AMERICAN GEOLOGY — SURVEYS UNDER HAYDEK. 



595 



Work of Hayden 

 Survey in Montana 

 and the Yellowstone 

 Park, 1871. 



Cretaceous and Tertiary formations of the West, the latter, popularly 

 known as wi Cope's Primer," a pudgy volume of 1,009 pages and 13-4 

 full-page plates. With this year, too, began Jackson's work, which 

 resulted in the production of what were at the time the finest land- 

 scape photographs ever taken, and which excited the wonder and admi- 

 ration of geologists the world over. 



In 1871, with an appropriation of |4l >,0I M >. held operations were t runs- 

 ferred to Montana and portions of adjacent territories, including what 

 is now the Yellowstone Park. To the party of the year previous was 



added A n - 



ton Schon- 



born, to- 

 pographer; G. N. Allen, bot- 

 anist, and Dr. A. C. Peale, 

 mineralogist. The route lay 

 fromOgden. Utah, along the 

 shore of Salt Lake to Wil- 

 lard City; thence through 

 the Wasatch range to Cash 

 Valley, and up the valley 

 to the divide between the 

 Salt Lake and Snake River 

 basins. From this point they 

 descended Marsh Creek to 

 the Snake River basin and 

 Fort Hall. Following the 

 stag<> route to Virginia Junc- 

 tion, they crossed Black Tail 

 Deer ("reek near its source; 

 thence down the Stinking 

 Water to Virginia City: 

 then, crossing the divide 

 eastward to the Madison 

 River, they descended the 

 valley about 30 miles and 



crossed over the other divide to Fort Ellis, at the head of the Gallatin 

 River. From Fort Ellis the}' passed again eastward over the divide 

 between the Yellowstone and the Missouri to Bottler's ranch, where 

 was established a permanent camp. A portion of the party then pro- 

 ceeded up the Yellowstone and entered the park area, surveying the 

 mammoth hot springs on Gardners River, the Grand Canyon of the 

 Yellowstone, the upper and lower geyser basins, and the lake. On 

 returning to Bottler's ranch in August, they passed down the Yellow- 

 stone to Shields River and Fort Ellis, and thence down the Gallatin to 

 Three Forks, up the Jefferson to the Beaver Head Branch and to 



Fig. 98. — Edward Drinker Cope with skull of Loxolopho- 

 don cornutus. 



