[Sidenote: _Lib. 4. Chap. 1._]

The _Channellings_ are so called, because they are as it were
_Demi-Channels_, which descend from the top of the Pillar to the bottom;
they represented the Plaites of the Garments of Women, which the Pillars
resembled.

[Sidenote: _Lib. 4. Chap. 3._]

There are three sorts of _Channellings_, the two first are particular
and proper to the _Dorick Order_; the third is common to the _Ionick_,
_Corinthian_ and _Compound_: The two first are more plain and simple,
and fewer in number than the others.

The most Simple is that which is not hollowed at all, and which hath
only _Pans_ and flat Fronts or Faces.

[Sidenote: _Lib. 3. Chap. 3._]

The other is a little hollowed; to make this hollowness, a Square must
be made, whose Side must be equal to the _Pan_, in which the
_Channelling_ is to be made, and having put one foot of the Compass in
the middle of the Square, make a crooked Line from one Angle of the
_Channelling_ to the other, both these _Channellings_ are made up to the
number of Twenty.

[Sidenote: _Lib. 4. Chap. 1._]

[Sidenote: _Lib. 4. Chap. 4._]

The other Orders have 24, and sometimes 32, when it is design'd to make
the Pillars seem greater than they are; for the Eye judgeth that all
things are greater when they have more and different Marks, which lead
as it were the Sight to more Objects at once.

These _Channellings_ are deeper than those of the _Dorick Order_, and
the depth ought to be just so much, that a Carpenter's Rule being put
into the Cavity, touch with its Angle the bottom, and with its sides the
two Corners of the _Channelling_. _Vitruvius_ hath not taught us what
the Proportions of the _Channelling_ should be, in respect of the
_Fillet_ which makes up the space between the _Channellings_, nor what
the breadth of the _Fillet_ should be, which he hath establish'd for the
rule of the swelling Belly of the Pillar.

The _Piedement_ is composed of a _Tympan_ and _Cornices_; to have the
true height of the _Tympan_, we must divide the breadth which is between
the two ends of the _Cymatium_ of the _Larmier_, or _Drip_ which
supports the _Piedement_, into 9 parts, and give one to the _Tympan_.

The thickness of the _Cornice_ being added to this 9th part, makes up
the height of the whole _Piedement_ or _Fronton_.

The _Tympan_ ought to be Perpendicular upon the _Gorge_ of the Pillar,
the things that are common to all _Cornices_ are, that the _Cornice_ of
the _P