246 
Journal of Agricultural Research voi. xxvi, No. 6 
Table II. —Comparative cryoscopic readings in 1920 —Continued 
No. 
50 
51 
52 
53 
54 
55 
56 
57 
58 
59 
60 
61 
62 
63 
64 
65 
66 
67 
68 
69 
70 
7 1 
72 
73 
74 
75 
76 
77 
78 
79 
80 
81 
82 
83 
84 
85 
86 
87 
88 
89 
90 
9 1 
92 
93 
94 
95 
96 
97 
Date. 
Weather. 
Aug. 8, 3 p. m... 
Hot and dry but hazy sunshine; 
90° F.; no tip burn. 
No tip burn... 
Aug. 16. 
Hot, dry, clear; no* tip bum as 
yet on these plants. 
Aug. 18. 
Hot and dry; brilliant sunshine; 
plants with large fruit. 
Wind from north; cool in shade. 
Some tip burn on these plants.. 
Aug. 19. 3 p. m. .1 Hot and dry; potatoes show 
j some tip burn. 
j 
Aug. 19, 3 p. m..!. 
Aug. 25. 
Fairly warm and bright; a little 
yellowing and tip burn on 
older leaves; none on younger 
leaves. 
1 
A few old leaves show tip burn.. 
Aug. 27, 3p. m,. 
Hot and clear; fairly dry; plants 
of July 30, 6 to 8 inches high. 
Variety and portion of plant. 
Depres¬ 
sion. 
Dibble’s Russet: 
Young leaves. 
0.891 
Old leaves. 
. 840 
Stems. 
• 843 
Tubers. 
.631 
Early Rose plants from garden; 
old leaves are yellow and 
dying: 
Young leaves. 
.858 
Old leaves. 
. 721 
Stems. 
• 737 
Tubers. 
. 622 
Early Rose field plants: 
Young leaves. 
. 912 
Old leaves. 
* 850 
Stems. 
• 728 
Tubers. 
•633 
Green Mountain: 
Young leaves. 
1. 028 
Old leaves. 
1.088 
Stems. 
.940 
New tubers. 
. 810 
Green Mountain plants under 
shelter: 
Young leaves. 
. 926 
Old leaves. 
.881 
Stems. 
.860 
New tubers. 
. 691 
Tomato (Early Jewel): 
Leaves. 
. 715 
Old leaves (yellowing 
. 613 
in most cases). 
Stems. 
. 581 
Green fruit. 
• S 6 2 
Irish Cobbler, from another 
field: 
Young leaves. 
1.117 
Old leaves. 
1. 001 
Stems. 
.878 
New tubers. 
.648 
Dahlia: 
Buds and tips of stalks.. 
-665 
Leaves. 
• 650 
Stems. 
. 670 
Tubers. 
.818 
Lettuce plants ( lengthening 
into stalks: 
Stems. 
. 920 
Leaves. 
. 901 
Green Mountain potatoes 
grown in open in tiles; all 
blossoms fallen: 
Young leaves. 
1. 061 
Old leaves. 
• 964 
Stems. 
• 947 
Tubers. 
• 733 
Green Mountain potatoes 
in tiles under shade: 
Young leaves. 
• 965 
Old leaves. 
.828 
Stems. 
• 763 
Tubers. 
.681 
Early Rose; no blossoms: 
Foliage. 
. 901 
Stems. 
.661 
Seed piece. 
.676 
Green Mountain plants show 
buds 8 to 9 inches high: 
Foliage. 
. 820 
Stems. 
• 705 
Seed piece.. .. 
.421 
Depres¬ 
sion in 
atmos¬ 
pheres. 
10. 73 
10. 12 
10.16 
7. 60 
10. 34 
8. 68 
8. 88 
7-49 
10.97 
10. 24 
8.77 
7-63 
12.38 
13* 10 
11*32 
9 * 75 
ii-15 
10. 61 
10.36 
8.32 
8.61 
7 * 38 
7.00 
6.77 
13 - 44 
12. 05 
10. 58 
7- 81 
8- 01 
7.83 
8. 07 
9- 85 
11. 08 
10. 85 
la- 77 
11. 61 
11. 40 
8.83 
11. 62 
9 - 97 
9.19 
8. 20 
10. 85 
7 . 96 
8 .11 
9.87 
8.49 
5-07 
