F. GEOGRAPHY. 299 



country. He accordingly turned his attention to Colorado, 

 and made some explorations in the direction of Grand River. 

 In 1868 he again took the field, and proceeded first to the 

 Middle Park, and thence down the Grand River to the head 

 of Cedar Canon, then across the Park Range by Gore's Pass, 

 and by October was encamped on the White River, about 

 one hundred and twenty miles above its mouth. Here he 

 built cabins and established winter-quarters, and devoted 

 the winter season of 1868-69 to excursions southward to the 

 Grand, down the White to the Green River, northward to 

 the Yarnpa, and around the Uinta Mountains. 



Every season since then the Professor has been engaged 

 in continuing his work, until what was commenced simply 

 as an incidental summer's trip became an elaborate survey 

 of the geography, geology, ethnography, and natural history 

 of a vast extent of territory. 



At the outset of his enterprise Professor Powell carried 

 on his work without any aid from the general government 

 beyond some facilities in the way of obtaining army rations. 

 Subsequently, however, appropriations were made by Con- 

 gress to a limited extent, and his survey was placed first 

 under the War Department, then under that of the Interior, 

 then under the Smithsonian Institution, and finally back 

 again under the Interior Department, to which branch of 

 the service it now belongs. 



As in other government expeditions of later date, all 

 branches of research have been well attended to. In the 

 later years Professor Powell's labors have been carried on 

 with the utmost precision, a base-line having been correctly 

 measured, and a regular trigonometrical survey conducted. 

 A large part of the canon region of Colorado has been al- 

 ready mapped out by him, and its remarkable features well 

 illustrated. 



We have now to chronicle the appearance from the gov- 

 ernment press of the first volume of the final report of Pro- 

 fessor Powell in the form of a handsomely printed quarto, 

 with numerous illustrations. This volume is composed of 

 three parts. First, the history of the exploration of the 

 canons of the Colorado, from Green River City to the canon 

 of Lodore, and from Echo Park to the mouth of the Little 

 Colorado and the Grand Canon of Colorado, with a special 



