702 



Journal of Agricultural Research 



Vol. XII, No. II 



Since the principal difference between the samples dampened by the 

 writers and the damp grain obtained from the freight cars was the length 

 of the period of dampness, an experiment was conducted to ascertain 

 the extent to which that variable affected the rate of respiration. Two 

 samples of Bluestem wheat that had been dampened some time previous 



Af&/*f. 



/v? M /s /e 



/7 



Fig. s.— Graphs showing the comparative respiratory activity of naturally damp wheats and of wheats 

 dampened in the laboratory three days before they were incubated. 



and stored at a temperature of about 25° C. in the laboratory vault 

 were incubated in the usual manner at 37.8° C. with the results shown 

 in Table XIV. The quantity of carbon dioxid respired by the sample 

 containing 15.21 per cent of moisture, which was stored for 55 days after 

 it was dampened, was about four times as great as that respired by 

 freshly dampened wheat of the same moisture content, while that from 



