TechnologyAugust 1, 1935
Sun Clocks
Beautiful Garden Ornaments, Sun Clocks, Not Sundials, Dependable to Within One Minute
Stories by Russell W. Porter
The SciencesAugust 1, 1928
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 SciencesNovember 1, 1927
A Simple Study in Optics
The SciencesJuly 1, 1927
Watching the Earth Turn Over
The Famous Pendulum Experiment which Makes Visible the Earth's Rotation May be Performed with Simple Apparatus
Space & PhysicsMarch 1, 1926
Mountings for Reflecting Telescopes
TechnologyFebruary 1, 1926
Mirror Making for Reflecting Telescopes
The SciencesAugust 3, 1918
A New Form of Mounting for Large Reflectors
The SciencesMay 4, 1918
The Enclosed Observing Room
The SciencesAugust 4, 1917
An Amateur's Observatory
An Attempt to Make Observation Comfortable in Cold Weather
The SciencesJanuary 16, 1915
Astronomy in the Arctic
Some of the Duties and Hardships of Observers in the Frigid North