INVENTORS, MANUFACTURERS, AND FARMERS THIRTEENTH YEAR! PKOSPKCTUS OF THE SCIENTIFIC AMERICAN. This work differs materially from other publicatlona, being an Illustrated Periodical, devoted to the promulgation of information relating to the various MEOHANI-OAL and CHEMICAL ARTS, MANUFACTURES, AGRIOCLTUBE, PATENTS, INVENTIONS, ENGINEERING, MILL WORK, and all interests which the light of PRACTICAL SCIENCE is calculated to advance. Every number of the SCIENTIFIC AMERICAN containa eight pages of reading matter, abundantly illustrated with from five to eight ENGRAVINGS—all of which are expressly engraved for thia publication. All the most valuable patented discoveries ara delineated and described in its issues, BO that, as reepectB Inventions, it may be justly regarded aa an Illustrated Repertory, where the inventor may learn ivhat has been done before him in the same field which, he is exploring and where he may bring to the world a knowledge of his own achievements. Reports of American Patents granted are alao published every week, including Offloial Copies of all the PATENT CLAIMS. These Patent Claims are furnished from the Patent Office Records expressly for this paper, and published in the SCIENTIFIC AMERICAN in advance qfatl other publications. Mechanics, Inventors, Engineers, Chemists, Mann-facturers, Agriculturists, and people In every profession of life, will find the SCIENTIFIC AMERICAN to be of great valne in their respective callings. Its counsels and suggestions will save them hundreds of dollars annually, besides affording them a continual source of knowledge, the valne of which is beyond pecuniary estimate. Much might be added to this Prospectus, to prove that the SCIENTIFIC AMERICAN is a publication which every Inventor, Mechanic, Artisan, and Engineer in the United States should patronize; but the publication is ao thoroughly known throughout the country that we refrain from occupying further space. TERMS OF SUBSCRIPTION—Two Dollars a Year, or One Dollar for Six Months. Southern, Western and Canadian money or Post Office stamps, taken at par for subscriptions. Canadian subscribers will please to remit twenty-six cents extra on each year's subscription, to prepay postage, CLUB RATES, Five Copies, for Six Months........,,.......94 Ten Copiea, for Six Months.................$8 Ten Copies, for Twelve Months...........815 Fifteen Copies, for Twelve Months........$22 Twenty Copies, for Twelve Months.......!28 For all olubs of Twenty and over, the yearly sub ecription Is only $1 40. Specimen copiea will be Ben gratia to any part of the country. [ MUNN &CO., Publishers and Patent Agentfl, — No. 128 Fulton street, New York, f V it - ... - 5