VARIETIES. 
On the therapeutic action of Digitalin. By Dr. Strohl. 
The action of digitalin is the same as that of digitalis, of 
which it is consequently the true active principle. There 
is, therefore, a great advantage in using this substance be- 
cause it constitutes an identical and invariable preparation. 
It is of course important to be aware of the doses of this 
principle, as it is so much more active than the digitalis it- 
self. The following are the conclusions arrived at by M. 
Strohl relative to the therapeutic action of Digitalis and its 
administration : — 
1st. Digitalin has no particular action that distinguishes 
it from the drug, its indications are therefore the same as 
those for digitalis. 2d. Its sedative action on the heart 
may fail. 3d. It acts easily on the stomach and brain. 4th. 
In certain cases it diminishes the dyspnea without lowering 
the number of palpitations of the heart. 5th. It has the 
great advantage over digitalis of being always identical in 
composition and consequently being more sure in its effects. 
6th. The solution is preferable to the solid form. 7th. Its 
administration is commencecPwith one miligramme (l-65th 
of a grain) per day, and each dose is augmented generally 
half a milligramme daily until it increases to five or six 
milligrammes 1-1 1th to 1-1 1th of a grain.) — Jour, de 
Phartn., from Gazette Medicate de Strasbourg, 1849. 
On some Tests for Quinine. By Dr. Vogel, Jr. — A 
very characteristic test for sulphate of quinine has already 
been pointed out by Brandes. It consists in mixing a solu- 
tion of sulphate of quinine with chlorine water, and then 
adding caustic ammonia, when the liquid strikesan emerald 
green color. Starting from this experiment, I have suc- 
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