Technology
Sun Clocks
Beautiful Garden Ornaments, Sun Clocks, Not Sundials, Dependable to Within One Minute
Stories by Russell W. Porter
The Sciences
Sun Dials and Sun Dialling
There Are Sun Dials of Many Types to Suit the Purse and Skill of Every Amateur Who Enjoys the Pursuit of a Scientific Hobby
The Sciences
A Simple Study in Optics
The Sciences
Watching the Earth Turn Over
The Famous Pendulum Experiment which Makes Visible the Earth's Rotation May be Performed with Simple Apparatus
Space & Physics
Mountings for Reflecting Telescopes
Technology
Mirror Making for Reflecting Telescopes
The Sciences
A New Form of Mounting for Large Reflectors
The Sciences
The Enclosed Observing Room
The Sciences
An Amateur's Observatory
An Attempt to Make Observation Comfortable in Cold Weather
The Sciences
Astronomy in the Arctic
Some of the Duties and Hardships of Observers in the Frigid North
