1 30 Thomas Sergeant Hall. [vli.°xxxii. 



work, specializing on the paloeontological side of his subject. 

 In 1891 he published his first paper on graptolites, an obscure 

 group in the elucidation of which he did valuable work, and of 

 which he came to be regarded as the one authority in Australia. 

 Though obscure, the group is an important one. because certain 

 species have definite relationships to the gold-bearing rocks 

 of the Bendigo and Castlemaine district, and his most important 

 paper is probably that on " The Geology of Castlemaine, with 

 Subdivisions of Part of the Lower Silurian Rocks of Victoria. 

 &c." published by the Royal Society of Victoria in 1894. The 

 last paper that he published was entitled " Victorian Graptolites, 

 Part IV.." which was read in July, 1014. It was in recognition 

 of his work on graptolites that in 1901 the Geological Society 

 of London honoured him with the award of " The Balance of 

 the Murchison Fund." In the Proceedings of the Society the 

 following appears : — " The balance of the proceeds of the 

 Murchison Geological Fund is awarded to Mr. Thomas Sergeant 

 Hall in recognition of the value of his researches amongst the 

 graptolites and other invertebrate fossils of Australia, and to 

 aid him in the furthei study of the palaeontology of the Southern 

 Hemisphere." 



In conjunction with Dr. Pritchard, he worked for many 

 '•s on the Tertiary deposits of Victoria. Jointly they 

 published some seven papers in the Royal Society, one of the 

 most important of which, read in October, 1902, is entitled 

 "A Suggested Nomenclature for the Marine Tertiary Deposits 

 of Soul linn Australia," in which they suggested distinctive local 

 names for the various subdivisions names which have been 

 generally adopted. 



No1 only did Dr. Hall enter with zest into teaching and 

 research work, but he gave of his time ungrudgingly to assisl 

 in the organization of science. He bad joined t he Royal Society 

 in 1890 : in E896 he became a member of the council, and from 

 that day until jusl a year ago he did yeoman service for it. 

 From [897 99 he was librarian : from [899 E914 he was honorary 

 etary, editing admirably the publications, taking, in fact, 

 the leading part in all work connected with it. and contributing 

 to it- Proceedings some twenty-nine papers. In [914 he was 

 elected president, and again in 1915, bu1 in March ol the lattei 

 year he was obliged to -end an apology for non-attendance, 

 and thereafter his failing health prevented him from taking 

 the 1 hair. 



[0 the work of the Australasian Association for the Advance- 

 n< e he devoted mu< h time and energy. I te edited 



volume of P I the Melbourne meetings in 1900 



and ioi ;. acted as local ecretary foi Victoria from [907 

 onwards, and wa ill of the geology se< tion at the Hobarl 



