122 
ON ALCOHOLIC TINCTURES. 
Senna, l gr. of tincture equal to 0-19 in powder. 
Squills, 1 gr. " 0-17 
Blk. hellebore, 1 gr. " 0-18 
Rootofasarum 1 gr. " 0-19 
Contrayerva, 1 gr. " 20 
Milkwort, 1 gr. " 0-18 
Ginger, 1 gr. u 0-20 
According to the Codex, 8 parts of alcohol at 56° are re- 
quired for tincture of cantharides. 
We prepare, with 1 part of the substance, and 5 parts of 
alcohol at 45°, the following tinctures : 
Valerian root, 1 gr. of tinct. equal to 0-19 in powder. 
White hellebore, 
I 
gr. 
cc 
0*18 
CC 
Bulbs of meadow 
saffron, 
I 
gr. 
a 
0-19 
CC 
Leaves of asarum, 
1 
gr. 
u 
0-19 
CC 
Wolfsbane, 
I 
gr. 
cc 
0-19 
cc 
Hemlock, 
1 
gr. 
cc 
0-18 
cc 
Belladonna, 
1 
gr. 
cc 
0-19 
cc 
Henbane, 
1 
gr. 
cc 
o-is 
cc 
Stramonium, 
1 
gr- 
cc 
0'18 
cc 
As to the mode of preparing these tinctures, I think ex- 
perience has sufficiently proved that of all the plans pro- 
posed, cold maceration is the best. Chemist. 
* The author, in offering the opinion that cold maceration is the best, 
does it with reference to obtaining a saturated solution of the soluble mat- 
ter of the drugs, without reference to economy, and by repudiating the 
employment of displacement as a means of obtaining the full amount of 
the saturated liquid after maceration, in many instances a loss of 30 per 
cent, will be the consequence, owing to the bulk of the ingredients. 
Expression is but an imperfect means of extracting the saturated fluid in 
numerous cases. It may be well to observe that the proportion of men- 
struum recommended by M. Personne, is less in most cases than that of 
our Pharmacopoeia, and hence but few of the officinal tinctures are satu- 
rated solutions. — Ed. Am. Journ. Pharm. 
