MESSRS. MUNN & CO., In connection wttta the publication of the SciBfiTiFio AHSBKAN, continue to examine improremente, and to act as Solicitors of Patents for Inventors. In this line of business they have had forty-one years' experience, and now nave unequaXed faciLiUea for the preparation of Patent Drawings, Speciflcationa, and the grosecution of Applications tor Patents in the tfrnted tates, Canada, and Foreign Countries. .Messrs Munn & Co. also attend to the preparation of Caveats. Copyrights for Boolis. Labels, Reissues. Assignments, and Reports on Infringements of Patents. All business tatrusted to them is done with special care and promptness, on very reasonable terms. A pamphlet sent free of cnarge, on- application, containing fall information ahput Patents and how to procure tbem; directions concerning Labels, Copyrights, Designs, Patents, Appeals. Reissues, Infringements, Assignments, Rejected Cases, Hints on the Sale of Patents, etc. We also send, freeof charge, a Synopsis of Foreign Pa. tent Laws, showing the cost and method of securing patents in all the principal countries of the world. IHTJNN dc CO., Solicitors ol Patents, 361 Broadway, New York. BRANCH OFFICBS.-No. 822 and 624 F Street, Pa-cUcBBlldlng, near 7th Street, Washington, D. C.