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Scientific American, Vol. 88, No. 10 (1903) (1903)
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speed of the vessel is shoal water, where mud and sand may be stirred up. shown on the speed dial at all times. Its accuracy is the line does not foul the wheel. The log is also lia- However, no such complaints have been received from ble to injury from driftwood, and heavy seas inter- not affected… … tions of the pointer in the speed-indicator. structure in these cases, so far as the It has been found that the water level in spectroscopic evidence goes, RECORDER, AND A SPEED CHART, © 1903 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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