Alberti, Leone Battista, Architecture, 1755

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1you have three Rows of Columns, divide the
Space
that is between the firſt Row and the
Roof
into two Parts, and in that Diviſion end
the
ſecond Cornice.
Between the firſt and ſe­
cond
Cornices, let the Wall be preſerved en­
tire
, and adorn it with ſome beautiful Sorts of
Stuc-work
; but in the Wall between the ſe­
cond
and the third Cornices, you muſt make
your
Windows for lighting the whole Structure.
The Windows in Baſiliques muſt be ſet exactly
over
the Intercolumnations, and anſwer regu­
larly
to one another.
The Breadth of theſe
Windows
muſt not be leſs than three Fourths
of
the Intercolumnation, and their Height
may
very conveniently be twice their Breadth.
Their Head-piece may be upon a Line with
the
Top of the Columns, excluſive of the Ca­
pitals
, if theſe Windows be made ſquare; but
if
they are round, their Arch may come al­
moſt
even with the Architrave, and ſo lower
as
you think fit to diminiſh the Arch; but
they
muſt never riſe above the Tops of the
Columns
.
At the Bottom of the Window
muſt
be a Plat-band for a Reſt or Leaning
Place
, with a Cima-recta and an Ovolo.
The
Open
of the Window muſt be grated, tho' not
paned
with ſcantling Tale like thoſe of the
Temple
; but ſtill they muſt have ſomething
to
keep out Wind and Weather.
On the other
Hand
, it is neceſſary to have a free Vent for
the
Air, that the Duſt which is raiſed by the
Peoples
Feet may not injure their Eyes and
Lungs
; and therefore I think nothing does
better
here, than thoſe fine Grates, either of
Braſs
or Lead, with an infinite Number of
ſmall
Holes diſpoſed in a regular Order, al­
moſt
like a Picture, which admit both Light
and
Air to refreſh the Spirits.
The Roof or Ceil­
ing
will be extreamly handſome, if it is compoſ­
ed
of different Pannels nicely jointed together,
with
large Circles, in handſome Proportions,
mixed
with other Compartments and Angles,
and
if thoſe Pannels are ſeparated from each
other
with flying Cornices, with all their due
Members
, and with their Coffits adorned with
carved
Work of Gems in Relief, intermixed
with
beautiful Flowers, either of the Acanthus
or
any other, the Pannels being enriched with
lively
Colours, by the Hand of ſome ingeni­
ous
Painter, which will add a ſingular Grace
to
the whole Work. Pliny tells us of an ex­
traordinary
Cement for laying Gold upon
Wood-work
; which may be made as follows.
Mix together ſix Pounds of Sinoper, or Terra
Pontica
, and ten Pounds of red Oker, mixed
with
two Pounds of Terra Melina or White
Lead
, which muſt be all ground together, and
the
paſt kept full ten Days before it is uſed.
Maſtic ſteept in Linſeed Oil, and mixed with
Helbic
Sinoper or Ruddle well burnt, makes
a
Cement or Glue that will hardly ever come
off
.
The Height of the Door of the Baſilique
muſt
be anſwerable to that of the Iſles.
If
there
be a Portico on the Outſide, by Way of
Veſtibule
, it muſt be of the ſame Height and
Breadth
as the Iſle within.
The Void Cham­
branle
, and other Members of the Door muſt
be
made after the ſame Rules at the Door of
the
Temple; but in a Baſilique the Leaf
ſhould
never be of the Braſs.
But you may
make
it of Cypreſs, Cedar, or any other fine
Wood
, and enrich it with Boſſes of Braſs, con­
triving
the Whole rather for Strength than
Delicacy
: Or if you would have it beautiful
or
noble, do not embeliſh it with any minute
Ornaments
in Imitation of Painting, but adorn
it
with ſome Relieve, not too high raiſed,
that
may make the Work look handſome, and
not
to be too liable to be injured.
Some have
of
late begun to build Baſiliques circular.
In
theſe
the Height in the Middle muſt be equal
to
the Breadth of the whole Structure; but
the
Porticoes, Colonades, Doors and Windows
muſt
be in the ſame Proportions as in the
ſquare
Baſilique.
Of this Subject ſufficient has
been
ſaid.
CHAP. XVI.

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