1919] 



Pendleton : A Study of Soil Types 



5S9 



Table 3 — Mechanical Analyses, Hilgard Elutriator Method 



Allamont Clay Loam 



Table 4 — Mechanical Analyses, Hilgard Elutriator Method 

 San Joaquin Sandy Loam 



Separates 



A 



Diameter 

 mm. 



.01 

 .01 -.016 



Name 

 Clay 



Fine silt 

 Medium 



silt .016-.025 



.025-.036 



Coarse silt .036-047 



Velocity, 

 mm. , 

 per 

 second 



0.25 

 0.25 



Samples 



A 



.047-.072 



Fine sand 



Medium 

 sand 



.072- 

 .12 - 



.16 - 



.12 



.16 



0.5 

 1 



2 



4 



8 

 16 



10- A 



% 



11.14 

 20.24 



1.41 

 6.54 

 8.36 

 9.50 

 10.66 

 10.30 



ll-A 



% 



15.46 

 31.88 



2.73 



9.11 



10.23 



8.41 



7.47 

 5.97 



12-A 



% 



8.99 

 26.57 



2.31 



1.33 



1.19 



10.14 



10.72 



10.88 



.30 32 14.69 6.91 11.75 



Coarse sand .30 -.50 64 7.11 1.32 3.54 



Total weight of separates, gm. 20.02' 20.44 19.99 



Weight of original sample, gm. 19.80 19.51 19.72 



Grits, % 0.5-2.0 mm. 16.70 23.54 8.84 



Hygroscopic moisture, % 0.98 2.48 1.38 



Note. — All weighings made on the water free basis. 



13-A 



% 



10.75 

 24.04 



4.64 



9.86 



9.59 



10.05 



10.92 



16.14 



1.96 

 2.12 

 20.10 

 19.76 

 8.10 

 L.22 



17-A 



% 



10.53 

 16.20 



1.81 

 5.89 

 5.82 

 8.46 

 12.04 

 13.43 



19.21 

 6.60 

 20.38 

 L9.85 

 23.12 

 0.75 



18- A 



% 



8.72 

 18.56 



3.06 

 6.93 

 6.90 



S.45 



9.72 



10.56 



1(5.51) 

 10.50 

 20.06 

 19.86 

 32.00 

 0.70 



21-A 



% 



8.35 

 14.73 



3.54 

 6.98 

 7.10 

 7.67 

 12.86 

 13.53 



13.05 

 12.14 

 20.33 

 19.85 

 28.50 

 0.75 



2 6- A 



% 



16.64 



20.78 



3.83 

 9.24 



7.09 

 8.89 

 5.77 

 3.85 



0.86 

 23.04 

 20.14 

 19.69 

 36.00 



1.57 



