104 
ON ALCOHOLIC TINCTURES. 
portion of soluble matters. The Codex prescribes alcohol 
at 80°. 
5. Jalap. 
grs. 
1 pt. 15 gr. by 60 gr. or 4 pts. ale. at 90° total ext. of tinct. 3-75 
60 
75 
90 
105 
60 
60 
80 
id. 
id. 
id. 
70 
56 
Quantity of the Resin. 
4- 44 
521 
5'26 
5- 29 
4- 36 
5- 50 
grs. 
100 gr. tine, made with 1 pt. jalap &5 pts. ale. at 90° resin 
obtained 4-3S 
100 " " 80 4-850 
100 " " 70 3-825 
100 " " 56 2-745 
I should employ alcohol at SO for the preparation of this 
tincture, because it was proved by experiment, that that de- 
gree is the most favorable for the purpose of dissolving the 
greatest portion of the resin, the active principle, which it 
is our object to obtain in this medicament. I should also 
adopt the proportion of five parts of this solvent, because 
the excess of matter dissolved by a larger quantity of the 
liquid is so trifling that it may be passed over. 
The Codex employs alcohol at 56°, which, as we see. 
dissolves a much smaller proportion of the resin than the 
preceding. 
6. Ipecacuanha. 
1 pt. 15 gr. by 60 gr. or 4 pts. ale. at 80° total ext. 
75 
60 
75 
90 
75 
id. 
56 
id. 
id. 
46 
grs. 
2.02 
2- 13 
302 
3- 21 
311 
1-80 
