F. GEOGRAPHY. 131 



several years ago by Dr. Hayden, under the direction of the 

 Interior Department, a party was fitted out by him at Chey- 

 enne, about the middle of July, which included a scientific 

 corps often persons, together with nine other employes. Pro- 

 vided with proper authority from the War Department to 

 obtain assistance in the way of supplies and transportation, 

 it left the point mentioned about the 6th of August, and as 

 the work of the previous year had been southward along the 

 eastern flanks of the Rocky Mountains to Santa Fe, the pres- 

 ent expedition was arranged to move northward along the 

 same range, so as to obtain as extensive a section of the moun- 

 tains as possible. 



Leaving Cheyenne as stated, the party proceeded along 

 the eastern base of the Laramie Range, by way of Chug Wa- 

 ter Creek, Laramie Peak, North Platte, Sweet Water, and 

 South Pass, to the Wind River Mountains; then down the 

 Big and Little Sandy creeks to Green River, and thence to 

 Fort Bridger. Here they remained for about twenty days, 

 making explorations in the vicinity. From Fort Bridger they 

 then went southward to Henry's Fork, and ascending its val- 

 ley to Green River and Brown's Hole, returned up the river 

 to the Union Pacific Railroad, and thence by way of Bridg- 

 ets Pass, Medicine Bow Mountain, and Laramie Plains, and 

 through the Laramie Hills, by way of Cheyenne Pass, back 

 to the original point of departure, which was reached about 

 the 1st of November. Extensive collections were made in 

 all branches of natural history and geology, and numerous 

 sections, photographic views, sketches, and notes taken, from 

 which to prepare the geological history of the country. It 

 is understood that Dr. Hayden's report is well advanced, and 

 will probably be printed in the course of a few months. 



The expedition of Professor Marsh, although a private one, 

 and instituted especially in the interest of the museum of 

 Yale College, was also of great magnitude, and thoroughly 

 equipped for accomplishing its desired object. His party con- 

 sisted of twelve companions, principally students or recent 

 graduates of Yale, and left New Haven on the last of June, 

 proceeding directly to Fort M'Pherson, on the line of the 

 Union Pacific Railroad. From Fort M'Pherson, escorted by 

 a company of the Fifth Cavalry, under Lieutenant Riley, an 

 exploration was first made along the Loup Fork and Niobra- 



