I 



Arnold Hague. 75 



Hague, who had returned to the United States, was appointed 

 a geologist in the U. S. Geological Survey July 8, 1879, but 

 did not take the oath of office until April 10 of the following 

 year. 



Under the new organization he was sent to Nevada to study 

 the geology of the Eureka district. His report, published in 

 1893, is Monograph 22 of the U. S. Geological Survey. In 

 1888 he was made geologist of the Yellowstone National Park. 

 With the aid of a number of able assistants and specialists the 

 general study of the Yellowstone National Park was completed 

 some years ago and the results published as Monograph 32, 

 part 2, leaving part 1 to be prepared as a final report by Mr. 

 Hague. It is to include a special study of the geysers which 

 engaged his attention for a number of years. This work, his 

 last and greatest, Hague leaves practically complete. 



Mr. Hague in addition to his larger reports has contributed 

 papers to a number of scientific periodicals, especially to this 

 Journal. Among these may be mentioned the " Early Terti- 

 ary Volcanoes of the Absaroka Kange," delivered as his presi- 

 dential address before the Geological Society of Washington 

 and " The origin of the thermal waters in the Yellowstone 

 National Park," his presidential address before the Geological 

 Society of America. His bibliography of scientific papers 

 includes 39 titles, the last of which is the memoir to his life- 

 long and devoted friend, S. F. Emmons, published in 1913 by 

 the National Academy of Sciences. 



Hague was a fellow of the Geological Society of America of 

 which he was president in 1910, of the Geological Society of 

 London, and a member of numerous other scientific societies. 

 In 1885 he was elected to the National Academy of Sciences, 

 of which he was an active member and officer. As a member 

 of the Commission appointed at the request of the U. S. Gov- 

 ernment by the National Academy of Sciences, he had much 

 to do with the plan for our National Forest reserves. 



Columbia University honored him with the degree Sc.D. 

 in 1901, and in 1906 he received the degree of LL.D. of the 

 University of Aberdeen. He was vice-president of the Inter- 

 national Geological Congress at Paris 1900, Stockholm 1910, 

 and Toronto 1913. Nov. 14, 1893, he married Mary Bruce 

 Howe, of New York. 



Mr. Hague was not a ready writer nor voluminous, but 

 exact. He aimed more to write welland truly than much. 

 He was a charming host, and there are but few scientific men 

 in America who have had so wide a circle of devoted friends 

 as Arnold Hague. j. s. dillek. 



U. S. Geological Society, 



Washington, D. C, May 26, 1917. 



