversing the ocean on the darkest night at great speed would have been almost an impossibility, whereas with their... | |
 | 1904 - Страниц: 1106
...terrestrial magnetism during the last century, not only would science have been miserably poorer, but it is not too much to say that the modern iron or steel steamship traversing the ocean on the darkest night at great speed would have been almost an impossibility, whereas with their... | |
 | Smithsonian Institution. Board of Regents - 1904 - Страниц: 1104
...terrestrial magnetism during the last century, not only would science have been miserably poorer, but it is not too much to say that the modern iron or steel steamship traversing the ocean on the darkest night at great speed would have been almost an impossibility, whereas with their... | |
 | South African Association for the Advancement of Science - 1907 - Страниц: 696
...terrestrial magnetism during the last century, not only would Science have been miserably poorer, but it is not too much to say that the modern iron or steel...impossibility ; whereas with their aid the modern navigator* ran drive their ships at a speed of 26.5 statute miles an hour with comparative confidence,... | |
 | Smithsonian Institution. Board of Regents - 1904 - Страниц: 1104
...travelers by land and observers at sea in the Held of terrestrial magnetism during the last centuiy, not only would science have been miserably poorer, but it is not too much to say that the modern iron or steel steamship traversing the ocean on the, darkest night at great speed... | |
 | 1903 - Страниц: 826
...terrestrial magnetism during the last century, not only would science have been miserably poorer, but it is not too much to say that the modern iron or steel steamship traversing the ocean on the darkest night at great speed would have been almost an impossibility, whereas with their... | |
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Had it not been for the charts compiled from the results of the untiring labours of travellers by land and observers at sea in the field of terrestrial magnetism during the last century, not only would science have been miserably poorer, but it is not... 