a 
INSECT POWDER 57 
pentoxid of C. rosewm correspond closely to those of the closed flowers 
of C. cinerarizfolium. The powder prepared from the flowers of 
C. roseum is much darker and has a different odor than the ordinary 
insect powder. The odor of an insect powder and a microscopical 
examination should serve as a means to determine whether or not the 
product has been prepared from (. roseum or C. cinerarizxfolium. 
TABLE 43.—Analysis of insect flowers (Chrysanthemum roseum) 
I 
| h 
= SaeEE Ether Pento- Crude | |, As 
Sample No. N P205 Sxtract Se fiber | SH | imsoluble 
|} in HCl 
| 
} | 
| Per cent | Per cent | Percent | Percent | Per cent | Per cent | Per cent 
UIT Wk feel eh SO oh de POR EY ga: 3k | EF. mabe ect ip ee SPS ey 8.75 | 0. 60 
egipieet one ee See SE Zoli 2. 2 LeRoi Ea ie pink CF nee 8. 45 35 
a7 PS URS ERs 2. 26 0.714 2.83 13.78 20.44 11.09 | Ll 
gS psi t ME eT) Ba es feaetenta! | 69r 2.74|- 13.21] 20.04] 10.89 | 1. 45 
711 (7 SRR leer Sa gO Bi yk ae 2. 04 . 738 2. 73 13. 42 19.31 | 11.90] 1.51 
nin TS, ot eS. ees rR ANS cele ee Es es eel at AP oe Cpe oer } ere ERGO 3. 42 
epee ae acre ee 2.08 | CGE I teal Eire ENGST 18.46] 9.15] 45 
Ce) eA Ne ie Oe ee ER eT 2.00 | 581 fk GEAPS VEE oe en 17. 80 | 9. 88 | 1. 26 
Minimum: ©2545. os: 1.95 | . 581 2.73 13. 21 17. 80 | 8.45 | 35 
Piastmums < etea ee | 2. 26 | . 738 2. 83 13. 78 20.44] 12.62 | 3. 42 
FAVCFAPC.. So) te ees 2. 08 . 673 PASTS 13. 47 19.21 | 10. 34 | 1. 27 
| i | 
Samples of C. leucanthemum (generally called ‘field daisy” or 
“oxeye daisy”’ in this country), which have been largely used in the 
past, and to some extent at the present time (S26), as an adulterant 
of insect powder, have been analyzed in the Insecticide and Fungicide 
Laboratory (Table 44). 
TapiEe 44.—Analysis of Chrysanthemum leucanthemum 
| | 
fee | ~ Ash 
Sample re pes | Nitrogen, pees | Ether Pento- Crude 
No. Description N | Ash | eae P205 extract | sans | fiber 
| | | 
| 
| Per cent | Per cent | Per cent | Per cent | Per cent | Per cent | Per cent 
14933 1| Flowers only_________- 1. 82 10. 02 0. 92 0. 684 3.18 | 14. 34 20. 14 
22ti7 i CO ae Pn es 2. 23 10. 45 2 Cl ee eee et Pe eee eee es oe ee 
23020 | Stems only_____-----_- 1.45 | 10. 38 Std aie ees: 3 were sete ai | ees thd ela 
1 Sent in as “‘false’’ insect flowers. 
2 Collected near Markham, Va. 
Restutts oF ANaAtysts (1918 To 1924) 
From 1918 to 1924, inclusive, nearly 1,100 samples of Pyrethrum 
flowers, of European and Japanese origin, Pyrethrum stems, Pyre- 
thrum roseum flowers, and insect powders, both pure and adulterated, 
were examined. The results of these analyses are reported in Tables 
45 and 46. During this period most of the insect flowers imported 
were labeled “ Pyrethrum flowers”’ or “insect flowers.” In reporting 
the analyses no attempt has been made to separate the samples 
examined into grades, as “closed,” “half-closed,” or “open.” 
