Features
Report of the Director of the Central Park Museum, 1878
Every Man His Own Keely Motor
How Fast Can You Think?
Progress at the Patent Office
The Intensity of Telephonic Sounds
Color Blindness
Sea Water as a Beverage
Slotting Machine
Improved Circulating Generator for Steam Boilers
Improved Sewer Gas Check Valve for Stationary Wash Basins, Etc
Communications
Improved Nut Lock
Some New Workshop Appliances
New Investigations on Gallium
Improved Dovetailing Machine
Centrifugal Pumping Engine
The Victoria Regia
Redier's New Registering Thermometer
The Horn Bug
Astronomical Notes
The Philadelphia Lawn Mowers
Communications Received
The Scientific American
Departments
- Departments
Business and Personal
Notes and Queries
Patents
Index
