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" Placing the maximum of the semi-diurnal curve at 0 hours, in the hypothesis that the high water of the diurnal curve is nine hours in advance of that of the semi-diurnal curve, the two curves cross the line of mean water at three hours, the diurnal curve... "
Senate Documents, Otherwise Publ. as Public Documents and Executive ... - Page 131
by United States. Congress. Senate - 1852
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American Journal of Science

1851
...curve is nine hours in advance of that of the semi-diurnal curve, the two curves cross the line of mean water at three hours, the diurnal curve rising...again at nine hours to its intersection with the mean water line, at which time the diurnal curve has reached its maximum; the semi-diurnal curve attains...
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Summarized Proceedings and a Directory of Members, Volume 4

American Association for the Advancement of Science - Science - 1851
...curve is nine hours in advance of that of the semi-diurnal curve, the two curves cross the line of mean water at three hours, the diurnal curve rising...again at nine hours to its intersection with the mean water line, at which time the diurnal curve has reached its maximum ; the semi-diurnal curve attains...
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Summarized Proceedings and a Directory of Members, Volume 4

American Association for the Advancement of Science - Science - 1851
...curve is nine hours in advance of that of the semi-diurnal curve, the two curves cross the line of mean water at three hours, the diurnal curve rising...again at nine hours to its intersection with the mean water line, at which time the diurnal curve has reached its maximum ; the semi-diurnal curve attains...
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House Documents, Otherwise Publ. as Executive Documents ..., Volume 4, Part 1

United States. Congress. House - United States
...rising and the semiliurnal falling; at six hours, the semi-diurnal curve has reached its naxirnum, and rises again at nine hours to its intersection...which time the diurnal curve has reached its maximum; he semi-diurnal curve attains its greatest rise at twelve hours, and the nean level at fifteen ; the...
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