Head Master and Professor of Physics, Royal Naval Engineering College, Devonport. Distinguished as a physicist, especially for his researches on surface tension and on the stretching of liquids. Author of the following papers: - 'On the Forms assumed by Drops of Liquid falling Vertically on a Horizontal Plate' (Proc Roy Soc, 1876-1877); 'On the Spontaneous Segmentation of a Liquid Annulus' (ibid, 1879); 'On Pendent Drops' (ibid, 1881); 'On Impact with a Liquid Surface' (ibid, 1882); 'On the Horizontal Motion of Floating Bodies under the Action of Capillary Forces' (Phil Mag, 1883); On the Surface Forcesin Fliuds' (ibid, 1884); 'On the Error involved in Prof Quincke's Method of Calculating Surface Tensions from the Dimensions of Flat Drops and Bubbles' (ibid, 1885); 'A Capillary Multiplier' (ibid); 'On Tensional Stress and Strain within a Liquid' (Brit Assoc, Sect A, 1888); 'On the Discharge of Electrification by Flames' (Brit Assoc, Rept Electrolysis Comm, 1889); 'on the Mechanical Stretching of Liquids, an Experimental Determination of the Volume-Extensibility of Ethyl Alcohol' (read before the Roy Soc, Feb 4, 1892). Also of the following: - 'Physical Laboratory Practice,' and 'The Dynamics of Rotation.