Explorations West of the 100th Meridian. 291 
photographic views secured from the Grand Cajion of the Colo- 
rado, as well as from Utah, by Mr. Wm. Bell, a skilled photo- 
grapher of Philadelphia; characteristic sets of views selected 
from these are now preparing, under orders from the War De- 
partment, for exhibition at the Vienna Exposition during the 
coming summer. 
In the line of natural history, Dr. H. C. Yarrow and his 
assistant, Mr. H. W. Henshaw, made valuable collections from 
the flora and fauna of the territory entered, including not less 
than five hundred bird-skins from Utah, which have been 
received in Washington in excellent preservation. The geolo- 
gists of the expedition, Messrs. G. K. Gilbert and EK, E. 
Howell, besides the strictly special work of their profession, 
dialects. Lieuts. R. S. Hoxie and W. L. Marshall, of the 
engineers, aided Lieut. Wheeler in the executive administration 
of the expedition, besides giving somewhat attention to astro- 
nomical and topographical subjects. Lieuts. W. A. Dinwiddie 
and W. Mott were in command of the cavalry and infantry 
mineral croppings may reasonably be expected, the discovery 
of new routes of travel and transportation, and favorable posi- 
hag for the establishment of lolitas posts, the collection of 
1 1 
tion, and other investigations of equal importance in the 
development of a new country and the improvement of regions 
ly settled. 
