| Citation | Assistant in the Department of Minerals, British Museum (Nat Hist). Has improved the Adams instrument for the measurement of optic axal angles; devised a form of goniometer for measuring the angles of growing crystals; and a stage-goniometer for use with the microscope. Distinguished as a mineralogist and mineralogy, 1882-1894, as under: - 'Cerussit von Croix' (Zeitsch fur Krystall, vi); 'The Crystalline Form of Meneghinite' (Mineral Mag, v); 'Hemihedrism of Cuprite' (Phil Mag, xviii); 'Monagite from Cornwall and Connellite' (Mineral Mag, vi); 'Crystallography of Bromostrychnine' (Journ Chem Soc, xlvii); 'Crystallography of Tricupric Sulphate' (ibid); 'Orthoclase from Kilima-n-jaro, and Adrelavia, Switzerland' (Mineral Mag, vii); 'New Cornish Mineral' (Mineral Mag, vii); 'Zonenformal fur Orthogonate Systeme' (Zeitsch fur Krystall, xii); 'Crystalls for Baric Slag' (Journ Chem Soc, li); 'Use of Gnomonic Projection' (Mineral Mag, vii); 'Calcites, Egremont, Cumberland' (ibid, viii); 'Pyrargyrite and Proustite' (ibid, viii); 'Mineralogical Notes - Polybasite, Aikinite, Quartz, Cuprite, and Locality of Turnerite' (ibid); 'Stephanite and Kaolinite' (ibid, ix); 'Sanguinite (new mineral), Krennerite' (ibid); 'Ullmannite Tetartohedrism' (ibid); 'Student's Goniometer' (ibid); 'Orpiment' (ibid, x); 'Cornwall Danalite' (with G T Prior, ibid); (with W J Pope) 'Mittheil aus dem Krystall Laboratorium des City and Guilds of London Inst' (Zeitsch fur Krystall, xx); 'Spangolite from Cornwall' (Neues Jahresbr fur Min, ii); 'Quartz from North Carolina' (Amer Journ Sci, xlvi); 'Xanthocanite,' &c (Mineral Mag, x); 'Spangolite' (ibid, x); 'On a New Method of Measuring Crystals,' &c (Rept Brit Assoc, Nature, 1). |