Alberti, Leone Battista, Architecture, 1755

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1and indeed, I do not think them inferior to
thoſe
of Iron.
The Cramps of Braſs and Iron
are
ſaſtened in with Lead: But thoſe of Wood
are
ſufficiently ſecured by their Shape, which
is
made in ſuch Manner, that for Reſemblance,
they
are called Swallow, or Dove-tailed.
The
Cramps
muſt be ſo placed that no Drops of
Rain
may penetrate to them; and it is
Thought
that the Braſs ones are yet more
ſtrengthened
againſt old Age, if in Caſting
they
are mixed with one thirtieth Part of Tin:
They
will be leſs liable to ruſt if they are
anointed
with Pitch, or Oil.
It is affirmed
that
Iron may be ſo tempered by White-lead,
Plaiſter
, and Liquid Pitch, as not to ruſt.
Wooden Cramps done over with Maiden-wax
and
Lees of Oil, will never rot.
I have
known
them pour ſo much Lead upon Cramps,
and
that ſo boyling Hot, that it has burſt the
Stones
.
In ancient Structures we often meet
with
very ſtrong Walls made of nothing but
Rubbiſh
and broken Stuff; theſe are built like
the
Mud-Walls common in Spain and Africa,
by
faſtening on each Side Planks or Hurdles,
inſtead
of Shells, to keep the Stuff together till
it
is dry and ſettled: But herein they differ,
that
the Ancients filled up their Work with
Mortar
liquid, and in a Manner floating;
whereas
, the other only took a clammy Sort
of
Earth which they trod and rammed with
their
Feet, and with Beetles, after having firſt
made
it tractable by thorough wetting and
kneading
.
The Ancients alſo in thoſe rough
Works
of theirs, at the Diſtance of every three
Foot
made a Kind of Band of Pieces of large
Stone
, eſpecially of the ordinary Sort, or at
leaſt
angular; becauſe round Stones, though
they
are very hardy againſt all Sorts of Injuries,
yet
if they are not ſurrounded with ſtrong Sup­
ports
, are very unfaithful in any Wall.
In
theſe
other Works, that is to ſay, in the African
Buildings
of Earth, they mixed with their Clay
the
Spaniſh-Broom, or Sea-Bullruſh, which
made
a Stuff admirably good for Working,
and
which remained unhurt either by Wind or
Weather
.
In Pliny's Time there was to be
ſeen
upon the Ridges of Mountains ſeveral
little
Towers for viewing the Country built of
Earth
, which had endured quite from the Days
of
Hanibal. We make this Sort of Cruſt
(which is a fitter Name for it than Shell) with
Hurdles
and Mats, made of Reeds not freſh
gathered
; a Work indeed not very magni­
ficent
, but generally uſed by the Old Plebeian
Romans
.
They rough Caſt the Hurdles over
with
Clay, beat up for three Days running
with
the Reeds, and then (as we ſaid before)
cloath
it with Mortar, or Plaiſter of Paris,
which
they afterwards adorn with Painting
and
Statues.
If you mix your Plaiſter up with
a
third Part of broken Tile, or Brick pounded,
it
will be the leſs injured by wet: If you mix
it
with Lime, it will be the Stronger: But in
damp
Places, or ſuch as are expoſed to Cold and
Froſt
, Plaiſter of Paris is very unſerviceable.
I will now, by Way of Epilogue, give you a
Law
of very great Antiquity among Arch­
itects
, which in my Opinion ought no leſs to
be
obſerved than the Anſwers of Oracles: And
it
is this.
Make your Foundation as ſtrong as
poſſible
: Let the Superſtructure lie exactly
plum
to its Centre: Fortify the Corners and
Ribs
of the Wall from the Bottom to the Top
with
the largeſt and the ſtrongeſt Stones: Soak
your
Lime well: Do not uſe your Stone till
it
is thoroughly watered: Set the hardeſt Sort
to
that Side which is moſt expoſed to Injuries:
Raiſe
your Wall exactly by the Square, Level
and
Plum-line: Let the Middle of the upper
Stone
lie directly upon the Meeting of the two
below
it: Lay the entire Stones in the Courſes,
and
fill up the Middle with the broken Pieces:
Bind
the inward and outſide Shells to one
another
by frequent Croſs or Band-ſtones.
Let
this
ſuffice with Relation to the Wall; we
come
now to the Covering.
But I will not
paſs
over one Thing which I find the Ancients
obſerved
very religiouſly.
There are ſome
Things
in Nature which are endued with
Properties
by no means to be neglected; par­
ticularly
, that the Lawrel-tree, the Eagle, and
the
Sea-calf, are never to be touched by
Lightening
.
There are ſome therefore who
ſuppoſe
that if theſe are incloſed in the Wall,
the
Lightening will never hurt it.
This I take
to
be juſt as probable as another wonderful
Thing
which we are told, that the Land-toad,
or
Rudduck, if ſhut up in an earthen Pot,
and
burned in a Field, will drive away the
Birds
from devouring the Seeds; and that the
Tree
Oſtrys, or Oſtrya brought into a Houſe,
will
obſtruct a Woman's Delivery; and that
the
Leaves of the Lesbian Oemony kept but
under
the Roof, will give a Flux of the Belly
and
an Evacuation that will certainly prove
Mortal
.
Let us now return to our Subject,
for
the better underſtanding of which, it will
be
proper to look back to what we have
formerly
ſaid of the Lines of Building

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