398 



Profs. Percy Frankland and Marshall Ward. 



as yet low enough in temperature. Germination began about noon r 

 the temperatures meanwhile falling as follows : 



Temp. 

 Time. C. 



9.30 A.M. = 28-5 

 9.45 = 29-0 

 10.10 = 26-25 - 

 10.20 = 25-5 

 10.30 = 25-25 

 10.45 = 25-0 

 11.5 = 25-0 (fell to 24-25 on opening to 



arrange culture) 

 11.15 = 25-0 

 11.45 = 25-0 

 12 noon = 25'0 

 12.15 P.M. = 25-0 

 12.30 = 25-0 

 1.30 = 25-3 



1.35 ,. = 25-0 (at 1.55 had to open box, 

 and then fell to 22'5. At 

 1.57 = 23, 2 P.M. = 24, 

 2.15 = 24-5) 

 2.30 = 25-0 



At 2.45 1 was able to start the measurements on a vigorous rodlet 

 then selected. 



The Sachs' chamber was kept dark by a tinfoil curtain, and the 

 following table shows how constant the temperatures were : 



I had now to abandon this, owing to its breaking up and being too 

 difficult to measure. 



Another filament, part of this longer one, was therefore selected, 

 with results given in the following table and curve : 



