MEMORIAL OF ARNOLD HAGUE 43 



No field-work was undertaken by Hague and his assistant, Iddings, 

 during tlie two following years^ 1881, 1882, but a microscopical study of 

 the volcanic rocks collected by King, Hague, and Emmons from the Pa- 

 cific Coast volcanoes, and a further study of the igneous rocks of the 

 Great Basin of Utah and Nevada, in the collection of the Fortieth Paral- 

 lel, were made by Iddings, and joint papers on the results were published 

 by Hague and his assistant. In like manner a microscopical study of the 

 collection of rocks used by Dr. George F. Becker in preparing his mono- 

 graph on the Comstock Lode was made, and a joint paper based on the 

 results was published by Hague and Iddings as Bulletin 17 of the United 

 States Geological Survey. A joint paper was also prepared on volcanic 

 rocks from Salvador, Central America, which had been collected by W. A. 

 Goodyear, a classmate of Hague at Yale. 



In 1883 Hague wsiS appointed geologist in charge of the Survey of the 

 Yellowstone National Park and vicinity, and began field-work in August 

 of that year with a large party of assistants, including three assistant 

 geologists — W. H. Weed, G. M. Wright, and J. P. Iddings; a physicist, 

 William Hallock; a chemist, F. A. Gooch; a professional photograplier, 

 W. H. Jackson, and a disbursing clerk, C. D. Davis. The completion of 

 the Northern Pacific Railroad later in the summer attracted general 

 attention to the region and added to the interest taken in the natural 

 phenomena for which the park has become famous; for besides the geo- 

 logical features, which were the object of the survey, the park was to be 

 converted into a national pleasure resort for those interested in geyse::s, 

 hot springs, and natural scenery of a remarkable character. It was to be 

 placed under guard, as a huge game preserve, and was subsequently set 

 aside as a forest reserve and a protected reservoir for the headwaters of 

 the two great rivers — the Yellowstone-Missouri and the Snake, or Sho- 

 shone. In the prosecution and advancement of these various phases of 

 development ol the Yellov^stone National Park, Hague took an active 

 and prominent part, urging their importance on the government authori- 

 ties in Washington and advising as to the proper administration of the 

 laws and regulations whereby the various features of the park could best 

 be preserved and its functions as pleasure resort, game and forest reserve 

 could best be maintained. He was an ardent advocate of the preservation 

 of the striking features of the region in their natural state and for plac- 

 ing hotels and other buildings where they would not mar the attractive- 

 ness of the localities to which they were tributary. He was a vigorous 

 opponent of the attempt to introduce a railroad in the national park. 



In the survey of the region he was especially interested in the study of 

 the geysers and hot s})rings. He maintained a general oversight of the 



