Dr. Aubrey Strahan. 195 



Cambrian and pre-Cambriaii rocks, near Nuneaton, in order to make 

 the corrections on the map rendered necessary by the discoveries 

 then recently made by Professor Lap worth. Later on in the same 

 year the mines of a part of Derbyshire were examined for the second 

 edition of the Survey memoir on North Derbyshire. 



In the latter part of 1886 Mr. Strahan commenced the 6 inch 

 survey of the southern part of the Isle of Wight, and in 1887 he 

 continued the work into the Isle of Purbeck. In 1891, it having 

 been represented in the House of Commons by Sir Hussey Vivian 

 (afterwards Lord Swansea) that the geological maps of the South 

 Wales Coal-field were obsolete, the re-survey of that important area 

 was commenced by Strahan and carried on continuously to its com- 

 pletion, save for two brief interruptions, one to the Isle of Man in 

 1892 and the other in the Cumberland Coal-field in 1894. 



In 1886 Aubrey Strahan married Fanny Evelyn Margaret, 

 daughter of the late Edward H. Roscoe. 



In addition to his important work in the field as a Geological 

 Surveyor, Dr. Strahan has contributed upwards of thirty-five memoirs 

 to the publications of the Geological Survey between 1881 and 1915 

 (the titles of which appear at the end of this notice) ; but his 

 scientific activities extended far beyond his official duties. For 

 instance, he wrote an appendix to Major Conyngham's Pendulum 

 Observations in India, and published numerous papers in the Quarterly 

 Journal of the Geological Society, including two Presidential Addresses 

 (1913-14). Since 1881 he has written many papers for the Geological 

 Magazine (see list). In 1905 he prepared an important Report on the 

 Coal-fields of Lancashire, Cheshire, and North Wales for the Royal 

 Commission on Coal Supplies. 



In 1913 Dr. Strahan was present at the International Congress 

 at Toronto, and contributed the British Section to the Canadian 

 volumes on the 'World's Coal Resources', published last year. 

 As will be seen by the titles of his papers, his contributions to 

 geological science were many and varied, but those which relate to 

 the coal formations of Great Britain have a special importance in 

 connexion with the unexplored areas which lie outside the known 

 fields and await to be exploited in the future. 



In 1875 he was elected a Fellow of the Geological Society, and has 

 for many years served upon the Council. He filled the office of 

 Treasurer (1909-12) and of President (1912-14). He was elected to 

 the Royal Society in 1903 and has been on its Council (1909-10). 



As a Fellow of the Royal Geographical Society, he was not only on 

 the Council but acted as Chairman of the Research Department. He 

 is an Honorary Member of the Chester Society of Natural Science 

 and of the North of England Institute of Engineers. He 

 accompanied the Total Eclipse Expedition 'to Vadso in 1896, and 

 visited a section in the glacial deposits of Palaeozoic age, also the 

 raised beaches on the Yaranger Fiord, and described them both at the 

 Geological Society on his return. He served as President of Section C 

 of the British Association at Cambridge in 1904, and in 1909 

 attended the meeting at Winnipeg, taking the opportunity to visit 

 Vancouver. In 1910 he attended the International Geological 



