PRACTICE XXIV (Continued) 



Soils 



tf 



Sand or Sandy 

 Loam 



Gray Silt or Gray 

 Silt Loam 



Brown Silt Loam 





L^ 



CM 



L 



C 



L 



C 



Time required for percolation to 

 besrin 









■ 











Cubic centimeters of water per- 



1 

 2 















colating through in 30 minutes 















Average of trials 









• 











1 L = Loose ; C = Compact. 



Fig. 7. Percolation Apparatus (modified) (after McCall) 

 A, intake tube ; B, overflow tube 



51 



