43 
Experiment 26. 
As a check on the deaths due to picking and transferring the larva? to "breeding 
cages, as also upon feeding in confinement, a number of larvie were picked October 
10, as in the other experiments, transferred, and in all respects cared for as the others 
had been. 
Date. 
Living. 
Dead. 
Oct. 12 
2 half grown. 
Total 
5 half grown 
8 
4 very young. 
1 
The facts contained in the several experiments are tabulated for convenience in 
Tables XIV and XV. 
Table XIV. — Results of experiments with various insecticides. 
Strength. 
3 i « 
fill 
y I - 
Survived, j Dead. 1 Totals. 
Insecticide. 
i 
o 
■5 
51 
> .= = 
t>5 ^| 
fe T3 g 
5 i M 
> fcf- 
x - 
P ? 
3 
r 
4 per cent 
6 per cent 
13 per cent 
19A per cent. . . 
4 per cent 
7 per cent 
4 per cent 
fij, per cent 
13 per cent. ... 
4 per cent. . . ., 
6 per cent 
13 per cent. . . . 
4 per cent 
7 per cent 
1;: per cent 
4A per cent. . . . 
13 per cent. . . . 
21 per cent 
Full 
Full 
Full 
lllT 
2 32 
3 j 12 
4 : io 
5 j 16 
6 1 21 
7 i 16 
8 ! 19 
9 1 10 
10 : 19 
11 ' 40 
12 9 
13 (*) 
14 (*) 
15 10 
16 ; 9 
17 1 6 
IS 10 
19 37 
ii 
4 
7 
2 
7 
3 
1 
(5 
8 
4 
8 
7 
3 
-2 
2 
4 
ii 
2 
2 

io 
15 
20 
2 
15 
12 
10 
12 
8 
15 
31 
7 
2 
i 
4 
1° 
5 
2 
5 
i 
6 
8 
i 
Pyretlirum emulsion, cold-water de- \ 
8 
9 
4 
6 
1 
9 
4 
5 
1 
"2 
"3 
1 
5 
9 
6 
7 
{ 
1 

Fyrethrum emulsion, hot-water de- 
'coction. { 
Fyrethrum emulsion, cold-oil ex- j 
9 
22 
\ 
4 
6 
4 
') 
2 
ft 
2 
:::: 
— 

.... 
1 
1 
"2 
3 
7 
? 
1 
2 
3 
8 
2 
i 
tract. 
Fyrethrum emulsion, hot-oil extract < 
Cold-water decoction of pyretlirum ? 
Hot- water decoction of pyretlirum . 1 
Check experiments < 

2 
? 
6 
3 S 
"i 
14 
15' 
8 
18 
10 
99 
21 8 t8 
22 49 3 
10 
5 
7 
24 
31 
Full 
24 I (*) 
25 ! 16 
Cold water 
Picked larvae - 
^ 
1 
5 
3 
2 
7 
4 
6 
8 
10 
26 i 14 3 
6 
1 
* Xot counted ; see record of experiments in the text, 
t See record of experiment in the text, 
