1158 Wisconsin Academy of Sciences, Arts, and Letters. 
Daccomo and Scoccianti 1896 
Die Bestimmung des Gehaltes an Filixsaeure im kaeuflichen 
Extractum Filieis. 
Boll. Chim. farm., 5, p. 129. [Pharm., Ztg., 39, p. 280; 
Jahresb. d. Pharm., 31, p. 583; Apoth.-Ztg., 11, p. 174; Proc. 
A. Ph. A., 44, p. 433.] 
The filix acid content of a number of samples of extract of male fern 
(self prepared and commercial) was found to vary from 11.86 to 42.53 
per cent., when assayed according to the method devised by the authors. 
The average yield of extract obtained is given as 10 per cent. 
The quantity and quality of the extract is stated to be influenced by 
the locality in which the rhizomes are grown, the moisture content of the 
drug when extracted, and the solvent. Ether, specific gravity, 0.720, is 
stated to be the most suitable menstruum for this purpose. Ether, specific 
gravity, 0.756, yielded 17 per cent, of a brownish colored extract of a 
tarry consistence. The presence of alcohol is said to retard the complete 
extraction of the filix acid. 
Dieterich 1896 
Extracta spissa et sicca. 
Helfenberger Ann., 1896, p. 33. 
One sample of extract of male fern contained 1.62 per cent, of “mois¬ 
ture” and gave 0.45 per cent, of ash. 
Kraft, P. 1896 
Ueber die Wertbestimmung von Extractum Filieis und 
eine neue Bestimmungsmethode der Filixsaeure. 
Schweiz. Wochenschr. f. Chem. u. Pharm., 34, p. 217. 
[Zeitschr, d. Allg. Oesterr, Apoth. Ver. 34, p. 798; Zeitschr. f. 
Anal. Chem., 39, p/531.] 
It is stated that the method of Daccomo and Scoccianti for the evalua¬ 
tion of the extract of male fern does not give the filix acid content but 
the total acid content. Extracts examined by the author’s method gave 
from 0.4 to 10.0 per cent, of filix acid. 
A new constituent which the author calls Filixwachs was isolated from 
the extract. 
Liverseege 1896 
The Effect of Solvents on the Analytical Character of 
Ginger. 
Pharm. Joum., 57, p. 112. [Apoth.-Ztg., 11, p. 639.] 
The ethereal extract of ginger is stated to amount to 5.5 per cent. 
The yield to methyl alcohol is given as 6.5 per cent. 
