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II This novel and useful Invention nsures an in- stananeous supply of Clear Filtered Ink in the cup O, the Filter which be returned into the Inkstand at any moment, where it is secured from injury, and affected by the atmosphere. The Ink thus protected, never thckens mOulds and remains good for any length of time in any climate The process of the fl- tration the coloring matter be held in pension; hence the trouble and inconvenience oeca- stoned by unsuitable Ink generally found in ordinary lnkstants, completely obviated by the of the FILTER lNKsTAHD. One of moderate size will con tain sufficient for six twelve months writing. For sale by DOUBLEDAY & SEARS,

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