SCIENTIFIC AMERICAN
ESTABLISHED 1845
FOR SIXTY YEARS the Scientific American has presented in a popular form the progress of science, invention and industry. No periodical contains so vast a fund of trustworthy information on timely topics of the day. Each issue is profusely illustrated. It contains articles on such subjects of special interest as the latest discoveries in the Scientific World, the development in Electricity, Engineering, Machinery, Automobiles, Natural History, Marine Architecture in all its branches, Yachting, etc. Furthermore, each number contains a special column of brief Notes on Science, Engineering, Automobiles, etc. A special Department on Patents is published every second or third number. This contains descriptions and illustrations of interesting and novel inventions, Personal Notes about inventors and Legal Decisions in Patent, Trade-mark and Copyright cases, etc., digested in a popular and readable style. Inquiries in regard to physics, hydraulics, electricity, etc., are answered free of charge in our "Notes and Queries Department." We have special correspondents in various parts of the country, also in London and Paris, who contribute to our columns weekly.