June, 1942] 



Agricultural Experlment Station 



23 



Figure 4 shows the actual and calculated (saturated) moisture 

 carrying capacity of the air in plot house and poultry pen 16 for a 

 period of seventeen months. General conversion factors were used in 

 calculating moisture carrying capacity of air at the various tempera- 

 tures. It will be noted that the actual moisture carried by the air 

 was considerably less than its theoretical moisture carrying capacity. 

 This was especially true, as noted by the cross-hatched section of the 

 chart, from May to October. During the colder months the air mois- 

 ture carrying capacity is reduced to a point only slightly above the 

 actual capacity. Consequently, a sudden drop in temperature of only 

 a few degrees will cause the dew point to be reached and moisture to 

 be deposited in the pen. 



It is thus apparent that the addition of some heat to raise the 

 pen temperature would greatly increase the moisture carrying capa- 

 city of the air and thus make it possible to remove the excess moisture 

 from the litter (See Fig. 1, pen 1). 



NOV PLC JAN FEB MAB. APB. MAY JUN JUL AUG 5E.P- OCT NOV. 



NOV DEC JAN FEb MAC APK. MAY JUN. JUL AUG 5E.P, OCT NOV 



Fig. 4. Actual and calculated (saturated) moisture carrying capacity of 



AIR IN plot house AND POULTRY PeN 16. 



