TechnologyJuly 12, 1913
A Seconds Pendulum
Stories by C. C. Kiplinger
The SciencesMarch 22, 1913
Goniometer for Microscopes
TechnologyAugust 24, 1912
A Simple Microphone and Reproducer
The SciencesJune 8, 1912
The Laboratory
Some Suggestions for Home Experiment
The SciencesApril 27, 1912
The Laboratory
Some Suggestions for Home Experiment
TechnologyJuly 29, 1911
Simple Electric Furnace