Salmon, William: Polygraphice; Or, The Art of Drawing, Engraving, Etching, Limning, Painting, Washing, Varnishing, Colouring and Dying: In Three Books ... (London, 1672)

Os Drawing* i$
the body , for the legs , Sic.) onely
with this disference that , (as the one
part may appear sully to the eye, or the
other may turn away either in part, or
in whole.,- or be (een sidewayj it be made
lb much less than the other, by Co much
as it turns away from the sight.
V I. As you oblerve a just proporti-
on in bignesi, so also in length, that as
every opposite part be os equal length,
so that each part may not be too long
one for another, but according to the
proposed magnitude: And in this cafe
that is the body be awry, or any* ways
hid,tho(e parts may {horten according-
ly, to what is out os sight.
VI I. Lastly, Observe the just di-
stance os one thing srom another , sor
by that means you will be more exa^
in your draught 5 and in ftiort time,
persectly imitate your pattern or na-
ture.