132 



Journal of Agricultural Research 



Vol. X, No. 3 



With a few exceptions, every initial percentage in the figure indicates 

 that for each successive 24-hour period after the first the moisture in 

 the middle and top sections increased, while that of the section in con- 

 tact with the moisture increased little during 120 hours. Although the 

 moisture in the top sections was considerably less than the others after 

 the first 24 hours, at the end of 120 hours there was a tendency for all 

 three sections to contain the same percentage of moisture. 



Soil having the lowest initial percentage of moisture showed the great- 

 est variation between the section farthest from the source of moisture 



Percentage of moialure in soil offer capillary rise for yofious periods 

 i^ Hn *8 Hra ___ re^Hrj 36^Hrs. _ UO^Hrj. 



Vsecfion farf heif from source of wafer ^ Middle Section ^ Section next U vf/atee 



Fig. 14.— Diagram showing the effect of the initial percentage of moisture and time on the upward capil- 

 lary movement of water. • 



and that in contact wth the water after 24 hours, while the reverse is 

 shown after 120 hours. 



The irregularities noticed throughout the figure are thought to be due 

 to difi"erences in compacting the soils in the tubes, great difficulty being 

 experienced in putting the same dry weight of soils in the same space of 

 the tubes. Despite experimental error, the data seem worthy of pre- 

 sentation. 



Effect on Downward Movement of Moisture 



In order to obserx'^e the downward movement of moisture in soil of dif- 

 ferent initial percentages, tubes of Greenville loam made up to 2 >^, 5, 10, 

 1 5, and 20 per cent of moisture, respectively, exactly as in the last experi- 

 ment, were used. The v»ater in this case, however, was applied to the 



