486 
Strength  of  Wines  and  Tinctures, 
J  Am.  Jour.  Pharnu 
\       Oct.,  1879. 
ing  dish  and  extract  the  difference  would  necessarily  give  the  true  weight 
of  the  extract. 
The  extract  was  always  evaporated  sufficiently  so  there  would  be  no 
trouble  in  reducing  it  to  a  fine  powder. 
After  repeated  attempts  and  failures  to  evaporate  the  wines  so  that 
the  extracts  could  be  powdered,  it  was  determined  to  ascertain  the 
amount  of  soluble  matter  contained  in  the  wine  by  thoroughly  drying 
the  undissolved  powder  and  deducting  this  weight  from  the  weight  of 
the  drug  used. 
The  results  of  the  author  are  given  in  the  following  table  : 
WEIGHT  OF 
Name  of 
Preparation. 
Menstruum 
used. 
Drug. 
Residue. 
Dissolved 
matter. 
29-53  ecu  31/ 
of  the  prepa- 
tion  yield 
Tinctura  Aloes 
Al.  1 ,  water  3 
777  grm. 
1*03  grm. 
1  674  grm. 
i-68 
grm. 
"         "  u  s  P 
•84 
tt 
Vinum  Aloes, 
Sherry  wine 
777 
tt 
•90 
tt 
6-87 
tt 
1-71 
tt 
Tinct.  Colchici  rad. 
Dil.  Ale. 
46  65 
tt 
40-89 
it 
5-76 
tt 
1-44 
tt 
Vin.  Colchici  rad. 
Sherry  wine 
46-65 
a 
39-45 
tt 
7-20 
tt 
i-8o 
it 
Tinct  Colchici  sem. 
Dil.  Ale. 
I5-54 
tt 
13-80 
tt 
174 
tt 
'43 
tt 
Vinum      "  « 
Sherry  wine 
i5'54 
tt 
1425 
tt 
1*29 
tt 
•32 
it 
Tinct.  Ergotae 
Dil.  Ale. 
15*54 
tt 
13-21 
tt 
2'33 
tt 
•58 
tt 
Vinum  Ergotae 
Sherry  wine 
15-54 
tt 
14-05 
tt 
1-49 
tt 
'37 
a 
Vin.  Ipecacuanhae 
Sherry  wine 
777 
tt 
6 '99 
a 
•78 
a 
•19 
tt 
Tinct.  Ipecacuanhae 
Dil.  Ale. 
I'll 
tt 
6-15 
it 
1-62 
tt 
•40 
tt 
Vinum  Opii 
Sherry  wine 
!5'54 
a 
8-03 
tt 
7-5i 
a 
r88 
tt 
Tinct.  Opii 
Dil.  Ale. 
!5-54 
tt 
7-5i 
it 
tt 
2-00 
tt 
"       "  U.S.P. 
1*25 
tt 
Vinum  Rhei 
[  Sherry  wine 
[and  Dil.  Ale. 
15-54 
tt 
I'll 
it 
7'77 
ti 
i '94 
tt 
Tinct.  Rhei 
Dil.  Ale. 
15-54 
tt 
939 
a 
I6M5 
ft 
i'53 
tt 
"       "  U.S.P. 
1-15 
tt 
Vinum  Tabaci 
Sherry  wine 
I'll 
tt 
6-21 
a 
r56 
<( 
•39 
a 
Tinct.  Tabaci 
Dil.  Ale. 
I'll 
tt 
6*41 
tt 
1  1-36 
tt 
*34 
a 
1  The  mark  1  indicates  that  the  weight  of  the  extract  was  also  ascertained  by  direct  evaporation  of  the 
tincture. 
Remarks. — The  title  of  this  essay  is  not  quite  correct,  since  the  medicinal  strength 
of  tinctures  and  wines  depends  solely  upon  the  amount  of  active  principles  dissolved, 
and  is  not  in  proportion  to  the  total  weight  of  principles  dissolved  by  different  men- 
strua— Editor.  Amer.  Jour.  Phar. 
