But with generous and no
less judicious freedom, they are endeavoring to extend the knowledge
of this wholesome and economical process of domestic sanitary
engineering as widely as possible, and so allow us to present the
following instructions for those who may desire to construct their own
apparatus.
In the brief introduction to his pamphlet, Mr. Waring says:
"It is sufficiently understood, by all who have given the least thought
to the subject, that the waste of the most vital elements of the soil's
fertility, through our present practice of treating human excrement
as a thing that is to be hurried into the sea, or buried in underground
vaults, or in some other way put out of sight and out of reach, is
full of danger to our future prosperity.
"Our bodies have come out of our fertile fields; our prosperity is
based on the production and the exchange of the earth's fruits; and
all our industry has its foundation in arts and interests connected
with, or dependent on, a successful agriculture.
"Liebig asserts that the greatness of the Roman empire was sapped by
the _Cloaca Maxima_, through which the entire sewage of Rome was
washed into the Tiber.
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