1048 Wisconsin Academy of Sciences, Arts, and Letters, 
Table 47 —Yield of oleoresin as reported in the literature —Continued. 
Yield of oleoresin to— 
Date 
Observer 
Alco¬ 
hol 
Ace¬ 
tone 
Ether 
Other 
solvents 
Remarks 
1912 
Vanderkleed.... 
Per 
cent 
Per 
cent 
Per 
cent 
Per cent. 
J Solvent (?) 
117.36 to 24.49 
Reported as yield of oleoresin. 
Results obtained in the ex¬ 
traction of 5 samples of 
cubebs. 
Reported as yield of oleoresin. 
1913 
Dohme & Engtl- 
hardt..... 
J Solvent!?) 
116.00to 22.00 
1913 
Vanderkleed.... 
j Solvent!?) 
I 21.18 
1914 
Riedel. 
i Alcohol and 
■{ ether 
f 11.10 to 14.70 
1914 
Rippetoe. 
8.87 to 
11.04 
7.68 to 
9.80 
Results obtained in the ex¬ 
1914 
Scoville. 
j Solvent!?) 
118.10 to 22.00 
traction of 6 samples of 
cubebs. Reported as an¬ 
hydrous extracts. 
Reported as yield of oleoresin. 
Reported as yield of oleoresin. 
Results obtained in the ex¬ 
traction of 6 samples of 
cubebs. 
1914 
Vanderkleed .... 
J Solvent!?) 
113.90 to 19.80 
Table 48 — Yield of oleoresin as obtained in the laboratory. 
Yield of oleoresin to— 
Date 
Observer 
Alco¬ 
hol 
Ace¬ 
tone 
Ether 
Other 
solvents 
Remarks 
Per 
cent 
Per 
cent 
Per 
cent 
Per cent, 
j Benzin 
1910 
DuMez & Netzel. 
27.09 
26.07 
23.47 
( 18.75 
\ Petrol 
< Ether 
Represents the yield using a 
Soxhlet’s extraction app., ex¬ 
cept in the case of alcohol. 
1916 
DuMez... 
16.34 
16.76. 
15.28 
( 13.04 
Represents the yield using a 
Soxhlet’s extraction app., ex¬ 
cept in the case of alcohol. 
i 
