22 DECEMBER 1906, Page 27

Time and Clocks. By H. H. Cunynghame, M.A. (A. Constable

and Co. 6s. net.)—Mr. Cunynghame, after discussing the subject of time generally, proceeds to describe the sun-dial, the water- clock (with a notice of the complication caused by the division of the day into twelve hours), and sand-glasses. In due course he comes to clocks in their various forms. He is always scientific, and discusses the principle of the technical contrivances which lie describes.