50 NEW PREPARATION OP CINCHONA BARK. 
mixed, are to be distilled or evaporated until eight ounces 
remain ; and these, still boiling hot, are to be added to the 
evaporated decoction. A pint of liquid will thus be 
produced, the chief ingredient of which is dikinate of 
quinina. 
To this liquid add 315.31 grains of dinoxalate of quini- 
na, and boil for a few moments ; then add 21 troy ounces 
of refined sugar, and four ounces of best gum arabic, both in 
powder and previously mixed. The whole is to be kept 
stirring until the solution is effected ; and if the resulting 
syrup, when cold, does not amount to 32 ounces by mea- 
sure, water is to be added to make up that amount. When 
cold, filter through flannel. 
In each ounce of this syrup there will be 16 grains of 
anhydrous dikinate of quinina. This syrup is twenty-five 
times stronger than the decoction of bark. 
It remains to offer a few suggestions relative to the phar- 
maceutical employment of this syrup. In general it may 
be used in any mixture of compatible liquids, when the 
powers of bark are required, and when the other liquids 
are already sufficiently voluminous, and would be altoge- 
ther too bulky if decoction of bark were employed. Thus 
in the simultaneous exhibition of decoctions of bark and 
sarsaparilla, in equal quantities, the smallest efficient dose 
of the mixture is six ounces three times a day. By alter- 
ing the formula to fifteen and a half ounces of decoction of 
sarsaparilla, and five and a half drachms of syrup of bark, 
the same powers are exhibited in half the foregoing bulk. 
The following contains all its energy in a state of perfect 
development and activity, and is a pleasant carminative 
tonic : — 
Cinnamon water, six ounces and a half ; syrup of bark, 
half an ounce ; compound tincture of bark, an ounce. An 
ounce measure of this mixture is equivalent to thirty-six 
grains of bark in substance. 
When bark and iron are indicated, the following is the 
