2 BULLETIN 30, U. S. DEPARTMENT OF AGRICULTURE. 
reported in this bulletin were begun during that period, but the work 
had not progressed far enough in 1909 to warrant the publication of 
any conclusions. Now, however, considerable definite information 
is at hand, which is presented and discussed herein. 
DESCRIPTION OF THE SUBSTATION. 
It is believed that the results obtained at Nephi are applicable to 
only a portion of the Great Basin area. In many sections of the 
Great Basin the rainfall is so limited that dry farming as it is now 
understood is quite impossible. There are many thousands of acres 
Fig. 1.—View of a portion of the Juab Valley, Utah, looking east along the Levan Ridge toward the 
Wasatch Range. The substation farm occupies the foreground. Photographed April 23, 1912. 
in this area, however, where the results obtained at the Nephi sub- 
station are applicable. A comparison of the climate of any section 
with that of Nephi will show whether or not it is safe to apply them. 
In making such a comparison the exact location, the amount and 
distribution of the rainfall, and other climatological factors should 
be considered in detail before any conclusions are drawn. In order 
to allow such a comparison, a detailed description of the Nephi sub- 
station is here given. 
LOCATION. 
The Nephi substation is located in Juab Valley, in the eastern part 
of Juab County, Utah, almost in the center of the State. This valley 
