1166 Wisconsin Academy of Sciences, Arts , and Letters. 
which they are grown, the time of the year when harvested, storing, etc., 
and the effect of the same upon the activity of the extract is emphasized. 
Eight per cent of extract is reported as having been obtained from 
rhizomes harvested in the spring. 
Kraft, F. 1902 
Untersuchung des Extraetum Filicis. 
Schweiz. Wochenschr. f. Chem. u. Pharm., 40, p. 322. 
[Chem. Centralb., 73, 2, p. 53; Pharm. Ztg., 48, p. 275.] 
Two new substances were isolated by the author from the ethereal ex¬ 
tract of male fern, flavaspidin and an amorphous acid. The amorphous acid is 
reported to be the active principle and to be present to the extent of 5 per 
cent, in a good extract. 
- 1903 
Table showing suggested standards, ranges of specific 
gravity, etc., for galencial preparations. 
Southall Bros., & Barclay, Lab. Rep., 11, p. 23. 
The standard range for the specific gravity of Extraetum Filicis liquidum 
is given as 1.000 to 1.019 at 15.5°C p. 24.) 
- 1903 
Extraetum Filicis. 
Caesar and Loretz, Geschaefts-Ber., Sept. 1903, p. 77. 
It is reported that extracts prepared from the male fern rhizomes har¬ 
vested during the previous year, when assayed according to the method of 
Kraft, yielded 27.08 to 36.6 per cent, of crude filiein. 
- 1903 
Ginger. 
Southall Bros. & Barclay, Lab. Rep., 11, p. 13. 
The following table shows the proportion of oleoresin found in three 
varieties of commercial ginger. 
Jamaica Cochin African 
Per cent. sol. in alcohol (90 per cent.) . 4.35 4.57 9.93 
Per cent. sol. in ether, Sp. gr. 0.717 . 4.76 6.04 11.09 
- 1903 
Capsicum. 
Southall Bros. & Barclay, Lab. Rep., 11, p. 13. 
A sample of Capsicum minimum yielded ,5.67 per cent, of material soluble 
in ether, Sp. gr. 0.717, and a sample of Capsicum annum yielded 15.34 
per cent, to the same solvent. 
