part 1] AXNIYERSAHT ADDEESS OF THE PRESIDE:NT. Ixix 



in three weeks, brought to a high state o£ efficiency, and led to 

 the Western Front, where it saw some hard fighting in important 

 engagements. He was not long permitted to devote his energies 

 to combatant duty, but was recalled to the work for which he 

 had special qualifications, in the Arm}' Medical Service, Keleased 

 from this he returned to Stoke-on-Trent, after four years' absence^ 

 and resumed the issue of geological and palteontological papers, 

 which reached a total of over 80 in all, produced during a period 

 of 30 3^ears, four of which were spent in military service. He 

 was elected a Fellow of this Society in 1891, received an award 

 from the Lyell Geological Fund in 1902, the Lyell Medal in 1917, 

 and died on June 21st, 1920. 



JoHis" Udall. who died on October 17th, 1920, aged 79, was a 

 well-known personalit}^ among Midland geologists. For over 

 30 years he was the trusted and valued friend of Charles Lapworth,. 

 and his constant companion in the field. Born in London, he 

 passed his studentship at Peterborough Training College, and from 

 1875 to 1908 served under the Birmingham Education Board, 

 first as Head-Master at Kea-Street School, and subsequent!}'' at 

 Dudley-Road School, until his retirement in 1908. He entered 

 largely into the communal life of Birmingham, and, though not 

 contributing to their publications, was an active member of several 

 local scientific and literary societies. He was elected a Fellow of 

 our own Society in 1887. [W. G-.] 



Alexaj^der Gordon Mil^se Thomson, youngest son of James 

 Thomson, engineer, Dundee, was born at Landernau (Finistere), 

 France, in 1866, and educated in Dundee. During his school- 

 days he was interested in geology, and at College it became one of 

 his special subjects of study. In association with his brothers he 

 was actively engaged in business throughout his life ; but, as he took 

 no part in outdoor sports, he devoted his spare time to the study of 

 problems connected with the Old Red Sandstone. He found great 

 pleasure in examining the fine sections of this system in the 

 counties of Perth and Forfar, in the basin of the Moray Firth, in 

 the Pentland Hills, and in the tract extending from Muirkirk by 

 Lesmahagow to Lanark. 



His observations in the field led him to publish a volume on 

 * The Position of the Old Red Sandstone in the Geological Succes- 

 sion,' wherein he departed from the accepted views regarding the 



