MESSRS. MUNN & CO., in connection with the pubU-cation ut the SciENTiricyUKRiCAN. continue to examine iuiprovementa, andTO act as Solicitors of Patents for Inventors. In this line of business they have had forty-one years' experience, and now have unequaled fcKiliUes for the preparation of Patent Drawings, Specifications, and the prosecution of Applications for Patents in the United States, Canada, and Foreign Countries. ?? essrs Munn SL Co. also attend to the preparation of Caveats, Copyrights for Books. Labels, Reissues. Assignments, and Reports on Infringements of Patents. All businese Intrusted to them is donewith special care and promptness, on very reasonable tems. A pamphlet sent free of cnarge, on application, containing full information about Patents and how to procure them; directions concerning Labels, Copyrights, Designs, Patents, Appeals, Rnissues, Infringements, Assignments, Rejected Cases, Hints on the Sale of Patenta, etc. We also send, freeof dharoe, a Synopsis of Foreign Patent Laws, showing the cost and method of securing patents in all the principal countries of the world. pt??? & CO., Solicitors of Patents, 361 Broadway, New Torlc. BRANCH OPFICES.-No. 622 and 624 ? Street, P-dllo Bnilding, near 7tb Street, Waihington. D. C.