THE SOIL. 



PRODUCTION REDUCED BY UNDRAINED SPOTS. 



water through the soil the roots of plants may develop 

 readily in it though the soil is thoroughly saturated. 

 It is the water-logged condition which is unfavorable 

 to crops. 



Water Holding Capacity of Soils. From this it 

 will be seen that crops must largely rely on the capil- 

 lary moisture of the soil for their water supply. The 

 amount of capillary water which soils are able to hold 

 and the protection of this water from loss by evapo- 



APPARATUS TO TEST THE CAPACITY OF SOILS TO HOLD WATER. 



