--Dissection and
the progress of toxicology have decreased the number of poisoning
cases; and experience has already proved that ``Marsh's
preparation'' has rendered poisoning by arsenic, once so common,
comparatively rare.--A similar process has recently been suggested
as a means of detection in cases of forgery, for when documents
are exposed to iodine vapour, effaced or altered writing is
restored.--Women doctors will diminish the opportunities of
immorality.--The free expression of opinion will do more to
prevent its possible dangers than trials of a more or less
scandalous kind.--Piracy, which was not extirpated by
punishments which are now obsolete, is disappearing under the
effects of steam navigation.--The spread of Malthusian ideas
prevents abortion and infanticides.[15]--Systematic bookkeeping,
by its clearness and simplicity, obviates many frauds and
embezzlements, which were encouraged by the old complicated
methods.--Cheques, by avoiding the necessity of frequent
conveyance of money, do more to prevent theft than punishments can
do.--The credentials given by some banks to their clerks, whose
duty it is to witness the signature of the actual debtor, prevent
the falsification of bills.
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