Energy, necessary to repose, ii. 66; purity a type of, ii. 76; how expressed by purity of matter, ii. 79; expression of, in plants, a source of pleasure, ii. 92.

English art culminated in the 13th century, iv. 350.

Engraving, influence of, i. 101; system of landscape, i. 260, v. [38], [98], [328].

Evil, the indisputable fact, iv. 342; captivity to, v. [217], [285]; contest with, v. [285]; conquered, v. [285]; recognition and conquest of, essential to highest art, v. [205]-209, 217; war with, v. [231].

Exaggeration, laws and limits of, ii. 208-210; necessary on a diminished scale, ii. 208.

Excellence, meaning of the term, i. 14, 15 (note); in language, what necessary to, i. 9; the highest, cannot exist without obscurity, iv. 61; passing public opinion no criterion of, i. 1, 2; technical, superseding expression, iii. 29.

Execution, meaning of the term, i. 36; three vices of, ii. 188 (note); qualities of, i. 36, 37, 39 (note); dependent upon knowledge of truth, i. 36; essential to drawing of water, i. 350; swift, details best given by, i. 202; legitimate sources of pleasures in, i. 36, 38; mystery of, necessary in rendering space of nature, i. 203; rude, when the source of noble pleasure, ii. 82 (note); determinate, v. [37], [38].

Expression, three distinct schools of—Great, Pseudo, and Grotesque-Expressional, iv. 385; subtle, how reached, iv. 55; influence of moral in animal form, ii. 97, 98; perfect, never got without color, iv. 54 (note); unison of expressional, with technical power, where found, iii. 29; superseded by technical excellence, iii. 29; of inspiration, ii. 214; of superhuman character, how attained, ii. 213.

Eye, focus of, truth of space dependent on, i. 186-190; what seen by the cultivated, iv. 71; what seen by the uncultivated, iv. 71; when necessary to change focus of, i. 186, 355; keenness of an artist’s, how tested, iv. 188.

Faculty Theoretic, definition of, ii. 12, 18.