TechnologyDecember 24, 1881
Dynamic Electricity
The Depolarization of Electrodes
Stories by Geo. M. Hopkins
TechnologyDecember 3, 1881
Electricity by Magnetic Induction
The SciencesMay 28, 1881
Simple Holtz Electrical Machine.—Curative Applications of Static Electricity
The SciencesApril 23, 1881
Bursting of Fly-Wheels
The SciencesApril 2, 1881
Tyndall's Experiment on Radiant Heat
TechnologyMarch 19, 1881
New Telephone Transmitter
TechnologyMay 8, 1880
Simple Telephone Transmitter
The SciencesFebruary 7, 1880
On the Crystallization of Canada Balsam
TechnologyNovember 1, 1879
Modification of the Reynier and Werdermann Electric Lamp
The SciencesOctober 4, 1879
The Induction Balance and Sonometer
TechnologyAugust 16, 1879
New Magnetometer
TechnologyApril 5, 1879
New Acoustic Apparatus
The SciencesFebruary 15, 1879
Some Modifications of the Microphone and Telephone
The SciencesFebruary 1, 1879
How to make a Dynamo-Electric Machine, with Working Drawings One-Half Actual Size
The SciencesJanuary 18, 1879
Galvanic Batteries
TechnologyJanuary 18, 1879
Easily Made Physical Apparatus
The SciencesJanuary 11, 1879
Galvanic Batteries
TechnologyNovember 16, 1878
Some Modifications of the Microphone and Telephone
The SciencesNovember 9, 1878
Simple Electric Light Apparatus
TechnologySeptember 28, 1878
Simple Electric Light Apparatus
TechnologyAugust 17, 1878
Electrical Indicator for Showing the Rotation of the Earth
TechnologyJune 1, 1878
An Electrical Gyroscope
The SciencesApril 27, 1878
A Water Lens Microscope
The SciencesFebruary 23, 1878
Ornaments for the Mantel and the Wall