1002 Wisconsin Academy of Sciences, Arts, and Letters. 
The relatively high values obtained in the laboratory for the 
old preparations low in filicin content (16.0 and 16.27 per cent, 
respectively) is very likely due to the effect caused by the 
hydrolysis of the constituents of high molecular weight with 
the formation of acids of comparatively low molecular weight. 1 
The saponification values found for the preparations examined 
in the laboratory as well as those reported in the literature are 
given in the tables which follow: 
Table 23 —Saponification values of laboratory preparations. 
Sample 
No. 
Date 
Observer 
Solvent 
Saponifica¬ 
tion value 
1887 
Kremel .. 
Ether, ..... 
116 to 165 
1-20 _ 
1911 
Pa.rry . 
280 to 250 
1 . 
1.913 
DuMez.. . 
Acetone . 
208.8 
2. 
Ether . 
229.3 
1 . 
Harrison & Self. . 
225.0 
2. 
227.0 
3 .... 
236.5 
4. 
248.0 
5 . 
248.9 
6. 
«• 
251.5 
7 . 
252.0 
8 . ...... 
254.5 
9 . 
255.0 
10 . 
.4 
259.0 
11 
‘ 4 
259.0 
1 
1916 
DuMez . 
Acetone . 
245.2 (*) 
2 . 
Ether . 
246.4 (O 
( x ) Old preparations low in filicin content. 
1 See under “Chemistry of the drug and oleroesin.” 
