ON ALCOHOLIC TINCTURES. 
107 
This substance was tested like the preceding. The tinc- 
tures subjected to the proof were also prepared with one 
part of the substance, and five parts of alcohol of different 
degrees of strength, and as we were unable to decide upon 
the difference in the degree of bitterness, exhibited by each 
of these tinctures, after having been diluted with the same 
quantity of water, I see no necessity for changing the degree 
of strength adopted in the Codex, especially as this tinc- 
ture, like the two preceding, is often administered alone. 
I should, therefore, recommend alcohol at 56°. 
Here again, as we see, is an exception to the general 
rule, which is, that four parts give more extract than five 
parts, but, I repeat, that as there is certainly an advantage 
in employing the same proportions in the greatest possible 
number of cases, I should adopt the proportion of 5 parts 
of alcohol. 
10. Foxglove. 
1 pt. 15 gr. by 60 gr. or 4 pts. ale. at S0° total ext. 3*65 
" 75 " 5 " id. " 4-11 
" 60 " 4 <> 56 " 5-47 
« 75 " 5 " Id. " 5-66 
« 90 " 6 " id. " 5-80 
« 75 " 5 " 45 " 502 
Instead of alcohol at SO , as directed by the Codex, I 
should, in this case, adopt alcohol at 56°, because, as we 
perfectly well know, especially since the work of M. Ho- 
molle, the active principle of digitalis is very readily dissolv- 
ed by water. For a long time, also, no one has been igno- 
rant of the caution Avith which tincture of digitalis ought to 
be administered, on account of its powerful effects. I here 
also give the preference to the proportion of five parts of the 
solvent, neglecting the small excess of matter dissolved by 
six parts. 
