MESSRS: MUNN & CO.. in oonnectlon with tbe publication of the SCIENTIFIC AMERICAN. continue to examine improvements, and to art as Sollcitors of Patents for inventors. E In thie line of business ther hsTs had ferty-me vum' tuperienct, and now have luirftiolMi octtttu for the preparation Patent Drawlnits, Speciflcatlons, and the prosecution of Applleatians for Patents the United atates, Canada, and Fore Conntrles. Meesn Mtnin & Co. so attend to the preparation of Caveats, Copyriehts for Books, Labels. Relssne. Assignments, and Reporta, on Iniilwremente of Patents. All buslnesa Intrusted to them Is done with special ears snd promptness, on yerr reasonable terms A pampbiet sent free of chimie, on application, oon-talnlog full latonnatlon about Patents and how to pro-etue them; directions concemlii(t Labels, Copyrlghie, Designs, Patenta, Appeals. Rnlssnes. Infringements. As-gn mente. Rejected Cases, Hints on the Sale oi Ba. toits, eto. We also send, fret of eKarve, a Synopsis of Foreign P . t nt Laws, showing the cost and method of seetutne patents In sll the principal oonntries of the world. HIJIVir * CO., SoIlelUtr* of Patenta, aei Broadway. New York. BRANCH OTnCBS.-No. and F Street, Pa-Mflc Bnlldln . nawnb aiml, WwOtnctOD, D. C.