| Year | 1999 |
| Date | 07-May |
| Volume | 182 |
| Issue | 4,093 |
| Page | 550 |
| Category | Post Bag |
| Part | |
| Title | Food for thought |
| Author | Dr. B.Figgins |
| Notes | Model solenoid engine, R.Smalley (Smedley?); The wandering balloon: Some further thoughts, G.Alan Turner (Furness?); Correct conditions, John A.Rea; Hyperboloid of revolution, G.Alan Turner |