108 BOTANICAL GAZETTE [FEBRUARY 
JANUARY 19-23, IQII; CROP OF IgI0 
1st day ad day 3d day 4th day 5th day 
7 17.8° 18.7° 21.8° 27.8° te ig 
Flask 8 17 18.5 22:3 26.90 ats 
Flask 13 1747 18.5 22.4 26.4 33.0 
Average gain...... 1033 4.93 9.8 14.63 
Flask 9 7.0" 17.9° 22.7° 25.3 
Flask 10 17.5 18.4 23.7 26.4 
Flask 11 17% 19.0 23.1 24.9 
Flask 12 17.0 18.0 +2 27.9 
Flask 13 7.0 19.5 25.55 28.1 
Average gain...... 1.44 6.72 9.4 ote 
Flask 10 17.2° 17.8° 21.8° 25.8° 29.1 32.8° 
Flask 11 £904 17.8 19.4 23.7 23.6 25.2 
Flask 12 17.1 17.6 19.3 21.3 25.2 24.4 
Flask 13 17.2 17.8 22.2 26.8 35-4 
Average gain ...... 0.6 3.52 7.25 9.52 12.3 
It should be said that the following temperatures were obtained 
under the far from uniform conditions of the laboratory, for I did 
not at that time have a constant temperature room. 
AprRIL 29-MAy 2, 1908; CROP OF 1907 
bt ee ee 22.7° 27.0° 33.4 36.8° 
Pinek tics: s. 21.6 25.7 35-1 40.5 
Plssk 300... 22% 27.3 an 4 41.4 
Flask 4:2. 24: 22.4 27.4 35.0 38.8 
Blase 0, 5.5 3 23.3 26.5 34.5 40.0 sant 
ise elias 
Average gain...... 5.56 12.44 7.3 
Ete 
Assuming the correctness of these figures (and both the 1908 and 
tg1t figures above given are among many that might be given) and 
making all due allowances for the differences in temperatures 
between the laboratory and the constant temperature room, one 
must admit there appears to be a decided difference in the amounts 
