Salmon, William: Polygraphice: Or, The Arts of Drawing, Engraving, Etching, Limning, Painting, Washing, Varnishing, Gilding, Colouring, Dying, Beautifying and Perfuming: In Four Books ... To which is added A Discourse of Perspective and Chiromancy (London, 1675)

Chap. 13. A siffure in general* 15 j

CHAP. X11L
Of a Pitfure in general,
1. IN every Pi&ure there are always fouiprincipal
1 considerations : to Wit, I. Invention* %. Pro-
portion* 3. Colour, and 4. Lise.
II. Invention must be free, and ssow from a general
knowledge os Antiquities, fiistory, Poetical Fictions,
Geometrical conclusions, and Optical considerations5
according to its Situation or Aipeft, either near or far
oss.
III. And this Invention mart express proper and fit
things, agreeing to the Circumstances of lime-, Place7
Matter, and Ptrson i and having respect to the modes
of habits belonging to the Country or People whether
Antient or Modern.
IV. Proportion, Analogy, or Symmetry (which you
pleasejin that which limits each part to its proper big-
ness, in respedt to the whole.
Wbatsoever dissers srom this recedes srom beauty, an&
may be called Deformity.
V. This Proportion is called by Artists the designing
lines s which are first drawn before the whole is
painted,
"these proportions or lineal designs, draughts, and
jcotcbes, may be colled MiBmrc, which being well done, Jkerv
not only the jhape, but also the intent: In lines only, we
may draw the proportion of a Blacky More-> and juch as
(hall be like him : Nors this Skill proceeds srom the very
highe{\ principles os Art.
VI. Colour is that which makes the Picture resem-'
L 2, ble