| Year | 1919 |
| Date | 03-Jul |
| Volume | 41 |
| Issue | 949 |
| Page | 18 |
| Category | General |
| Part | |
| Title | Some Interesting Experiments in Mechanics |
| Author | V.E.Johnson |
| Notes | 1. A Small Force Overcoming a Greater.A curious experiment in mechanics. 2. Two Pulley Experiments. Simple & differential pulleys. 3. A Lesson in Picture Hanging |