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PATENTEES—Kemember we are always willing to ex ecute and publish engravings of your inventions, provided they are on interesting subjects, and have never appeared in any other publication. No en gravings are inserted in our columns that have ap peared in any other journal in this country, and-, we must be permitted to have the engraving exe cuted to suit our own columns in size and style. Barely the expense of the engraving is charged by us, and the wood-cuts may be claimed by the in ventor, and subsequently used to advantage in oth er journals. PATENT CLAIMS—Persons desiring the claims of any invention which has been patented within fourteen years, can obtain a copy by addressing a letter to this office—stating the name of the pa tentee, and enclosing one dollar as fee for copying 3IVB INTELLIOIBLB DIREOTIONS—We often receive letters with money enclosed, requesting the paper sent for the amount of the enclosure, but no name of State given, and often with the name of the post office also omitted. Persons should be careful to write their names plainly when they address pub lishers, and to name the post office at which they wish to receive their paper, and the State in which the post office is located.

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