Du Mez—The Galenical Oleoresins, 
981 
Table 10. — Yield of oleoresin as reported in the literature. 
3 Observer 
Yield of oleoresin to 
J Alcohol 
Acetone 
j Ether 
Other 
solvents 
von Esenbeck. 
Van Dyk . 
Per ct. 
Per ct 
Per ct. 
5.63 
7.30 
Per ct. 
37.5 
32.0 
Zeller. 
Meylink .. 
6.04 
Winkler.. 
15.6 
Haendess. 
8.85 
8.33 
12.87 
7.80 
8.20 
8.50 
10.30 
12.40 
11.50 
14.00 
6.51 • 
5.60 
6.20' 
5.70 
6.00 
8.50 
8.00 
11.00 
13.00 
6.00 
6.50 
5.70 
Hornung. 
Bock . 
von der Marck 
Kruse... 
f Petrol. 
1 Ether 
j 9.3 
j 3.4 
1 9.1 
l 
Kremel. 
29.0 
Trimble. 
j Benzin 
1 5.9 
Nagel woort (i) 
Beringer. 
18.0 
j Benzin 
1 16.18 
Sherrard. 
9.27 
9.87 
7.26 
8.90 
5.90 
6.12 
8.92 
9.96 
9.50 
9.88 
Bellingrodt ... 
Date 
1827 
1828 
1829 
1844 
1851 
1852 
1876 
1888 
1891 
1892 
Remarks 
Rhizomes harvested 
August. 
Rhizomes harvested in 
September. 
Rhizomes harvested in 
February. 
Peeled rhizomes dried at 
100 ° c. 
Portion of rhizomes having 
borne fronds the previous 
year. 
Portion of rhizome bearing 
fronds. 
Portion of rhizome to de¬ 
velop fronds the next year. 
Rhizomes harvested in 
April. Dried at 110° C. 
Rhizomes harvested in July 
Dried at 110° C. 
Rhizomes harvested in Oc¬ 
tober. Dried at 110° C. 
Rhizomes harvested in 
July, 1889. 
Rhizomes harvested in 
September, 1889. 
Rhizomes harvested in 
October, 1889 
Rhizomes harvested in 
December. 
Rhizomes harvested in 
February, 1890. 
Rhizomes harvested in 
April. 1890. 
Whole Rhizomes. 
Peeled 
Rhizomes from “Rheinische 
Tiefebene (Calcar).” 
Rhizomes from “Rheinische 
Tiefebene (Dinslaken).” 
Rhizomes from “Yoreifel 
(Aachen.)” 
Rhizomes from “Hocheifel 
(Gterolstein.)” 
Rhizomes from “Taunus 
(Braubach.)” 
Rhizomes from “Wester- 
wald auf Thonschiefer 
(Daaden.)” 
de Paris, 1903, p. 78. 
du Diplome du Docteur 1’University 
