ff 
have 
the Rocky M 
1883.] . Recent Literature. 517 
RECENT LITERATURE. 
position “ by being caught there when the river was a thousand 
feet higher than it is now,” he goes on to say: “ There are 
ed and sharp edges. These prove incontestibly the former 
Standeur of the river, and exist to a height of 2000 feet or more 
above the present river, and their sharp and well-defined edges 
Would seem to prove their newness in the scale of time.” 
The Salmon river region needs explanation more, perhaps, than 
ever explored it. In investigating the permanent region of 
ti fhe nature of this large district. Lieut. Symonds calls atten- 
on to our almost entire ignorance of this region, and what he 
. -» Say of the river must be new to our readers as it is to the re- 
sna The Upper Snake river, as is well known, combines fea- 
iss of rare geological and scenic interest. 
a Moths the vicinity of the Great Salt Lake the (Snake) river takes 
ich | vcstetly course, flowin through a tremendous cañon in 
Which are 
1 
eo md 7 be 
ility to steamboat transportation. Made by direction of the commanding 
corps of the Department of the Columbia. By Lieut. THomas W. SYMONDS, 
Wan Engineers, U.S. A., Chief Engineer of the Department of the Columbia. 
33- Maps. 
