Aug. 20, 191 7 



Relation of Soil Water Movement 



4^3 



Table XIII. — Change in the moistened layer of the ratio of the water content to the hygro- 

 scopic coefficient and the proportion of the total distance of penetration covered during 

 successive intervals following the application of X inch of water to the surf ace of the 

 soil columns — Continued 



SOIL I (hygroscopic COEFKICIENT=7.i) 



Interval. 



Fall in ratio of water content 

 to hydroscopic coefficient. 



Experi- 

 ment I. 



Experi- 

 ment II. 



Experi- 

 ment III. 



Proportion of total distance of 



penetration covered during 



interval. 



Experi- 

 ment I. 



Experi- 

 ment II. 



Experi- 

 ment III. 



First hour 



First to third hour 



Third to twenty-fourth hour. 



Second day 



Third day 



Fourth day 



Fifth day 



o. 2 



•4 



0-5 

 .6 



0.4 



•5 



Per ct. 



70.9 



4.8 



13-3 

 7.8 



3-2 



Per ct. 



54-9 

 10.5 

 18.6 

 6.9 

 3-8 

 I. I 

 4.2 



Per ct. 



52.0 



II. 8 



22.5 



5-2 



4-3 



2.6 



1.6 



SOIL J (hygroscopic C0EFFICIENT=5.6) 



First hour 



First to third hour 



Third to twenty-fourth hour. 



Second day 



Third day 



Fourth day 



Fifth day 



56.0 

 5-8 



21.4 

 4.8 

 4. I 

 4.8 

 3- I 



9.9 



18.9 



8. I 



5-8 



5-4 

 3-7 



50.6 



10.5 



24. 6 



6.7 



3-6 



SOIL K (hygroscopic C0EFFICIENT=3.4) 



First hour 



First to third hour 



Third to twenty-fourth hoiu". 



Second day 



Third day 



Fourth day 



Fifth day 



48.8 



14. 2 



20. 4 



6.8 



5- I 

 2.7 



soil l (hygroscopic coefficient =3. 4) 



First hour 



First to third hour 



Third to twenty-fourth hour . 



Second day 



Third day 



Fourth day 



Fifth day 



0.6 



•7 



52-9 

 6.5 



26.8 

 6.0 

 2.6 



3- I 

 2. I 



42. S 

 13- 2 

 24. 2 



7-4 

 1.6 

 7.8 

 3-3 



53-7 

 IS- 2 



31- I 



