
The SciencesAugust 26, 1916
Perpetual Motion
The One Phenomenon Which Is Universal and Constant

Perpetual Motion
The One Phenomenon Which Is Universal and Constant

Stereoscopic Drawing
A Training for Accurate Workmanship

How to make an Electroscope
A Comparatively Easy Task When You Know the Way

Atmospheric Electricity
A Review of Recent Researches

A Perpetual Clock
The Ingenuity of James Cox

Calendar for 200 Years
From the Introduction of New Style

A Perpetual Calendar

The Sympalmograph