Magic Lantern Slide: Stalactites; Swildon's Hole, Mendips
The photograph shows several stalactites and stalagmites. Minerals such as calcium carbonate dissolve in water as it passes through rocks above the cave. When a drip is exposed to air, either on the cave roof or floor, it solidifies. Very slowly this forms a stalactite (hanging down) or a stalagmite (growing upwards). Scientifically they are called ‘speleothems’.
Object Summary
- Accession Loan No.
- 51/1933/26
- Collection Class
- Social and industrial history
- Material
- glass | paper | photographic emulsion | |
- Common Name
- Magic Lantern Slide: Stalactites; Swildon's Hole, Mendips
- Simple Name
- slide
- Inscription Transcription
- handwritten '51/1933.26' on top edge; printed 'BRITISH ASSOCIATION GEOLOGICAL PHOTOS' on top edge binding strip; printed title and photographer's credit on label on mount
- Production Town
- Production Country
- United Kingdom; United Kingdom
- Production Person Initials
- J H
- Production Person Surname
- British Association for the Advancement of Science Savory
- Production Year Low
- Production Year High
- 1933
