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Page 62
SOAP POWDERS.
These preparations are sold sometimes as a dentifrice and at others for
shaving; they are made by reducing the soap into shavings by a plane,
then thoroughly drying them in a warm situation, afterwards grinding in
a mill, then perfuming with any otto desired.
RYPOPHAGON SOAP.
Best yellow soap, }
Fig soft soap, } equal parts melted together.
Perfume with anise and citronella.
AMBROSIAL CREAM.
Color the grease very strongly with alkanet root, then proceed as for
the manufacture of saponaceous cream. The cream colored in this way has
a blue tint; when it is required of a purple color we have merely to
stain the white saponaceous cream with a mixture of vermilion and smalt
to the shade desired. Perfume with otto of oringeat.
TRANSPARENT SOFT SOAP.
Solution caustic potash (_Lond. Ph_.), 6 lbs.
Olive oil, 1 lb.
Perfume to taste.
Before commencing to make the soap, reduce the potash lye to one half
its bulk by continued boiling. Now proceed as for the manufacture of
saponaceous cream. After standing a few days, pour off the waste liquor.
TRANSPARENT HARD SOAP.
Reduce the soap to shavings, and dry them as much as possible, then
dissolve in alcohol, using as little spirit as will effect the solution,
then color and perfume as desired, and cast the product in appropriate
moulds; finally dry in a warm situation.
Until the Legislature allows spirit to be used for manufacturing
purposes, free of duty, we cannot compete with our neighbors in this
article.
JUNIPER TAR SOAP.
This soap is made from the tar of the wood of the _Juniperus communis_,
by dissolving it in a fixed vegetable oil, such as almond or olive oil,
or in fine tallow, and forming a soap by means of a weak soda lye, after
the customary manner. This yields a moderately firm and clear soap,
which may be readily used by application to parts affected with
eruptions at night, mixed with a little water, and carefully washed off
the following morning. This soap has lately been much used for eruptive
disorders, particularly on the Continent, and with varying degrees of
success. It is thought that the efficient element in its composition is
a rather less impure hydrocarburet than that known in Paris under the
name _huile de cade_. On account of its ready miscibility with water, it
possesses great advantage over the common tar ointment.
MEDICATED SOAPS.
Six years ago I began making a series of medicated soaps, such as
SULPHUR SOAP, IODINE SOAP, BROMINE SOAP, CREOSOTE SOAP, MERCURIAL
SOAP, CROTON OIL SOAP, and many others. These soaps are prepared by
adding the medicant to curd soap, and then making in a tablet form for
use. For sulphur soap, the curd soap may be melted, and flowers of
sulphur added while the soap is in a soft condition. For antimony soap
and mercurial soap, the low oxides of the metals employed may also be
mixed in the curd soap in a melted state. Iodine, bromine, creosote
soap, and others containing very volatile substances, are best prepared
cold by shaving up the curd soap in a mortar, and mixing the medicant
with it by long beating.
In certain cutaneous diseases the author has reason to believe that they
will prove of infinite service as auxiliaries to the general treatment.
It is obvious that the absorbent vessels of the skin are very active
during the lavoratory process; such soap must not, therefore, be used
except by the special advice of a medical man. Probably these soaps will
be found useful for internal application. The precedent of the use of
Castile soap (containing oxide of iron) renders it likely that when
prejudice has passed away, such soaps will find a place in the
pharmacopoeias. The discovery of the solubility, under certain
conditions, of the active alkaloids, quinine, morphia, &c., in oil, by
Mr. W. Bastick, greatly favors the supposition of analogous compounds in
soap.
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