JUDGING DRY-FARM SOILS 79 
more on each acre if time and circumstances permit 
—and the results entered on a map of the farm. 
The uniformity of 
boring progresses. 
If gravel layers ex- ‘ 
ist, they will neces- 
sarily stop the prog- 
ress of the boring. 
Hardpans of any 
kind will also be re- 
vealed by such an 
examination. 
The climatic in- 
formation must be 
gathered from the 
local weather bureau 
and from older resi- 
dents of the section. 
The native vege- 
tation is always an 
excellent index of 
dry-farm possibil- 
ities. If a good 
stand of native 
grasses exists, there 
can scarcely be any 
the soil is observed as the 
Fig. 21. Soil augers. The subsoil of every 
dry-farm should be studied by means 
of soil augers. 
doubt abcut the ultimate success of dry-farming 
under proper cultural methods. A healthy crop of 
sagebrush is an almost absolutely certain indication 
