1917] 



GROVES— DURATION OF SEEDS 



181 





> 



TEMPERATURE COEFFICIENT 



The temperature coefficient (Q I0 ) of the life duration of wheat 

 was found to vary with the moisture content. The average value 

 for 9 per cent moisture, calculated by the method of least squares, 

 is 9.23; for 12 per cent moisture, 10.14; and for 17.5 per cent 



working with barley grains, 



moisture, 9.83. Goodspeed (16), 



found a coefficient varying from 10 to 16 as calculated by Kanitz 



(20). The result obtained by Goodspeed is marred by the lack 



Fig. 5 



rmination and control of the moisture 



Since the 



seeds were soaked for only one hour previous to heating, they had 



maximum amount 



Such seeds, when 



temperatures 



time, show considerable difference in 

 by calculation, according to formula 



I find 



Q I0 , and on 



from 



Av res 



(c 





