The SciencesJanuary 3, 1891
Metallo Chromes
Stories by Geo. M. Hopkins
The SciencesDecember 27, 1890
Optical Illusions Adapted to the Lantern
The SciencesAugust 23, 1890
Now Ready
TechnologyAugust 16, 1890
The Scientific Use of the Phonograph
TechnologyJuly 26, 1890
The Scientific Use of the Phonograph
TechnologyApril 19, 1890
The Scientific use of the Phonograph
TechnologyMarch 8, 1890
The Scientific Use of the Phonograph
The SciencesFebruary 15, 1890
Some Effects of Large Currents
The SciencesOctober 19, 1889
An Electro-Plating Dynamo
EnvironmentJuly 13, 1889
Secondary Battery
The SciencesJune 22, 1889
Aspirators for Laboratory Use
TechnologyJune 8, 1889
A Siren for Measuring Velocities
The SciencesMay 25, 1889
Vortex Motion
The SciencesApril 27, 1889
Experiments in Magnetism
The SciencesApril 6, 1889
Some Experiments in Sound
The SciencesMarch 2, 1889
Simple Experiments in Physics
The SciencesFebruary 23, 1889
Simple Experiments in Physics
TechnologyFebruary 9, 1889
Method of Producing Designs on Wire Cloth
The SciencesFebruary 2, 1889
Simple Experiments in Physics
The SciencesJanuary 12, 1889
Simple Experiments in Physics
The SciencesJanuary 5, 1889
Simple Experiments in Physics
TechnologyOctober 13, 1888
A Pocket Camera
The SciencesAugust 25, 1888
Simple Experiments in Physics
The SciencesAugust 11, 1888
Simple Experiments in Physics