MESSRS. MUNN & CO., in connection with the publication of the SciKNTiPic AMERICAN, continue to examine improvements, and to act as Solicitorsof Patents for Inventors. In this line of business they have bad forty-me years' experimce, and now have unequakd facilities for the preparation of Patent Drawings, Specifications, and the prosecution of Applications for Patents In the United Stetes, Canada,and foreign Countries. Messrs. Munn & Co. also attend to the preparation of Caveats. Copyrights for Books, Labels, Reissues, Assignments, and Reports on Infringements of Patents. All business intrusted to them is done with special care and promptness, on very reasonable terms. A pamphlet sent free of charge, on application, con-tainm full information about Patents ana how to procure them; directions concerning Labels, Copyrights, Designs, Patents, Appeals, Reissues, Infringements, Assignments, Rejected Cases. Hints on the Sale of Patents, etc We also aena,freeof charge, a Synopsis of Foreign Patent Laws, showing the cost and method of securing patents in all the principal countries of the world. MITIVIV & CO., Solicitors of Patents, 361 Broadway, New York. BRANCH OFFICES.-n0.622 and 624 F Street, Pa-oiflc Boildiag, near Ttb Street. WaebinstoD, D, C.