I'kimu'al ^)R^■-FAR^^X(; Ri-.cioxs 



515 



soil sam]iles fnnn the Snowflake Drv-farm. wliich are typical of the 

 valley soils of this rciiion, arc reported in Tables \' and \'l. The 

 mechanical analysis shows a high percentage nf clay and silt ni the 

 fourth ft.ot. and a high percentag^e of very fine sand and low ])er- 

 centage ui clay in the eighth foot. The soil is a fine sandy loam 

 containing sufificient clay to insure lasting fertility, and enough silt 

 and very fine sand to jjrevent liaking. Soil of this type is easily 

 tilled and allows the economical use of moisture. The chemical 

 analysis indicates a fairly rich soil, free from injuri(nis amounts of 

 alkali. 



Fig. 8. — Ranch in opm iiark in Nortlicin Arizona forest, 6500 feet elevation. 



