39 2 Journal of Agricultural Research voi. vii, no. 9 
are placed below in their logical groups, 50 gallons of water being used 
in each case. 
Group i. —A constant amount of nicotine sulphate, with which fish-oil 
soap was used in varying quantities. 
Plot. 
Nicotine sulphate. 
Fish-oil 
soap. 
17 . 
Ounces. 
IO 
IO 
IO 
10 
IO 
Ratio. 
1:630 
1:630 
1:630 
1:630 
1:630 
1:630 
Pounds. 
q.; . . .. 
4 ... 
3 
10... 
4 
r * 
11. 
12. 
IO 
7 
Group 2.—A constant amount of fish-oil soap, with which nicotine 
sulphate was used in varying quantities. 
Plot. 
Fish-oil 
soap. 
Nicotine sulphate. 
6... 
Pounds . 
5 
5 
5 
5 
5 
Ounces . 
3 X 
4 
IO 
Ratio. 
1:1,938 
i:i >575 
1:969 
1:720 
1:630 
7 .■. 
7 . . . . . 
8 .;. 
IO. 
Group 3.—A minimum constant amount of soap, to which nicotine 
sulphate was added in varying quantities. 
Plot. 
Fish-oil 
soap. 
Nicotine sulphate. 
18... 
Pounds. 
I 
Ounces. 
Hi' 
A 
Ratio. 
1:1,938 
i:i >575 
1:1,260 
1:969 
1:720 
1:630 
17.... 
I 
16. 
I 
4 
e 
IC . 
I 
xo 
14... 
I 
12.. 
j 
Group 4.—Fish-oil soap used alone. 
Plot. 
Fish-oil 
soap. 
Plot. 
Fish-oil 
soap. 
19 . 
Pounds. 
2 
hi 
4 
4X 
24 . 
Pounds. 
1 
7 
8 
20 .. 
2 C. 
... 
26 . 
27. 
23.. 
