pocket filters, the small india-rubber peg at the top being placed hi the socket-hole at thebottom. The water passus through the carbon in the direc-tions sho-wn by the arrows in the illustrations. When cleansingthe filters, the small indiarubber peg should bo removed andplaced in the socket at the… … .vithuut the filters being returned to the makers. We havetested the filter we have before us, and find it perfect in itsaction. J. RICHARDS PLASTIC METAL. This metal requires no casting furnace, no crucibles, orapparatus of any kind. Is used chiefly for pasting purposes,ind is a vei-y useful metal…
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten15unit-31-36.webp)