PRACTICE XIII (Continued) 



Soils 













1 



2 



1 



2 



1 



2 



I 



2 



Weight of air-dry soil 



















Per cent of hygroscopic water .... 



















Weight of water-free soil 



















Weight of pycnometer filled with water 



















Weight of pycnometer filled with water 

 4- water-free soil 



















Weight of pycnometer and soil 4- water, 

 filled after boiling 

















Weight of water displaced 



















Specific gravity . 







1 





i 



i 

 1 



HYGROSCOPIC AVATER 



Soils 











1 



2 



1 



2 1. 



2 



1 



2 



Weight of air-dry soil . . . . . . 



















Weight of water-free soil 





■ 















Loss in weight = hygroscopic wa:ter . . 



















Per cent of hygroscopic water ..... 



















29 



