EXPERIMENT STATION BULLETINS. 



547 



tained and calrulated data for the volume of ga.s expelled from the dry 

 soils. Table 10 contains Ihe identical data for the moist soils. These 

 tables are accomininied by figures KJ and 14 resj)ecHvely. Table 11 I'epre- 

 sents Ihe amount of pressure exerted by the moist soils only. The data 

 of this table is shown on figure 15. 



FIG. 14. CURVE SHOWING THE EXPULSION OF AIR FROM ONE HALF CUBIC FOOT 

 OF MOIST SOIL AT DIFFERENT TEMPERATURES. 



