Features
Fair of the American Institute
A New Kind of Brick
Preservation of Timber
On Rainbow Colors
Gold Deposits in Canada
Piston Packing
Machine for Sweeping Streets
Printing Types
Switzer's Screwdriver
New Corn Planter
City Railroads
A New Styptic
Portable Mills
New Bun Cutting Machine
Car and Portable Railroad
Hanley's Castors for the Legs of PianofortesTables &c
New York City
Poisonous Chloroform—Tests for its Purity
"The Niagara Mail" vs. "Scientific American"
Magnetic Balloon Ascent
Important Patent Cases
Large Boilers
Submarine Telegraph
Colored Daguerreotypes
Patent Claims
Prizes
Patent Laws and Guide to Inventors
Cheap Postage—Important to Subscribers
Back Numbers and Volumes
Mining Machinery
Mechanics
Race of Clippers from Canton
The Hillotype
Hobbs and Chubb Again
Departments
- From the Editor
To All Whom It May Concern
To Correspondents
