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Related article:
Glyceritum lodi is recommended by Franklin M. Apple for the purpose
of conveniently and expeditiously preparing the ointment. A formula is
given in " Proceedings," 1909, 1 132-1 133.
Glycerinum Plumbi Subacetatis B. P, Modification of Process, ^T.
Hatfield Dyson observes that the directions of the B. P. to evaporate the
prescribed quantities of ingredients for glycerin of lead subacetate to a
given weight and di specific gravity of 1.48 cannot be uniformly complied
with, because the weight and specific gravity are not necessarily equiva- ^
lent. He therefore suggests that the directions be amended to read :
Liquor plumbi subacetatis fortis, 20 fl. ozs. Famvir Online ; glycerin, 20 fl. 02s. Evaf)d-
rate to the weight of 33ji ozs., ^rsp. gr. 1.48. Pharm. Jour, and Phar-
macist, Dec. 4, 1909, 700.
Infusa et Decocta.
Infusions and Decoctions, Pharm acopcsiai Definitions and Directions.
Dr. Bulenheim, although considering the present definition and directions
for preparing infusions and decoctions an improvement on those given in
previous editions of the G. P., suggests that omitting '' Famvir Online decoctions " as an
obsolete form of preparing medicinal Famvir Online extractions, the article on infusions
might with advantage be formulated as follows :
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CONCENTRATED INFUSIONS. 89
" To prepare an infusion the drug, comminuted if necessary, is covered
with (cold) water in a suitable vessel, and heated for at least 15 minutes
in a water bath, stirring repeatedly. Moderately fine or coarsely commin-
uted drugs must be heated half an hour. The liquid is then Famvir Online strained
while hot, unless the nature of the drug demands the contrary, and if
necessary expressed."
While in the case of some drugs digitalis, ergot, etc., it is impera-
tiv^ely necessary to strain the infusion while hot, in others, notably condu-
range, it is equally necessary that the infusion is allowed to cool for some
time before straining it from the dregs. The author also suggests the
following general directions for preparing.
Macerations {^^ Auszuge^^ ^^ Extractions) : "The drug, comminuted if
necessary, is covered with the prescribed liquid and allowed to stand with-
out the application of artificial heat, stirring occasionally. It is then
strained and if necessary expressed." Pharm. Ztg., Iv (1910), No. 32,
325-
Concentrated Infusions Rational Preparation, C. Hartleb discusses
the question of admitting concentrated infusions as substitutes for freshly
prepared infusions, with particular reference to the infusions of digitalis
and of ipecac; and arrives at the conclusion that by adopting a rational
method of preparation such concentrated infusions, possessing stability and
reliability, are readily made. Taking, for example.
Concentrated Infusion of Digitalis, the author says that the glucosides
digitoxin, digitonin and digitalin, are either completely or almost com-
pletely insoluble in water, and that an infusion prepared with water alone
can contain only a very small proportion of these, admittedly the active con-
stituents of digitalis leaves. But if a small percentage of alcohol is used, a

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