we 
ii 
face not too great for trees to be benefited by it. The upland areas 
comprise the main part of the region. On them the tree roots never 
reach water, which is often 100 to 200 feet below the surface. 
A sandhill region has more in common with the valleys than the 
uplands, even when its situation is relatively high. Few people 
lElwood| Pla 
eee 
A 
Me Cook 
is eee 
| 
SmithCenter 
ial ~ 
 NGramfield| ——~ 
= i ° 7 
oy ——— Senin cfu 
ae O GAN GOV 
| ShoronSprs| Russel Sprs | - =< 
os 
| 
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SY 
N 
Pe eWARDS | L 
Ddage Flere 
sl 
F SantaFe\ fontezuma: 
o’\ ) 
Fig. 1.—Western Kansas and adjacent regions. 
realize how much moisture a sandhill soil contains. There is prac- 
tically no surface run-off; all the water which falls sinks into the 
ground. ‘The soil never bakes, but is always in a receptive condition. 
The evaporation is less than from a clay soil, and a larger percentage 
of the moisture is available for plant use. The cottonwood and the 
[Cir. 161.] 
