1142 Wisconsin Academy of Sciences , Arts, and Letters. 
Bock, H. 1851 
Analyse der Wurzel und des Wedels von Filix mas. 
Arch. d. Pharm., 115, p. 257. [Am. Journ. Pharm., 24, 
p. 61.] 
The powdered rhizomes were extracted with ether, specific gravity 0.720. 
By this means, 2000 grains of the powder are reported to have yielded 257.4 
grains of an oily extract which was found to be composed of volatile oil, 
tannic acid, resin, fatty oil stearin and chlorophyll. 
The author recommends preparing the oleoresin from fresh rhizomes as 
he states that the greater part of the volatile oil is lost upon drying and 
the fatty oil tends to become rancid. 
Lucke, E. 1851 
Ueber einige Bestandtheile der Wurzel von Aspidium 
Filix mas. 
Jahrb. f. prakt. Pharm., 22; p. 130. [Arch. d. Pharm., 119, 
p. 178; Journ. de Pharm. et de Chim., 54, p. 476.] 
A crystalline substance resembling the Filicin obtained by Trommsdorff 
eight years previous was isolated from the ethereal extract. The author 
calls it Filixsaeure and assigns it the formula C 20 II 15 O 9 It is further stated 
that extracts prepared with ether contain no tannic acid or sugar, but 
filix acid, pteritannic acid and fatty oil are present. Upon being saponi¬ 
fied, the oil yielded Filixolinsaeure (C 42 H 40 O 4 -fHO) and Filosmylsaeure. 
Von der Marck, W. 1852 
Ueber Verfaelschung der Radicis Filicis maris. 
Arch. d. Pharm., 120, p. 87. 
The botanical characteristics of other than the official species are 
enumerated and the manner in which they differ from those of male fern 
pointed out. 
With respect to the male fern rhizomes, the author gives the following 
information: rhizomes gathered in September are the most active as they 
contain the greatest amount of oil. In the preparation of the extract, only 
that portion of the rhizome having borne fronds in the year collected, 
should be taken. The following results were obtained using different 
parts of the rhizome: 
1. ) Extract from portion of rhizome which had borne fronds the 
previous year. Yield 7.8% of a brownish-green extract. 
2. ) Extract from portion bearing fronds during year collected. Yield 
8.2% of a beautiful green extract. 
3. ) Extract from portion which will develop fronds the coming year. 
Yield, 8.5% of a beautiful green extract. 
