22 PROCEEDINGS OF THE ^VASHIXGTOX MEETING 



keen interest in the structural features of mining areas outside of his 

 own country is shown in his paper on the "Geological Literature of the 

 South African Eepublic," printed in the Journal of Geology. Within 

 a few months of his death he published articles on the Cananea Mining 

 District of Sonora, Mexico, and the Cobalt Mining District of Ontario. 



In strong contrast to these technical papers is his loyal and s}Tnpa- 

 thetic tribute to his old and dear friend, Clarence King, in the biograph- 

 ical memoir read before the Xational Academy of Sciences. 



As early as 1814 Mr. Emmons was made a Fellow of the Geological 

 Society of London, and at the time of his death was one of the oldest 

 members in this country. Throughout this long period he always kept 

 himself in touch with its publications, especially contributions which 

 treated of the geology of unexplored parts of the world. He joined the 

 American Institute of Mining Engineers in 18TT, took an active part in 

 its proceedings and discussions, and was elected three times as one of its 

 vice-presidents. He was one of the founders of the Geological Society 

 of America, and chosen its President in 1903, delivering, on retiring, a 

 notable presidential address on "The Theories of Ore Deposition His- 

 torically Considered." At the time of his residence in Denver, while in 

 charge of the geological work in Colorado for the LTnited States Geo- 

 logical Survey, he aided in the organization of the Colorado Scientific 

 Society, and was elected its first president in 1882. The society now 

 ranks among the most active scientific bodies in this country. In 1892 

 he was elected to membership in the Xational Academy of Sciences. 

 He was also a member of the American Academy of Arts and Sciences, 

 the American Philosophical Society, the Washington Academy of Sci- 

 ences, and the Geological Society of Washington, of which he also served 

 one term as president. He was an honorary member of the Societe 

 Helvetique des Sciences Xaturelles. 



The fifth session of the Congres Geologique Internationale met at 

 Washington in the summer of 18T1. Mr. Emmons ably filled the posi- 

 tion of General Secretary, which was in no sense a sinecure, requiring 

 months of arduous work, as a large share of the responsibility for the 

 success of the Congress fell upon his shoulders. The conditions for 

 such meetings in this country were essentially different from those in 

 such European capitals as London and Paris. Ever afterward he took 

 an active interest in similar congresses, and, attending several of them 

 as delegate from America, served as vice-president at St. Petersburg in 

 1897, Vienna in 1903, and Stockholm in 1910, taking part in many of 

 the more important geological discussions specially organized for the 

 different congresses. 



