This book details the author's study of tidal observations at Cat Island, Louisiana. The author decomposes tidal curves into their diurnal and semidiurnal components, utilizing the theory of the interference of these two waves to produce the observed tidal wave. The results of this decomposition are compared with curves of sines, resulting in satisfactory representations of the observed tides. The author then discusses the heights and times of the diurnal and semidiurnal waves, finding that the diurnal wave's height depends on the moon's declination and the sun's declination, while the semidiurnal wave exhibits a half-monthly inequality in height and time. The author's findings contribute to the understanding of tidal phenomena and provide valuable insights for further research in the field.
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