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| Picture No | 10100348 |
| Date | 1826 |
| Description | Safety Lamps - 1826 |
| Details |
Diagrams showing the workings of Stephenson's Lamp (1 - 4), and Davy's Lamp (5, on the right).
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| Source | Engraving by J.Pass for the Encyclopaedia Londiniensis 1826 |
| Credit | Mary Evans Picture Library |
| Restrictions |
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