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).
ULTIMATE CONVENTIONALISM, in which all parts are
represented; (g) By reduction to Outline of several
pigments; (h) Reduction to Outline of one pigment (see §18).
Inasmuch as Realism ceases so soon as any reduction in the three
qualities (of color, gradation, and shadow) is introduced; and the
treatment becomes more Conventional in each method after the
first--these are classified under the heading of CONVENTIONALISM.
[There is an analogous scale of reduction in Form, from the
Complete-relief of an isolated Statue to the Flatness of a
Floor-plate; but this does not belong to the present subject.]
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