TechnologyDecember 29, 1894
Equatorial Stand for Small Telescopes
Stories by M. Hopkins
The SciencesJune 23, 1894
Lantern Slide Illustrating Sound Waves
The SciencesMarch 24, 1894
Hints on Coloring Lantern Slides
The SciencesAugust 26, 1893
Experiment Showing Magnetic Lag
TechnologyJune 3, 1893
Focusing Device for Telescopes
TechnologyMay 20, 1893
Simple Hygroscope
TechnologyAugust 20, 1892
Unscientific and Scientific Divining Rods
TechnologyNovember 21, 1891
Some Suggestions in Photography
The SciencesJuly 4, 1891
Some Suggestions in Microscopy
TechnologyJune 20, 1891
Simple Apparatus for Gathering and Examining Microscopic Objects
The SciencesMay 23, 1891
Iridescent Glass
The SciencesMay 2, 1891
Beautiful Example of Diffraction
The SciencesMarch 21, 1891
Electrical Laboratory for Beginners
The SciencesMay 18, 1889
Making Carbon Rods and Plates
The SciencesMay 11, 1889
A Magnet for Experimentation
TechnologyMay 4, 1889
Apparatus for Soldering and Melting
The SciencesMarch 23, 1889
Sensitive Flames
HealthMarch 16, 1889
Vibrations of Diaphragms
TechnologyMarch 9, 1889
Lantern Pantographs
The SciencesJanuary 26, 1889
Simple Experiments in Physics
TechnologyJanuary 19, 1889
Apparatus for Compounding Rectangular Vibrations
The SciencesDecember 29, 1888
Simple Experiments in Physics
The SciencesDecember 22, 1888
Simple Experiments in Physics
The SciencesDecember 15, 1888
Simple Experiments in Physics