Before revision: Goya ’ s usage of the recently-developed technique of aquatint (i.e., a method of etching a printing plate so that tones similar to watercolor washes can be reproduced) gave pronounced tonal effects and spirited contrast that made them a major achievement in the history of engraving.
After revision: Goya ' s usage of the recently-developed technique of aquatint (i.e., a method of etching a printing plate so that tones similar to watercolor washes can be reproduced) gave pronounced tonal effects and spirited contrast that made them a major achievement in the history of engraving.