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The geological work was under the charge of W. H# Holmes, A* C. 
Peale, and Orestes 3t* John, and the paleontological work 
under Dr. 0. A. White, Mr, Holmes made a general survey of 
the park, while Peale, assisted by J. B* Mushbaok, was occupied 
in making detail studies of the geyser and hot-spring localities 
( Page 603) 
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rf Tha two volumes mentioned are almost monographic 
as far as the hot springs and geysers are concerned, and are 
rendered unusually attractive for their time by the sketches 
and panoramas of Holmes. Peale gave a detailed description 
of all the springs and geysers of any importance found in the 
park, describing and tabulating over 2,000 of the former and 
71 of the geysers. Holmes ’s report was accompanied by some 
brief petrographic descriptions by Capt. 0. E, Button.’ 1 
(Page 603. ) 
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