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This eBook from the Gutenberg Project consists of approximately 112 pages of information about Scientific American Supplement, No. 315, January 14, 1882.

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A catalogue, containing brief notices of many important scientific papers heretofore published in the SUPPLEMENT, may be had gratis at this office.

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THE SCIENTIFIC AMERICAN SUPPLEMENT.

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Sent by mail, postage prepaid, to subscribers in any part of the United States or Canada.  Six dollars a year, sent, prepaid, to any foreign country.

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PATENTS.

In connection with the SCIENTIFIC AMERICAN, Messrs. MUNN & CO. are Solicitors of American and Foreign Patents, have had 35 years’ experience, and now have the largest establishment in the world.  Patents are obtained on the best terms.

A special notice is made in the SCIENTIFIC AMERICAN of all Inventions patented through this Agency, with the name and residence of the Patentee.  By the immense circulation thus given, public attention is directed to the merits of the new patent, and sales or introduction often easily effected.

Any person who has made a new discovery or invention can ascertain, free of charge, whether a patent can probably be obtained, by writing to MUNN & CO.

We also send free our Hand Book about the Patent Laws, Patents, Caveats, Trade Marks, their costs, and how procured, with hints for procuring advances on inventions.  Address

MUNN & CO., 37 PARK ROW, NEW YORK. 
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