_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.