moUy-colIying invention, and fit only for the whims of fidgettyold maids. It is the old system of shutting the stable doorafter the steed has taken its departure. When we hear of fouldrains emitting, as Shakespeare hath it, the rankest com-pound of most vUlanous smell that ever offended nostril,… … we know that cisterns are swimming baths for rats and othervermin; then we are most certainly glad to find that the filteris coming into more general use. But even at the present timewe do not suppose that one house in a hundred contains oneof these valuable articles, although, thanks to the…