are those at the City (1908); Roads of Destiny (1909); Options (1909); Whirligigs (igio); Strictly Business (1910); Sixes and Sevens (1911); Rolling Stones (1912); and pé. 2 (1922); N. Davey, Stidies in Tidal Power (1921); A. F. B. Jewett, “‘ Telephone Repeaters,” Trans. Amer. Soc. of Chem. Ind., 1924-5, papers by 13 American authors (J. G., 32, 1924) has shown that a limit to