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446 METALS—THE NOBLER.
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curatively
those particular symptoms characterising the poisonous effects from the
larger quantity:—on this detailed principle, Sugar (i.e., Acetate) of
Lead, when rubbed up, in minute proportion, with dry, inert sugar of
milk, will effectively meet the same morbid symptoms (when occurring
spontaneously) as signalise Lead poisoning. These symptoms are mainly
colic, obstinate constipation, some forms of paralysis, especially when
affecting the hands, and wrists, wasting palsy, and Bright's disease of
the kidneys, in its most serious form.
For
outward use as an admirably soothing lotion, which is both sedative,
and somewhat astringent, in irritative, or inflamed skin eruptions, as
well as for burns, the Solution of Sugar, (sub-carbonate), of Lead is a
very valuable application. This solution, in a concentrated form, is
known as " Goulard's Extract." It lias to be diluted for external
application as a lotion ; from one to two (silver) teaspoonfuls to each
fluid ounce of distilled water.
The
so-called Black Lead with which pencils for drawing are made, and
grates, etc., " blackleaded," is not Lead at all, in any sense. This
substance (Plumbago, or Graphites) is merely carbon, or charcoal,
uncrystallised, and mixed with some lime, together with a certain
proportion of iron. When triturated by the druggist, and thus (in
combination with some dry, inert, sugar of milk) powdered, up to a high
degree of attenuation, the Graphites will prove admirably curative of
cracked, and chapped skin (of the hands or feet) ; likewise effectually
preventive of the hair falling off prematurely.
The metal Lead is mainly of two kinds—for remedial and other uses : Galena, or a compound of Sulphur
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