1004 Wisconsin Academy of Sciences, Arts, and Letters. 
old and contained deposited material equal to nearly one-half 
of their bulk, the high iodine values obtained for the super- 
natent liquid portions were very likely due to the concentra¬ 
tion of the compounds of a lesser degree of saturation (glycer¬ 
ides of the unsaturated fatty acids) as a result of the decom¬ 
position and deposition of the more highly saturated com¬ 
pounds (crude filicin). The results obtained in the determina¬ 
tion of this constant are shown in the following tables: 
Table 25 .—Iodine values of laboratory preparations. 
Sample 
No. 
Date 
Observer 
Solvent 
Iodine value 
[. 
1911 
1913 
1913 
1916 
1916 
Evans Sons, Lescher & Webb. 
DuMez... 
Ether'. 
Acetone_..... 
101.8 
95.3 
99.8 
106.3 0) 
108.1 ( l ) 
> 
Ether. 
i. 
“ 
Acetone. 
> 
•> 
Ether. 
1 These preparations were six years old when examined. 
Table 26. — Iodine values of commercial oleoresins. 
1 
2 
1 
2 
B 
4 
1 
2 
3 
4 
5 
6 
7 
8 
1 
2 
3 
4 
Sample 
No. 
Date 
Observer 
Source 
Iodine 
value 
1804 
im 
Dieterich. 
Evans Sons,Lescher & Webb 
Germany. 
Not given 
100.6 
84.2 
89.2 (!) 
92.SC 1 ) 
95.9 
1913 
DuMez 
1916 
England. 
Manila. P. I. 
England. 
United States........ 
Germany. 
England.. 
Germany... 
United States. 
Squibb & Sons.. 
Stearns & Co. 
Lilly & Co. 
Parke, Davis & Co... 
85.80 
87.2 O 
89.4 P) 
94.4 
97.1 
98.3 C 1 ) 
100.2 
101.5 
95.30 
97.70 
98.20 
103.2 
1 Adulterated with castor oil. 
2 Low in crude filicin content. 
5 Contained ether. 
Other Properties 
The oleoresin, when freshly prepared, is homogeneous, but 
upon standing, a deposit is formed therein as a result of the 
breaking down of some of its constituents. The precipitated 
