114 BULLETIN 1059, TJ. S. DEPARTMENT OF AGRICULTURE. 



bold the vapor under high pressure. The effect of this is seen in 

 diagram 7. where some of the typical results are illustrated. In 

 Table 5 is shown only the absorption for four periods, eliminating 

 this period of general loss. Except this period, the exposure in the 



cellar has been at temperatures between 0° and 10° C, which, it 

 will be noted, are lower than have previously been employed. 



For several of the soil types duplicates were run. The results, 

 however, are so nearly identical in each pair that only the averages 

 need be given. 



Tabi e 5. -Absorption of water vapor by Nebraska fine sand, and modifications thereof. 



[Basis 100 grams dry matter in 2J-inch aluminum can.] 



Xuni- 



ol 



sam- 

 ples. 



Description of sample. 



Absorption al en 1 of— 



> 

 days. 



I if) per cent fine sand, unwashed 



100 per cent fine sand, unwashed half-size » 



100 per cent fine sand, washed 2 



90 per cent fine sand, 10 per cent very fine sand 

 per cent fine sand, 10 per cent silt and clav 



80 percent fine, lOpercent very fine, 10 per cent silt and clav 

 per cent fine sand. 10 per cent fine limestone soil 

 "> per cent fine sand, 10 per cent calcium carbonate 

 >er cent fine washed sand, 1 per cent K.XO, 3 



98 per cent fine washed sand, 2 per cent K.V >■■ 



"' percenl fine washed sand, 3 per cent K\'<>> 



98 per cent fine sand, 2 per cent ground decayed wood'. 



yb per cent fine sand, 4 per cent ground decayed wood 



/'</■ i( at. 

 0.56 

 .lis 

 . .">7 

 .51 

 ,'.i7 

 .93 

 .72 

 .71 



• :' 



. 73 



. ^7 



1.15 



1.10 



L.07 



. 85 

 .89 



1.07 



1 . 33 



61 

 1.33 

 1.37 



1 . 55 



3.01 



1.13 

 1.64 



i w'lSTIdt?' 1 ' 1 l )f volu 7 e 1 atl ! ,1 "l" h on rate of absorption. 

 \\ ashed with 5 volumes of distilled wa I 



otassium nitrate applied in solution, an 1 water ■ - iporatej | irl Lng the test 



sa 

 days. 





1.08 



1.58 



1.72 

 1.27 

 2 05 



l 91 



3 



