424 



Journal of Agricultural Research 



Vol. X, No. 8 



Table XIX. — Data from Table XVII T rearranged to show relation of rate of rise to the 



hygroscopicity of the soils 



EXPERIMENT I (moisture CONTENT=o.s HYGROSCOPIC COEFFIOENT) 



Time. 



Hours 

 I 



2 



3 



4 



24 



48 



72 



96 



120 



144 



l68 



192 



216 



240 



Cm. 



6 



Cm. 

 6 



Cm. 



Cm. 



Cm- 



Cm. 



Cm. 



13 



17 



21 



23 



Si 



70 



82 



91 



99 



los 



III 



116 



121 



125 



Cm. 



Cm. 



Cm. 



Cm. 



3i 



Cm. 



26 



Cm. 



35 



Cm. 



Cm- 



Cm. 



EXPERIMENT II (moisture CONTENT=I.O HYGROSCOPIC COEFFiaENT) 



3 •■ 

 4- • 

 24- 

 48. 



12. 

 96. 

 120 

 144 

 168 

 192 

 216 

 240 



36 



EXPERIMENT m (moisture C0NTENT=I.S HYGROSCOPIC COEFFICIENT) 



72. 

 96. 

 120 

 144 

 168 

 192 



o No record. 



& The color of the soil prevented any observation of a further rise. 



RELATION OF RISE TO INITIAL MOISTNESS 



In general, the movement throughout the period of observation was 

 most rapid in the soils when in the moistest condition. To this generali- 

 zation soils A, C, and I form partial exceptions, and with all of these the 

 duplicates were very closely concordant; with C and I the rise was least 

 in the intermediate and greatest in the driest condition. With the 

 soils other than these three we find, on comparing the data from Experi- 

 ment II with those from Experiment I, that with the exception of soil E 

 the movement was more rapid in the drier condition. There thus 



