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FOURTH BOOK.

Tun walls In the outward part arc os pcpcrino, and within the temple there are other
wallsos baked (lone, that they might he the better able to support the vault, which was
nude with beautisul 1'quarcs wrought with stucco.
Th r.sE walls are coated with marble and there were niches and columns round them
sor ornament.
Almost a whole flank os this temple is to be seen ; I have however endeavoured to rc-
present it whole, by means of what I could collect from its ruins, and srom the doctrine
of Vitruvius: and therefore have made sive plates os it.
Plate 37. In die first I have designed the plan.



Pktc 38
Plate 39
Plate ^0
Plate 41

In the second the elevation os the front forwards.
In the third one part os the side without.
In the fourth one part os the side os the portico, and of the temple within.
In the fifth arc the ornaments of the portico.

A, tbebase.
B, tbe capital.
C, tbe architrave.
D, the frize,
E, tbe cornice.
F, thesniall ccrr.h:, vponwbich tie !'.:-

tues ivere placed.
G, tbe JI//J of tbe architrave between the
columns.
H, tbe architrave in the inward part of tbe
portico, which Jupports tbe vault.

CHAP. XVI.

Of the Baptisterium of C

ONSTANTINE.

U

THE designs that sollow are os the Baptislerium os Consta n t i n s, which is at St.
Giovanni Laterano. This temple, in my opinion, is modern work, made os the ruins
of antient edifices ; but because it is a beautiful invention, and has the ornaments well carv'd,
and with various manners os intaglia's, of which an architect may upon levcral occasions make
use; it appeared to me fit to be placed among the antient, and the rather, because it is by every
body esteemed to be so.
The columns are os porphyry, and of the Compostte order. The base is composed of
Attic and of the Ionic; having two babooes us Attic, and the two cavettoes of the
Ionic. But instead of two astragals or tondino's, which are made between the CWttto's
in the Ionic, this has only one, which occupies that space which the two lliould take up.
All these members are beautifully wrought, and have mod beautiful intaglia's. Upon
the bases of the loggia there arc soliages, that support the Quits os the columns; which arc
worthy of notice. And the judgment of that architect is to be prailed, who understood lb
well to accommodate them (the (hafts of the columns not having as much length as was re-
quisite) without taking from the work any part os its beauty and majeiiy.
J have also made use of this invention in the columns that I have put sor on ornament
to the door of the church os S. Giorgio Maggiore in Venice, which did not hold out in
length as sar as was rtqtiisite ; and are of so beautiful marble, that they could not well be
left out os the work. The capital is composed of the Ionic and Corinthian, the method
os which his been mentioned in the first book, and they have acanthus' leaves.

Tim; architrave is beautisully carved,
fusarolo, and over it a half ovolo.

Its cimacium has, instead of the gola rei

The srize is plain. The cornice lias two gola diritta's, the one upon the other, a thing
very scldom secn, that is, that two members os the ianic loit ihuuld be placed the one upon
the

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