Eighth report of the committee, consisting of Sir G.G. Stokes (chairman), Professor A. Schuster, Mr. G. Johnstone Stoney, Sir H.E. Roscoe, Captain W. de W. Abney, Mr. G.M. Whipple, Professor McLeod, and Mr. G.J. Symons, appointed for considering the best m - Stokes, George Gabriel. (John Wiley & Sons, Inc.,)