Plant Cells at Low Temperatures . 409 
pressure P is the value corresponding to the observed A given in the Tables 
published by Harris and Gortner (9J. 
Graph I. 
Table I. Pice a canadensis. 
Date . 
A. 
P. 
A e . 
A — A e . 
C x io 5 . 
Sucrose %. 
Maltose %. 
Glucose %. 
Oct. 23 
1.424 
I 7* I 3 

■ — ' 
' — 
, — 
— 
— 
Dec. 7 
1.777 
21.36 
— 
— 
— . 
— 
— 
— 
» 15 
1-655 
1 9 ' 9 I 
— 
■g 9 | 
— 
„ 22 
1.680 
20*20 
— ' 
— 
’ — ' 
■' — - 
— 
„ 28 
1-635 
I9.66 
0,I 79 
z - 45 6 
77 1 
— 
— 
fc#- ■ % 
Jan. 1 
1.586 
I 9-°7 
— 
— 
— 
— 
— 
— 
„ 8 
z * 7°5 
20.50 
0-187 
1.518 
793 
— 
,, 18 
1*700 
20-44 
0.179 
1-521 
771 
■ — ■ 
. ■ — . 
Mar. 7 
1.909 
22.94 
0.214 
1.695 
921 
c.20 
O.97 
0-24 
„ 26 
2.240 
26.91 
0,1 43 
2*097 
617 
o-i 6 
O.5S 
0-47 
April 2 
1.720 
20.68 
0.119 
1. 601 
5 i 4 
o -39 
2-00 
0.01 
» 7 
1.625 
J 9-53 
0.142 
1.483 
612 
0.62 
0-00 
1. 00 
May 26 
r.750 
21-04 
0-191 
i -559 
822 
0-00 
0-77 
0.03 
June 4 
1-635 
19.66 
0.261 
i -374 
1121 
0-00 
0-00 
1.00 
2-5 
Graph II. Picea canadensis (leaves). 
