SOME OF THE TINCTURES OF THE PHARMACOPEIAS.—RESULTS OF EXPERI¬ 
MENTS SHOWING INFLUENCE OF PROCESS ON PRODUCT. 
Weight of in- 
Residue of evaporation of 1 oz. 
gredientsinloz. 
of tincture. 
of tincture. 
B. P. 
B. P. 
L. P. 
L. P. 
-IShours’ 
21 days’ 
B. P. 
L. P. 
21 days’ 
7 days’ 
macera- 
macera- 
Remarks. 
tnacera- 
macera- 
tion 
tion 
, tion. 
tion. 
with 
with 
grains. 
grains. 
percola- 
percola- 
Gr. 
Gr. 
tion. 
tion. 
Gr. 
Gr. 
1 
Tinct. Aurant. 
42 
10 
15 
10 
21 
2 
ditto 
55 
• • 
• 
• • 
22 
Procured from a respec- 
3 
Calumboe . . 
54-08 
30 
8 
8 
8 
10 
table chemist. 
4 
Catechu 
Catechu . 
54-08 
42 
Cinnam. . 
21-87 
30 
70-55 
72 
40 
34 
42 
48 
5 
Chiratse . . 
54-08 
54-08 
8 
8 
G 
10 
6 
Cinchon. Co. . 
43-75 
48 
22 
A specimen procured 
Pale Bark. 
from Mr. G. 
Orange P.. 
Serpent. . 
Saffron 
21-87 
10-93 
3 
30 
9 
Q 
O 
Ditto from Mr. N., per¬ 
colation only 20 grs. 
Cochineal. 
1-5 
1-5 
81-05 
97-5 
3*0 
30 
22 
24 
7 
8 
Cinnamomi . 
Gentianse Co. 
54-08 
42 
7 
5 
84 
10 
Gent. . . 
32-81 
30 
Orange 
10-4 
15 
Cardam. . 
5-47 
7'5 
• • 
• • 
20 
# # 
Sample from Mr. G-. 
54-08 
52-5 
24 
20 
22 
22 
9 
Hyoscyami . 
54-68 
00 
15 
17 
10 
15 
10 
Myrrh . . . 
54-08 
30 
14 
13 
1G 
10 
In making the tincture 
add the myrrh to the 
spirit, and not as is 
usual the spirit to the 
myrrh. 
11 
Opii.... 
38-G 
42-3 
22 
• • 
. 
• * 
Boiled in water and ma- 
cer. sp. ten. 
12 
Opii .... 
28 grs. (Mr. N.) pcrco- 
lation only. 
13 
Opii .... 
22 
• • 
Mr. G. 
14 
Rhei Co. 
Rhei . . 
43-75 
30 
Cardamom. 
5-47 
Coriand. . 
5-47 
Saffron 
5-47 
4-5 
Liquorice . 
90 
Ginger. . 
4-5 
00-10 
48 
22 
22 
20 
24 
15 
Rhei Co. . . 
22 grs. (Mr. N.) perco- 
17 
Scillse . . . 
54-08 
00 
55 
40 
42 
00 !* 
lation only. 
083-32 
042-98 
239 
212 
212^ 
203 
This result must be from a portion of the water being retained and the difference 
betwixt the fluid ounce of the Pharmacopoeia and the ounce by weight. 
