312  Relative  Strength  of  Certain  Preparations,   {^^'/y^^^ ^^^z^ 
Tinctura 
Weight  of 
1  fluidouiice. 
U.  S.  P., 
1870. 
L.    H.  m 
422 
Aconiti  rati  
Bellatlonnee  
Caluinbse  
Capsici  j  417 
Cardamomi  !  418 
I 
Cardam.  comp...  |  
Cinchou.  comp  
Cinnamorai  
Digitalis  
Gentianse  comp  
Hyoscyami  
lodi  
Kramense  
Lavand.  comp. 
Lobelise  
Myriliai  
Nncis  vom  
Opii  
Opii  camph  
Opii  deodor  
Sanguinari*.... 
Valerianae  
Spir.  camphor.. 
420 
411 
433 
435 
423 
448 
U  S.  P., 
L.    H.  m 
4081  423 
451 
440 
410  438  i  420 
408  408 1  407 
 I 
■  j.  j  444 
419  452  433 
394  400  397 
I 
426 
427 
370  j  370 j  373 
 j   375 
420 i  447  435 
427 j  4401  435 
 i  ! 
,  i  i  423 
424 1  422 
  380 
Active  drug  in  1  floz., 
weight  in  grains. 
U.  S.  P., 
1870. 
180 
u.  s.  p. 
L. 
420 
45 
12* 
37-5 
1-8 
37-5 
60 
60 
66 
151 
62-5 
40-8 
20-5 
33-5 
31-5 
42 
1-71 
84 
H.  m. 
154 
42- 
36*1 
32 
75-2 
44-7 
l-7( 
84-8 
153 
63-7 
41-5 
19-5 
66 
21 
40-  7 
41-  5 
66-6 
34-6 
65-7 
31-7 
85 
85 
74-6 
7-5 
43-5 
1-74 
45-5 
63-4 
84-4 
38 
*  Extract  =  120  grains  of  nux  vomica. 
The  tincture  which  has  attracted  most  attention  is  tinctura  opii,  the 
strength  of  wliich,  under  the  instructions  of  the  Convention,  was 
increased  about  14  per  cent,  (one-seventh),  Avith  the  view  of  decreasing 
that  of  the  wine  and  vinegar  of  opium,  and  thus  rendering  all  the 
strong  liquid  opium  preparations  of  uniform  percentage  strength.  To 
what  slight  extent  this  change  of  the  tincture  affects  the  dose  is  readily- 
seen  by  comparing  the  former  theoretical  strength  with  the  results 
practically  obtained  with  the  new  tincture : 
