MESSRS. MUNN&CO in connection with the publication of the SCIENTIFIC AMERICAN, continue to examine improvements, and to act as Solicitors of Patents for Inventors. in this line of buslness they have had forty years' experience, .. and now nave unequaled facilities for the preparation of Patent Drawings, ,Specifications, and the prosecution of Applications for Patents In the United States, 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 forms A pamphlet free of charge on application containing full information about Patents and how to procure them; directions co:qcerning Labels, Copyrights, . Designs, Patents, Appeals, Reissues, Infringements, As signments. Rejected Cases, Hints on the Sale of Pa tents, etc. We also send. free of charge. a Synopsis of Foreign Pa tent !Jaws, showing the cost and method of securing patents in all the principal countries of the world. MfJNN k CO. , Solicitors of Patents. j 361 Broadway, New York. BRANCH OF)j 'ICES--No_ 62 and 62' F Street. P