Nov. io, 1923 Osmotic Pressure of the Juices of the Potato Plant 245 
Table II .—Comparative cryoscopic readings in IQ 20 
No. 
Date. 
Weather. 
Variety and portion of plant. 
Depres¬ 
sion. 
Depres¬ 
sion in 
atmos¬ 
pheres. 
| 
White McCormick (mosaic): 
j 
Partly cloudy and warm (4 p. m.) 
7. 81 
0 
.626 
7 - 54 
Pink McCormick (mosaic): 
.588 
. 
* 
Old seed piece. 
. 614 
7. 40 
Dibble’s Russet: 
6 
Stems. 
.486 
5- 86 
8 
.492 
5 - 93 
Early Rose (healthy): 
.582 
. 520 
6. 27 
Burbank (healthy); coming 
into bloom: 
Bright and warm on 10th and 
.664 
nth. 
T - 
* Stems. 
.697 
8.40 
Dibble’s Russet (healthy): 
14 
Stems. 
• 654 
7. 88 
Old seed piece. 
•393 
4 * 74 
Early Rose (planted June 25, 
plants just out of ground): 
18 
• 639 
7. 68 
Dibble’s Russet: 
TO 
IO 
•539 
6. 49 
Burbank, full grown, in bloom; 
no tip burn: 
?? 
•663 
22 
8. 71 
• 764 
Lamb’s quarter: 
24 
1. 083 
13.04 
leaves. 
.898 
35 
Stems. 
. 819 
9.86 
Dibble’s Russet (some plants 
in bloom): 
27 
Bright, clear and cool; previous 
.832 
10. 02 
days same. 
28 
Old leaves. 
• 805 
Leaf stalks. 
2 
Stems of plants. 
.838 
31 1. 
New tubers (size of 
•637 
7. 67 
hulled walnut). 
j 
Early Rose, some in bloom: 
.886 
Petioles and old leaves.. 
.768 
34 
Stems of plant. 
.613 
7 - 3 & 
j 
Lettuce, plants with short 
stalks: 
36 
stems. 
.638 
7. 6^ 
3 "? 
Early Rose from garden; old 
leaves yellowing slightly: 
38 
Old leaves. 
• 729 
8. 7 <* 
40 
4 * 
Stems. 
• 693 
New tubers. 
•507 
Dibble’s Russet: 
42 
Aug. 5, 3 p. m... 
Old leaves. 
• 727 
8. 76 
. 
Is 
New tubers. 
. 617 
7-43 
Dibble’s Russet: 
46 
Aug. 6,3P. m... 
Hot and dry but no tip burn; 
Young leaves. 
.883 
zo. 64 
atmosphere hazy. 
47 
Old leaves. 
• 813 
9 * 79 
.884 
a8 
New tubers. 
.626 
7 - 54 
