sacrificed, in consequence of the limited Means at the disposal of the
Artist; resulting in the gradual departure from Realism to the most
severe Conventionalism. The reduction is applied to all parts of the
work. This is a scale of reduction in _Degree_. There are two
Varieties in each degree; and they are marked with italic letters.

It may be shown, in tabular arrangement, thus:--

REALISM.............................................CONVENTIONALISM.

COMPLETE REALISM, in which all parts are represented, in
proper colors, and perfect gradation, with correct light and
shade (see § 10).

FIRST DEGREE OF CONVENTIONALISM, in which all parts are
represented: (a) By a reduced number of Pigments, the other
qualities remaining; (b) By reduction in gradation and
shading to Flat-tints of several pigments (see § 15).

SECOND DEGREE OF CONVENTIONALISM, in which all parts are
represented: (c) By a reduction to Monochrome of color, with
Gradation (_only_) remaining; (d) By reduction to Monochrome
of White and Black, with Gradation (_only_) remaining (see §
16).

THIRD DEGREE OF CONVENTIONALISM, in which all parts are
represented: (e) By reduction to a Flat-tint of one pigment
on a ground of another; (f) By reduction to a Flat-tint of
White on Black, or _vice versa_ (see § 17).