For 1877.

The Most Popular Scientific Paper in the World,

Only $3.20 a year, including Po:tage. Sencl 10 cents for Specimen copy.

The Scientific American, now in its 32st year, enjoys the widest Circulation of any weekly newspaper of the kind in the world. A new volume commences January 1st, 1877. Published weekly. Now is the time to subscribe and to form ciubs.

No person engaged in any of the mechanical pursuits should think of doing without the Scientific American. Every number contains from six to ten engravings of new machines and inventions which can not be found in any other publication.

The Scientific American is devoted to the interests of Popular Science, the Mechanic Arts. Manufactures, Inventions, Agriculture, Commerce, and the industrial pursuits generally; and it is valuable and instructive not only in the Workshop and Manufactory, but also in the Household, the Library, and the Reading Room.

Terms

One copy, one year (postage included')................................$3.20

One copy, six months (postage h.eluded).............................. 1 .60

One copy, three months (postage included)___........................ 1.00

One copy of Scientific American for one year, and one copy of engraving, "Men of Progress"....................................... 10.00

One copy of Scientific American for one year, and one copy of "Science

K.'cord" for 1875.............................................. 5.20

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Munn & CO., 37 Park Row, New-York.

Minn & Co.'s Patent Offices. Established 1S4C. The Oldest

Agency for soliciting Patents in the United States.

Twenty-eight years' experience.

'I Oicic Patents have been secured through this agency, at home and abroad, than through any other in the world.

Sixty Thousand Inventors have availed themselves of Mann A Co.'s services in examining their inventions, and procuring their patents.

Munn & Co., in connection with the publication of the Scikntific akbbica.it, continue to examine Inventions, confer with inventors, prepare drawings, ppeclflcations, ami assignments, attend t<> tiling applications in the Patent Office, paying the government fees, and watch each case step by step while pending before LI.....caminer. This i- dour through their branch office, corner F and 7ili Streets, Washington. They also prepare and Hie caveats,

Mini' Design Patent

, trademarks, and re-issues, attend i" rejected cases prepared by the inventor or other attorneys), procure copyrights, attend to interferences, give written opinions on matters of Infringement, furnish copies of patents; in fact, attend to <-\ery branch of patent busini-^ both in this and in foreign countries.

i it nis obtained in Canada. England, France, Belgium, Germany, Russia, Prussia, Spain, Portugal, the British Colonies, and all other countries where patents are granted.

( pedal notice- Is made in the BuuMTiFic American of all Inventions patented through this Agency, with the name and residence of the patentee. Patent-) are often sold, In pari or whole, t>> persons attracted to the Invention by such notice,

A pamphlet of no pages, containing the laws and full directions for obtaini»■ i-r United statf- Patents, also a circular pertaining exclusively to Foreign Patents, stating costs in each country, time granted, etc., sent free. Address

Munn & Co., Publishers Scientific American, 37 Park ROW, N. Y.

Branch Office, Cor. F and 7th sts., Washington, D. C.