Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. [image-making processes and techniques]
6. [printing and printing processes and techniques]
7. printing techniques
8. printing surface preparation techniques
9. biting techniques

Anotations

Scope note:

The technique of dropping or painting acid onto an aquatint ground to allow localized and controlled biting. To control the acid application, traditionally, a clean brush was coated with saliva, dipped into nitric acid, and brushed onto the ground.