Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by origin]
6. biological material
7. animal material
8. processed animal material
9. gut (animal material)

Anotations

Scope note:

Prepared outside membrane of the large intestine of cattle used primarily to separate individual gold leaves during the final stages of preparing gold leaf. Occasionally used for the repair of skin artifacts and as the moisture-sensitive element in hygrometers.