64 BULLETIN" 824, U. S. DEPARTMENT OE AGRICULTURE. 
Table 42. — Analysis of Japanese Pyrethrum stems, 1 before and after grinding. 
Un 
ground stems. 
Powdered stems. 
Nitrogen, 
N. 
Ash. 
Ash 
insol. 
Nitrogen, 
N. 
Ash. 
Ash 
insol. 
in HC1. 
in HC1. 
Per cent. 
Per cent. 
Per cent. 
Per cent. 
Per cent. 
Per cent. 
0.982 
5.03 
1.10 
0.706 
4.29 
0.85 
.814 
5.58 
1.50 
.765 
4.54 
1.02 
.854 
5.07 
.79 
1.015 
6.26 
1.94 
.948 
5.63 
1.45 
.877 
5.50 
1.57 
.884 
4.81 
.90 
.891 
5.75 
1.66 
.842 
5.03 
1,15 
.954 
5.86 
1.54 
.891 
5.71 
1.69 
.912 
5.71 
1.72 
.926 
5.88 
1.80 
.758 
4.75 
1.15 
.961 
6.03 
1.84 
.940 
5.81 
1.81 
.891 
5.67 
1.67 
.863 
5.07 
1.28 
.870 
5.57 
1.55 
.916 2 
5.22 2 
1.15 2 
.8792 
5.462 
1.52« 
1 These stems originally contained much "dirt" which was removed by sieving, 16 per cent being thus 
thrown away. The figures reported are on the stems after removal of all dirt. The discarded sievings 
analyzed: 
Nitrogen, 
N. 
Ash. 
Ash 
insoluble 
in HC1. 
Per cent. 
1.93 
1.93 
1.82 
Per cent. 
21.62 
23.23 
23.64 
Per cent. 
13-99 
15.67 
16.19 
2 Average. 
The average results for nitrogen, total ash, and ash insoluble in 
hydrochloric acid in the flowers before and after grinding agree 
closely, showing that no appreciable change in composition is 
brought about by the process of grinding. 
In the case of stems the figures for total ash and acid-insoluble 
ash are a little higher in the ground product. This is no doubt due 
in part to the sampling, as it is difficult, in the case of the unground 
stems, to obtain a uniform sample, owing to the nature of the mate- 
rial and to the way in which it is packed. 
Practically all the insect flowers imported into this country are 
the Chrysanthemum cinerarisefolium, but after the beginning of the 
r ecent European war a few shipments of flowers of Chrysanthemum 
roseum were received from Russia, through Marseilles or Italian ports. 
The results of analysis of these samples are given in Table 43. A 
comparison of these results with the corresponding figures for 
the various grades of flowers and stems of C. cinerarisefolium shows 
that the ash and nitrogen contents of C. roseum are higher and the 
ether extract and pentosans are lower than those of either the flowers 
or stems of the C. cinerarisefolium. The values for crude fiber and 
