80 



EXPERIMENT STATION. 



[Jan. 



Tabulation of Thermograph Records — Concluded. 



140, 

 141, 

 HI, 

 142, 

 L42, 

 143, 

 144, 

 144, 

 145, 

 145, 

 146, 

 147, 

 161, 



Elapsed Time (in Hours) for Germination 

 Phase of Cress. 



Constant sum temperature, 

 Standard deviation, 



Probable error, 



•2,530 degree-hours. 

 36.6° 



24.7° 





