64 BULLETIN 824, U. S. DEPAKTMENT OF AGRICULTURE. 



Table 42. — Analysis of Japanese Pyrethrum sterns,^ before and after grinding. 



Unground stems. 



Powdered stems. 



Nitrogen, 



N. 



Ash. 



Ash 



insol. 



in HCl. 



Nitrogen, 



N. 



Ash. 



Ash 



insol. 



in HCl. 



Per cent. 

 0.982 

 .814 

 .854 

 .948 

 .884 



Per cent. 

 5.03 

 5.58 

 5.07 

 5.63 

 4.81 



Per cent. 

 1.10 

 1.50 



.79 

 1.45 



.90 



Per cent. 



0.706 

 .765 



1.015 

 .877 

 .891 

 .842 

 .954 

 .891 

 .912 

 .926 

 .758 

 .961 

 .940 

 .891 

 .863 

 .870 



Per cent. 

 4.29 

 4.54 

 6.26 

 5.50 

 5.75 

 5.03 

 5.86 

 5.71 

 5.71 

 5.88 

 4.75 

 6.03 

 5.81 

 5.67 

 5.07 

 5.57 



Per cent. 

 0.85 

 1.02 

 1.94 

 1.57 

 1.66 

 1.15 

 1.54 

 1.69 

 1.72 

 1.80 

 1.15 

 1.84 

 1.81 

 1.67 

 1.28 

 1.55 



.9163 



5.22 2 



1.152 



.8792 



6.462 



1.522 



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 HCl. 



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 

 recent European war a few shipments of flowers of Ghrysaiithemum 

 roseuw. 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 O. cinerarisefolium. The values for crude fiber and 



