25 JANUARY 1890, Page 43

Time and Tide. By Sir R. S. Ball. (S.P.C.K.)—The movements

of the tide are among the most important facts which affect the economy of the earth ; hence there should be no lack of readers for Time and Tide. Tides themselves are so interesting, that we feel sure that those who know a little about them will be eager to learn more. Searchers after knowledge of this kind, be they old cr young, cannot do better than read Sir It. Ball's Time and Tide. After all, these great physical laws should, as far as they are known, become common property ; and when a great astronomer condescends to explain them, the opportunity should not be lost.