Iron Forge at Rouillon, Belgium, c 18th century.

Interior of an iron mine showing the mode of raising ore, Sweden, 1822.

Humerus of an adult human, and broken foot bones, Egyptian, 4000 BC- AD 200.

Iron lock, key and bolt, English, 18th century.

Iron lock, key and bolt, English, 18th century.

Specimen of crown glas showing method of cutting, c 19th century.

Specimens of volcanic material, c 1768.

Specimens of tufa, c 1770.

The climax of a total solar eclipse, 1851.

Solar eclipse, 28 July 1851.

'An iron forge at Tintern Monmouthshire', Wales, 19th century.

'An iron work at Downton, Herefordshire', 19th century.