THE SCIENTIFIC AMERICAN SUPPLEMENT ESTABLISHED 1876

is a weekly publication of the same size as the _Scientific

American_ and contains articles too long or too technical for the

parent paper. Lectures and Papers read by famous scientists before

learned societies are published in full or in abstract; articles from

foreign papers, otherwise inaccessible to those who read English only,

are translated; and original articles on technical subjects are a few of

the valuable features of the paper; fully illustrated.

SUBSCRIPTION $5.00 A YEAR. MUNN & CO., PUBLISHERS, 361 BROADWAY, NEW

YORK CITY

COMBINED RATES

Scientific American

and Supplement .............................. $7.00

Scientific American

and Building Edition ......................... 5.00

Scientific American, Scientific American

Supplement, and Building Edition ............. 9.00

PATENTS In connection with the publication of the above-

mentioned journals, Messrs. MUNN & COMPANY have for fifty years acted as

solicitors in preparing and prosecuting applications for patents,

trademarks, etc., before the Patent office. HAND BOOK on Patents sent

free on application. Patents procured through us are noticed without

charge in the _Scientific American._

MUNN & CO., SOLICITORS. 361 BROADWAY, NEW YORK CITY BRANCH OFFICE,

WASHINGTON, D.C.

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