628 PROCEEDINGS OP THE ACADEMY OF [Oct., 



Scotland for twenty-seven years, during fifteen of which he was 

 Director, he was appointed Director-General of the Geological 

 Survey of Great Britain and Ireland and Director of the Museum 

 of Practical Geology, Jermyn street, London, which positions he 

 held until his resignation from the Survey in 1901. He was 

 knighted in 1891. 



In 1879 he was selected to write the article on Geology for the 

 Encydopcedia Britannica, 9th ed. His Text-Booh of Geology, 

 generally recognized to be the best presentation of the subject in 

 any language, was issued in 1882, the second edition in 1885 and a 

 third edition in 1893. His most important piece of research 

 work, The Ancient Volcanoes of Great Britain, was published in 

 1897. 



The following were ordered to be printed : 



