The SciencesJuly 17, 1915
A Radio Generator for Amateurs
Instructions for Fitting Up a Powerful and Efficient Source of Current
Stories by Frederick E. Ward
The SciencesMay 30, 1914
A Variable Condenser, Construction of an Oxygen Carbon Remover
The SciencesMay 23, 1914
Setting a Watch, Our Front-cover Illustration, and more
TechnologyOctober 26, 1912
An Electric Stove
The SciencesOctober 5, 1912
Home-made Oil Filters, Workshop Notes and more
TechnologyApril 27, 1912
A Bell-ringing Transformer
TechnologyFebruary 3, 1912
A Simple Resister
EnvironmentOctober 21, 1911
Small Isolated Electric Power Plants
Some Practical Suggestions on Building Them
TechnologyMarch 5, 1910
Electric Incubators and Brooders
The SciencesOctober 23, 1909
Alternating Current Experiments
TechnologyAugust 14, 1909
An Electrolytic Rectifier for Charging Ignition Batteries
The SciencesJune 12, 1909
A Simple Medical Coil
TechnologyMarch 13, 1909
An Electrical Fireless Cooker
The SciencesMay 9, 1908
A Simple Alternating-Current Motor
How it Can be Built at Home
The SciencesJuly 6, 1907
An Electrolytic Rectifier for Amateurs
How it Can be Made at Home