The SciencesJune 2, 1894
Hints on Coloring Lantern Slides
Stories by Geo. M. Hopkins
The SciencesMarch 11, 1893
How to Color Lantern Slides
TechnologyJanuary 21, 1893
Instrument for Viewing Lantern Slides
The SciencesDecember 17, 1892
Rod and Ring Experiment
TechnologyJuly 16, 1892
A Convenient Camera
The SciencesMarch 26, 1892
An Experiment in Acoustics
The SciencesMarch 26, 1892
Optical Projection of Opaque Objects
The SciencesApril 25, 1891
The New Book Experimental Science
The SciencesApril 11, 1891
Experimental Science- April 11, 1891
The SciencesApril 4, 1891
Experimental Science- April 4, 1891
TechnologyApril 4, 1891
Optical Projection of Opaque Objects
The SciencesMarch 28, 1891
Experimental Science- March 28, 1891
The SciencesMarch 21, 1891
Experimental Science- March 21, 1891
The SciencesMarch 14, 1891
An Efficient Plating Dynamo
The SciencesFebruary 28, 1891
Experimental Science- February 28, 1891
The SciencesFebruary 21, 1891
Experimental Science- February 21, 1891
The SciencesFebruary 21, 1891
Centrifugal Action of Air
The SciencesFebruary 14, 1891
Experimental Science- February 14, 1891
The SciencesFebruary 7, 1891
Experimental Science- February 7, 1891
The SciencesJanuary 31, 1891
Experimental Science- January 31, 1891
The SciencesJanuary 24, 1891
Experimental Science
TechnologyJanuary 24, 1891
Simple Lamp Socket and Rheostat
TechnologyJanuary 17, 1891
Small Electric Motor for Amateurs
The SciencesJanuary 10, 1891
Interesting Optical Illusions