1160 Wisconsin Academy of Sciences , Arts, and Letters. 
the volatile oil as well as the filix acid, is worthless, as the former is also 
active as a taenifuge. Old extracts which are inactive show the normal 
amount of filix acid. The diminution in activity is said to be due to the 
loss of the volatile oil by resinification and evaporation (p. 248.) 
Dieterich 1897 
Extractum Filicis aetherum, D. A. III. 
Extractum Cubebarum aethereum. 
Erstes Dezennium d. Helfenberger Ann., 1886-1895, p. 322. 
Eighteen samples of extract of male fern examined during 10 years 
showed a loss upon drying at 100°C of from 0.60 to 9.73 per cent. The 
same samples showed an ash content varying from 0.40 to 0.63 per cent. 
Four samples of ethereal extract of cubeb showed a loss upon drying 
at 100°C of 20.13 to 32.7 per cent., and gave 0.10 to 0.52 per cent, of ash. 
Glass and Thresh 1897 
Commercial Gingers and Essence of Ginger. 
Pharm. Journ., 58, p. 245. [Am. Journ. Pharm., 69, p. 320.] 
Jamaica ginger was found to yield 6.0 per cent of extractive matter 
to ether; Cochin, 4.33 per cent; African, 6.33 per cent. 
Lauren, W. 1897 
Extractum Filicis spinulosae. 
Finska Laekaresaellsk. Handl., 1897, p. 9. [Pharm. Cen- 
tralh., 39, p. 975.] 
The ethereal extract prepared from the rhizomes of Aspidmm spinulosum 
is stated to be as active a taeniafuge as that prepared from Aspidium filix 
mas. 
Madsen, H. P. 1897 
Meddelelser fra Vesterbro Apotheke Laboratorium. 
Arch. f. Pharm. og Chem., 54, p. 269. [Jahresb. d. Pharm., 
32, p. 591; Apoth.-Ztg., 12, p. 461.] 
Extracts of male fern from Denmark, Germany, Bohemia, central Rus¬ 
sia and Livonia were tested quantitatively for filix acid according to 
Fromme’s method. Those from Bohemia and central Russia gave from 
0.71 to 0.97 per cent, of filix acid; two samples from Germany gave 5.58 
and 9.58 per cent., respectively; an extract from Wolmar in Livonia gave 
13.07 per cent; the extracts from Denmark, with two exceptions (6.07 and 
8.25 per cent.), gave below 2 per cent. (p. 277.) 
