John Hall Gladstone. Photogravure by Meisenbach Riffarth & Co., Leipzig, 1904
Professor (Dr) John Hall Gladstone
Member of the London School Board, elected for Chelsea 1873, 1876 1879 1882 1885 1888 1891. 7 March 1827 – 6 October 1902) was a British chemist. He served as President of the Physical Society between 1874 and 1876 and during 1877–1879 was President of the Chemical Society. Apart from chemistry, where one of his most notable publications was on bromination of rubber, he undertook pioneering work in optics and spectroscopy. In 1880 he became a member of the Worshipful Company of Wheelwrights
Article in Wikipedia [1]. Royal Institution page [2] and Grace's Guide page [3].