80 



EXPERIMENT STATION. 



[Jan. 



Tabulation of Thertnograph Records — Concluded. 



Elapsed Time (in Hours) for Germination 

 Phase of Cress. 



Accumulated Temperature, in 

 Degree-hours. 



Above 38.2°. 



140, 

 141, 

 141, 

 142, 

 142, 

 143, 

 144, 

 144, 

 145, 

 14,5, 

 146, 

 147, 

 161, 



2,583 

 2,476 

 2,498 

 2,548 

 2,501 

 2,.i45 

 2,.524 

 2,491 

 2,538 

 2,.508 

 2,520 

 2,511 

 2,538 



Constant sum temperature, 

 Standard deviation. 

 Probable error, 



2,530 degree-hours. 



36.6° 



24.7° 



