CAPILIAEY MOVEMENT OF SOIL MOISTURE. 0± 



The value- of y : are calculated from this formula and tabulated in 



e 37. 

 The differences b tween 2/ x and y are also tabulated as y,_. y,= 



V--V- 



.) 2 .3 -4 .5 



7 JS .3 /.0 '■/ '.2 13 !.£■ /.5 1.0 1.7 13. 



DC3YS (x) 

 S*ig. 0. — Method of developing formulae for movement 01 : . a game 31. 



The va . log y 2; log ^ SB, log x. and y are plotted agai 



each other as n m figure 9 J., but none of these curves is a 



This suggests the existence of a constant term, an 

 l1 er of constanl - ere tried until it vras found that the curve be- 

 tween log | :;_ — •''< < and log a? is si . tight line. The curve above 12 

 days or 12a? then is log ( y_ — 5.5 >=log s-f-w log a?. 



