Page 237 - Petru Russo | The 100 Days of Decameron by Giovanni Boccaccio

Etching is traditionally the process of using strong acid to cut into the
unprotected parts of a metal surface to create a design in intaglio in the
metal creating sunken areas which hold the ink. (Petru Russo in 13 / 04 /
1986 intaglio printmaking the 100 Days of Decameron on H. Fleury printing
press manufactured in Paris in the 1880s.)