New York Agricultural Experiment Station. 41 
DUPLICATION STUDIES. 
Clawson wheat, twenty rows planted as duplicates 1886, gave the 
following figures, calculated to percentages. From 1,078 to 1,090 
seeds constituted each planting: 
ROW. 
Vegetation 
percentage. 
Per cent of 
plants sur- 
vived winter. 
Winter 
killing, per 
cent. 
1 
75 
70 
75 
69 
74 
73 
78 
72 
74 
76 
75 
83 
75 
72 
69 
71 
68 
74 
74 
67 
44 
37 
20 
30 
23 
28 
30 
25 
26, 
36 
32 
34 
46 
41 
33 
27 
26 
34 
38 
31 
56 
63 
80 
70 
77 
72 
70 
75 
74 
64 
68 
66 
54 
59 
67 
73 
74 
66 
62 
69 
2 
mm£y 
4 
t$ . : 
6 
7 
8- : 
9 
10 
11 . .. 
12 
13 
14 
15 
16 
17 
18, 
X5 
20 
Average 
73 
32 
68 
Comparing the sums of the first ten and the second ten rows, we 
have : 
No. of seed 
planted. 
No. of seed 
vegetated. 
Yv T inter 
killing, per 
cent. 
First ten rows 
Second ten rows 
Whole twenty rows 
10,848 
10,833 
7,989 
7,886 
2,393 
2,697 
21,681 
15,865 
5,090 
6 
