INSECT POWDER 55 
some wearing of the stones and a small quantity of material would be 
introduced into the powder in this way. It can readily be seen, 
however, that if this were sufficient to increase the ash content 
Sealy, say, 1 per cent, there would soon be nothing left of the 
mill. 
In order to determine whether there was any marked difference in 
the composition of the powder from that of the flowers from which 
it was made, a number of samples of closed Japanese flowers were 
collected immediately before entering the mill and samples of the 
ground product as it came from the mill. Owing to the great capac- 
ity of the milling and sieving machinery, the powder from any 
articular sample of flowers could not be identified, but when col- 
ected over a period of a working day an average of all samples 
collected should be representative of the material. In Table 41 are 
given the analyses of these samples, which represent a run of about 60 
bales (25,000 pounds) of closed Japanese flowers. Table 42 contains 
the results of analyses of Japanese stems before and after grinding. 
TaBLe 41.—Analysis of Japanese closed flowers before and after grinding 
Flowers Powder 
: Ash in- . Ash in- 
AON Ash soluble Ee Ash soluble 
, in HCl || 8 in HCl 
Per cent | Per cent | Per cent || Per cent | Per cent | Per cent 
1. 96 6. 75 0. 28 1. 735 6. 77 0. 53 
1. 66 6. 95 32 1. 705 Th 5) . 74 
1, 82 6. 85 65 1.89 6. 56 . 45 
1. 78 6. 67 29 1. 84 7.19 Sita 
1, 72 6. 92 68 1. 88 7. 61 121 
1.76 7.09 79 1. 76 7. 40 1. 00 
Iri%/ 7.01 . 74 IL /2/ 7.47 . 94 
1.79 6. 88 47 1. 74 7.47 . 92 
1, 80 feel . 82 1. 81 7. 53 1. 03 
1. 94 7. 43 97 1. 65 6. 84 . 82 
1. 76 7. 70 PAI 1. 81 eto 1. 07 
173 7.19 ii 1L78} 7. 48 1. 04 
1. 82 7. 39 . 97 1. 85 8. 23 1. 45 
1. 76 6. 96 . 60 iL, 70 Carat 1.09 
1. 81 7. 40 . 98 1. 68 7. 50 .99 
1. 81 7. 26 rei yes Tele Ok 
1. 88 To BBi 79 1.79 8. 58 1. 82 
1. 84 8. 58 2. 03 17 7.42 1. 06 
1. 84 (hte? is lb! eng fou . 86 
1.91 7. 46 . 89 1. 76 8.97 . 64 
1. 87 7. 50 . 94 1. 87 8.15 i, BR: 
1. 82 7. 63 1. 05 1. 80 8. 19 1. 64 
1. 81 7. 84 22 1. 76 7. 44 1. 04 
1. 80 Tage 1. 34 1. 76 (Ee 1 1s) 
1.90 8. 22 1. 83 1.79 7.81 1. 29 
1.70 7. 28 1. 04 Leese 7. 43 1.05 
1. 93 7. 26 1. 07 A iE 7. 64 Peri 
1.90 8. 31 a eR 7. 56 1.14 
1.91 7. 82 1. 36 IL eiT 0 7. 55 ate 1) 
1.98 7. 68 iL as} Ue ie/ 7. 42 1.12 
1. 87 7.59 1.05 1. 80 7.93 1. 46 
1. 84 (6BY¢ .99 1. 80 7. 59 1.10 
1.91 7.12 . 76 1.52 6. 59 .81 
iE 7 7. 22 . 94 
11,83 17,39 1, 96 Pci) 17.56 11.10 
1 Average 
