FROM A PHOTOGRAPH.
Things not generally Known
Familiarly Explained.
CURIOSITIES OF SCIENCE,
Past and Present.
A BOOK FOR OLD AND YOUNG.
By JOHN TIMBS, F.S.A.
AUTHOR OF THINGS NOT GENERALLY KNOWN; AND EDITOR OF THE
YEAR-BOOK OF FACTS.
Model of the Safety-Lamp, made by Sir Humphry Davy’s own hands;
in the possession of the Royal Society.
LONDON:
KENT AND CO. (late BOGUE), FLEET STREET.
MDCCCLVIII.