Irving, [Christopher], d. 1856. [from old catalog], Ortmann, Anselm. [from old catalog] · Baltimore, Md., New York, J. Murphy company · leaf 56
ey occur at the time of flrst quarter and lastquarter of the moon. • Q. 9. How much higher, about, are the spring tidesthan the neap tides? A. The spring tides are about If times as highas the neap tides. THE TIDES. 39 Q. 10. Are tides of any use ? A. Yes, at time of flood tide large ships can…
Astronomy
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