INSECT POWDER. 
61 
Table 38. — Analysis of commercial insect powders unadulterated with Pyrethrum stems, 
foreign plant material, or coloring matter — Continued. 
Sam- 
ple 
No. 
Made in— 
24315 
24310 
24317 
24318 
24319 
24320 
24321 I. 
24322 . 
24323 I. 
24324 . 
24325 !. 
24320 j. 
24327 |. 
24328 
24329 
24330 
24331 
24332 
24333 
24334 
24335 
24336 
24337 
24338 
24339 
24340 
24341 
24342 
24343 
24344 
24345 
24346 
24347 
24348 
24349 
24350 
United States 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
....do... 
Nitro- 
gen, N. 
Per ct. 
1.68 
1.70 
1.59 
1.55 
1.59 
1.65 
1.54 
1.63 
1.59 
1.49 
1.51 
1.43 
1.43 
1.45 
1.51 
1.45 
1.49 
1.59 
1.52 
1.65 
1.62 
1.43 
1.48 
1.45 
1.54 
1.48 
1.39 
1.41 
1.51 
1.45 
1.79 
1.73 
1.63 
1.67 
1.71 
1.62 
Ash. 
Per ct. 
7.71 
7.70 
7.58 
7.57 
7.42 
7.66 
7.46 
7.92 
7.88 
7.38 
8.06 
8.04 
7.81 
7.83 
7.65 
8.02 
7.93 
9.26 
7.17 
7.62 
7.89 
7.57 
7.68 
6.67 
7.84 
7.87 
7.34 
7.91 
7.78 
7.62 
7.89 
7.59 
7.03 
7.24 
7.32 
7.41 
Ash in- 
soluble 
in HCl. 
Per ct. 
0.53 
.51 
.62 
.64 
.62 
.54 
.64 
1.11 
1.52 
.98 
1.67 
1.55 
1.46 
1.60 
1.53 
1.78 
1.87 
3.61 1 
1.05 
1.37 
1.41 
1.77 
1.74 
.91 
1.29 
1.90 
1.73 
2.15 
Sam- 
24351 
24352 
24353 
24354 
24355 
24356 
24426 
24437 
24643 
24644 
24645 
24646 
24647 
24648 
24649 
24650 
24651 
24652 
24653 
24708 
247362 
24779 
24798 
24812 
248202 
25062 
25069 
25070 
261882 
33035 2 
Made in- 
United States 
do 
do 
do 
do 
do 
do 
do 
do 
do 
do 
.....do 
do 
do 
do 
do 
do 
do 
do 
Europe 
United States 
Europe 
United States 
Japan 
do 
United States 
do 
do 
....do 
....do 
Minimum. . 
Maximum.. 
Average 
No. samples exam 
ined. 
Nitro- 
gen, N. 
Per ct. 
1.62 
1.63 
1.65 
1.56 
1.70 
1.65 
1.51 
1.73 
1.76 
1.76 
1.79 
1.77 
1.77 
1.73 
1.77 
1.77 
1.80 
1.80 
1.52 
1.34 
1.59 
1.20 
1.56 
1.59 
1.66 
1.68 
1.26 
1.68 
1.32 
1.56 
1.08 
2.01 
1.558 
195 
Ash. 
Per ct 
7.4( 
7 
41 
8.01 
7-53 
7.71 
7.84 
7.46 
6.87 
7.44 
7.57 
7.81 
7.43 
7.64 
7.56 
7.55 
7.42 
7.93 
7.59 
6.59 
7.77 
7.35 
7.07 
7.80 
8.63 
6.86 
7.54 
6.75 
8.01 
5.53 
6.46 
5.47 
10.09 
7.52 
196 
Ash in- 
soluble 
in HCl. 
Per ct. 
0.70 
.87 
1.04 
.91 
.43 
.73 
1.49 
.69 
1.04 
1.15 
1.29 
1.05 
1.27 
1.10 
.81 
.72 
1.08 
1.27 
1.22 
2.99' 
.66 
1.18 
.20 
.29 
.44 
.68 
4.32 
.96 
195 
1 Contains sand. 2 C. cinerariaefolium grown in California. 
Table 39. — Analysis of adulterated commercial insect powders. 
Sam- 
ple 
No. 
Made in — 
Nitro- 
gen, N. 
Ash. 
Ash in- 
soluble 
in 
HCl. 
Color of ether extract. 
Adulterants. 
11301 
United States . . 
do 
do 
do 
do 
do 
do 
do 
do 
do 
do 
do 
Italy 
Austria 
United States.. 
do 
do 
do 
do 
do 
do 
Austria 
do 
Per ct. 
0.895 
1. 155 
.884 
.891 
1.080 
1 060 
1.122 
1.135 
1.120 
.910 
1.090 
1.120 
1.370 
.990 
1.180 
1.140 
.950 
1.145 
.947 
.919 
1.120 
1.210 
.820 
Per ct. 
10.26 
7.72 
6.28 
6.76 
7.17 
9.86 
12.70 
7.77 
7.06 
5.43 
7.81 
6.24 
8.71 
7.31 
7.60 
9.78 
6.37 
9.60 
6.77 
6.31 
6.12 
7.30 
23.43 
Per ct. 
3.32 
1.28 
.69 
1.83 
1.88 
3.56 
5.50 
1.90 
.57 
.07 
.16 
.57 
.86 
2.10 
.69 
2.26 
1.54 
.67 
.55 
.55 
Strong green 
11819 
11831 
12031 
12073 
12303 
12466 
do 
do 
do 
do 
Dirty pale yellow 
Stems. 
Do. 
Stems and sand. 
Do. 
Do. 
Do. 
12658 
13238 
13286 
13287 
13311 
...do 
do 
do 
do 
Greenish 
Do. 
Stems. 
Do. 
Do. 
Do. 
13823 
13824 
Slightly greenish yel- 
low. 
Lead chromatc (2.82 per cent). 
Stems and 2.27 per cent lead 
13857 
13925 
Greenish yellow 
do 
chr ornate. 
Stems and unidentified bark. 
14039 
Stems. 
14105 
14362 
14550 
14854 
15393 
do 
do 
do 
Greenish yellow 
Stems and sand. 
Stems. 
Do. 
Do. 
Stems and 1.48 per cent lead 
chr ornate. 
Stems, calcium carbonate, and 
2.07 per cent barium chro- 
mate. 
16920 
do 
