(oti) 



EXERCISE 21 (Continued) 

 Water Holding Power of Soils 



QUESTIONS 



1. When a soil is saturated does it contain both free water and capillary 



water? Give reasons for your answer, 



2. What per cent of water was found in each of the soils Avhen saturated? 



3. What relation does this proportion bear to the pore space of the soil? 



4. What did you observe concerning the expansion of a muck soil when wet? 



What does this show concerning the depths at which tile drains should 

 be placed? 



