EXERCISE A-24. TO STUDY THE CAPILLARY MOVE- 

 MENT OF SOIL MOISTURE. 



Equipment: Four lamp chimneys; cheesecloth; twine; 

 tray 1"X4''X12" ; rack to support chimneys; samples of 

 clay, loam, and sandy soils; foot rule. 



Method : Tie a piece of cloth over the small end of each 

 chimney. Number and fill them as follows: (1) sand, (2) 

 loam, (3) clay, (4) half sand and half clay. Place the chim- 

 neys in the rack and keep the pan filled with water. Meas- 

 ure and record the height of the water in each, after a half 

 hour, one hour, and every twenty-four hours for a week. 



Record your data as follows: 



In which kind of soil did the water rise fastest at first? 

 In which did it finally stand highest? 

 Does capillary moisture always move directly upward? 

 Discussion: Water rises through the soil in the same 

 way that oil rises in a lamp wick. Throughout the growing 



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