GREENOUGH, GEORGE BELLAS (17 S 5 ), Eng lish geologist, was born in London on the I8th of January 1778. He studied mineralogy at Freiburg under Werner, travelled in various parts of Europe and the British Isles, and worked at chemistry at the Royal Institution. He was elected F.R.S. in 1807, and was one of the founders of the Geological Society of London in 1807. He was the first chairman of that society, and was three times president. His famous Geological Map of England and Wales, in six sheets (1819; end ed. 1839) was to a large extent based on the original map of William Smith ; but much new information was embodied. He also prepared a Geological Map of India (1854) . He died at Naples on April 2, 1855