94 Obituary—Dr. Arthur Vaughan. 
In 1905 he became Secretary of the British Association Committee 
for the investigation of life-zones in the British Carboniferous rocks, 
and drew up a series of important reports. Particular attention may 
be directed to those of Winnipeg (1909), Sheffield (1910), and 
Manchester (1915). In the Winnipeg report he correlated the 
Carboniferous Limestone (Avonian) succession in various parts of the 
British Isles, and threw much light on the phasal equivalents, while 
that at Manchester, his last piece of work, is concerned with the 
shifting of the western shore-line in England and Wales during the 
Avonian period. The Sheffield report (1910) correlates the British . 
and Belgian succession, and was the result of a visit paid to Belgium 
in the summer of 1909. Vaughan paid a second visit to Belgium in 
1912, this time in company with a party of British geologists, and 
had the satisfaction of completing his Belgian work in a paper 
published in the Geological Society’s journal last year. The importance 
of this work was quickly recognized by Belgian geologists, and he 
was elected a Foreign Member of the Geological Society of Belgium. 
He received the Wollaston Fund from the Geological Society in 1907 
and the Lyell Medal in 1910. 
In 1910 Vaughan moved to Oxford, having accepted a post as 
Lecturer on Geology in the University, and the charm of his 
personality and his marked ability as a teacher made him very 
popular with his students. While at Oxford his attention was 
particularly directed to questions bearing on the evolution of animal 
life, and breaking new ground he devoted much time to the study of 
fossil ungulates. He was also engaged on a textbook of paleontology 
written on somewhat novel lines, for the illustration of which 
Mr. Tutcher had prepared several hundred photographs. Although 
this is left unfinished, there is hope that it may prove possible to 
publish it. 
Though his lighter duties at Oxford caused some improvement in 
Vaughan’s health, it was still the cause of much anxiety to his 
friends. In 1914 he visited Australia with the British Association, 
and was able to satisfy himself that the remarkable Permo- 
Carboniferous strata were correctly correlated with the Artinskian 
of Russia, He hoped to have the opportunity of visiting Russia for 
the examination of these strata, and with his usual thoroughness 
occupied himself during the last years of his life with the study of 
Russian. 
_ Probably the characteristics which impressed themselves most on 
the many friends who mourn his early death were his geniality and 
loyalty, the courage with which he stuck to his work through long 
years of failing health, and the remarkable grip and clear-sighted 
logical analysis with which he tackled any problem. 
S. H. R. 
LIST OF PAPERS BY ARTHUR VAUGHAN. 
‘‘ Stress within a Sphere due to inequalities at its surface, with application to 
the Harth ’’: 1897, privately printed, Taylor & Francis. 
‘“* The Corrugation of the Earth’s Surface and Voleanic Phenomena’”’ : GEOL. 
MAG., Dec. IV, Vol. I, pp. 263-70, 1894. 
