Born in 1825, died in 1895; educated at Charing Cross
Hospital, London; assistant surgeon a naval ship in 1846-50;
professor at the Royal School of Mines and the Royal
Institute; lord rector of Aberdeen in 1874; lecturer at
Cambridge in 1883; president of the Royal Society in 1883;
published, among other works, "Man's Place in Nature" in
1868, "Lay Sermons" in 1870; "Critiques and Addresses" in
1873, "Evolution and Ethics" in 1893.