248 AMERICAN JOURNAL OF BOTANY [Vol. 9 
berries than did the hand- (dry-) picked. The early-raked (partly colored) 
berries also showed a slightly higher percentage of soft berries than did 
those which were raked later after the berries were fully colored. 
After a month in storage the differences were very apparent. The 
hand-picked berries had kept far better than the water-raked, and of the 
latter the dark berries had kept better than the light-colored ones. The 
better keeping qualit}^ of the mature, dark-colored berries may be accounted 
for by the fact that the respiratory activity of fruits decreases as the fruit 
ripens. Hence their oxygen requirement is less, and they suffer less injury 
through submergence than the less ripe berries, which have a higher oxygen 
requirement. 
Counting tests were also made on several varieties of cranberries in 
storage at Minneapolis, Minn., during the winter of 1918. These berries 
were grown on the same bog and received essentially the same treatment 
after picking. The results are given in table 4. 
Table 4. A Comparison of the Keeping Quality of Dry- {hand-) picked and Water-raked 
Cranberries in Storage at Minneapolis, Minn., in IQ18 
Variety 
Method of 
Picking 
Date 
Examined 
Total 
Weight of 
Berries 
Examined 
Sound 
Soft 
Weight 
Per- 
cent- 
age 
Weight 
Per- 
cent- 
age 
Searles Jumbo . 
Water-raked- 
Nov. 12 
70 oz. 
50 oz. 
71.44 
20 oz. 
28.64 
Searles Jumbo . 
" 12 
71 oz. 
50 oz. 
70.45 
21 OZ. 
29. 6^ 
Searles Jumbo . 
" 12 
67.5 oz. 
55 oz. 
81.5 
12.5 OZ. 
18.5 
Prolific 
" 15 
58 oz. 
43 oz. 
74.2 
15 OZ. 
25.8 
Bennet Jumbo . 
" 15 
66 oz. 
48 oz. 
72.7 
18 OZ. 
27-3 
" 5 
66 oz. 
60 oz. 
90.9 
6 oz. 
9-1 
Early Black. . . . 
" 15 
68 oz. 
57 oz. 
83.8 
II oz. 
16.2 
Searles Jumbo . 
Dec. 9 
1,689 g. 
770 g. 
45-6 
919 g- 
54-4 
Searles Jumbo . 
<i "3 
9 
1,698 g. 
1,063 g- 
62.6 
635 g- 
37-4 
Searles Jumbo . 
(i "3 
9 
1,858 g. 
1,280 g. 
68.9 
578 g. 
31-3 
Searles Jumbo . 
9 
1,921 g. 
1,396.5 g- 
72.7 
524-5 g- 
27.2 
Searles Jumbo . 
9 
1,979 g- 
1,694 g- 
85.6 
285 g. 
14.4 
Searles Jumbo . 
" 10 
1,894 g- 
1,405 g- 
74.2 
489 g- 
25.8 
Searles Jumbo . 
" 10 
1,832 g. 
1,422 g. 
77.6 
410 g. 
22.4 
Searles Jumbo . 
Drv-picked 
" 10 
2,151 g- 
1,947 g- 
90.5 
204 g. 
9-5 
Searles Jumbo . 
10 
1,944 g- 
1,689 g- 
86.9 
255 g- 
I3-I 
Searles Jumbo . 
10 
2,050 g. 
1,850 g. 
90.2 
200 g. 
9.8 
Searles Jumbo . 
" II 
2,030 g. 
1,850 g. 
91. 1 
180 g. 
8.9 
Searles Jumbo . 
" II 
1,691 g. 
1,532 g. 
90.6 
159 g. 
9.4 
Searles Jumbo . 
" II 
1,931 g- 
1,778 g. 
92.1 
•153 g- 
7-9 
Howes 
Water-raked 
" II 
1,893 g- 
{ 1,629 g. 
86.1 
264 g. 
13-9 
Howes 
" II 
1,959 g- 
i,694 g- 
86.5 
265 g. 
13-5 
" II 
1,846 g. 
1,587 g. 
86.0 
259 g- 
14.0 
" II 
1,963 g- 
1,733 g• 
88.3 
230 g. 
11.7 
2 Picked early, berries not well colored, water held 23^ days, stored in barrels. 
3 Picked late, berries fully colored, water held 3 to 5 days, stored in barrels. 
4 From top of barrel. 
^ From center of barrel. 
It may be seen by comparing the percentage of spoilage of water-raked 
