then, where the Roof is to be flat, the Height <lb/>
mu&longs;t be equal to the Breadth; where the Roof <lb/>
is to be vaulted, a third Part of that Breadth <lb/>
more mu&longs;t be added. </s> <s>This may &longs;erve for mid&shy;<lb/>
dling Buildings: In very large ones, if they are <lb/>
to have a vaulted Roof, the whole Height mu&longs;t <lb/>
be one whole Breadth, with the Addition of <lb/>
one fourth Part; but if the Roof is to be flat <lb/>
it mu&longs;t be one whole Breadth and two fifths. <lb/>
</s> <s>If the Length of the Platform be three Times its <lb/>
Breadth, and the Roof is to be flat, let the <lb/>
Height be one whole Breath and three quarters, <lb/>
if the Roof is to be vaulted, let the Height be <lb/>
one whole Breadth and an half. </s> <s>If the Length <lb/>
of the Platform be four Times its Breadth, and <lb/>
the Roof is to be vaulted, let the Height be <lb/>
half its Length; and if the Roof is to be flat, <lb/>
divide the Breadth into four Parts, and give <lb/>
one and three quarters of tho&longs;e Parts to the <lb/>
Height. </s> <s>If the Length be five Times the <lb/>
Breadth, make the Height the &longs;ame as where <lb/>
it is four Times, only with the Addition of <lb/>
one &longs;ixth Part of that Height; and if it is &longs;ix <lb/>
Times the Breadth, make it as before, adding <lb/>
not a &longs;ixth as in the former, but a fifth. </s> <s>If <lb/>
the Platform be an exact Square with equal <lb/>
Sides, and the Roof is to be vaulted, let the <lb/>
Height exceed the Breadth as in the Platform <lb/>
of three Breadths; but if the Roof is to be flat, <lb/>
it mu&longs;t not exceed &longs;o much, and in the larger <lb/>
Platforms, it mu&longs;t not exceed this Breadth <lb/>
above one fourth Part. </s> <s>In tho&longs;e Platforms <lb/>
where the Length exceeds the Breadth only <lb/>
one ninth Part, let the Height be exceeded by <lb/>
the Breadth one ninth Part too; but this mu&longs;t <lb/>
be only in a flat Roof. </s> <s>When the Length is <lb/>
to be one whole Breadth and a third, let the <lb/>
Height be one whole Breadth and a &longs;ixth in flat <lb/>
Roofs; but in vaulted ones, let the Height be <lb/>
one whole Breadth and a &longs;ixth of the Length. <lb/>
</s> <s>When the Length is one Breadth and an Half, <lb/>
let the Height be one Breadth and a &longs;eventh of <lb/>
that Breadth, in a flat Roof; but in a vaulted <lb/>
one, let the Height be one Breadth, and a <lb/>
&longs;eventh of the Length of the Platform. </s> <s>If the <lb/>
Platform con&longs;i&longs;t of Lines whereof one is as <lb/>
&longs;even, and the other as five, or the Length be <lb/>
as five and the Breadth as three, or the like, <lb/>
according as the Nece&longs;&longs;ity of the Place, or Va&shy;<lb/>
riety of Invention, or the Nature of the Orna&shy;<lb/>
ments requires; add tho&longs;e two Lines together, <lb/>
and allow one half of the Amount to the <lb/>
Height. </s> <s>I mu&longs;t not here omit one Precaution, <lb/>
namely, that the Ve&longs;tibule ought never to be <lb/>
above twice as long as broad, and the Apart&shy;<lb/>
ments never le&longs;s broad than two thirds of their <lb/>
Length. </s> <s>The Platforms which are in Length <lb/>
three or four Times their Breadth or more, be&shy;<lb/>
long only to Porticoes, and even they ought <lb/>
never to be above &longs;ix Times their Breadth. </s> <s>In <lb/>
the Wall Apertures are to be left both for <lb/>
Windows and Doors. </s> <s>If the Window is broke <lb/>
in the Wall of the Breadth-line of the Plat&shy;<lb/>
form, which in its very Nature is &longs;horter than <lb/>
that of the Length, then there mu&longs;t be only a <lb/>
&longs;ingle one; and this Window it&longs;elf mu&longs;t either <lb/>
be higher than it is broad, or el&longs;e on the con&shy;<lb/>
trary broader than it is high, which la&longs;t Sort is <lb/>
called a reclining Window. </s> <s>If the Breadth is <lb/>
to be like that of the Door, &longs;omewhat le&longs;s than <lb/>
the Length; then let the Breadth of the clear <lb/>
Opening be not more than a third, nor le&longs;s than <lb/>
a fourth Part of the In&longs;ide of the Wall in which <lb/>
it is made; and let the Re&longs;t or Bottom of the <lb/>
Window be in Height from the Floor not more <lb/>
than four ninths of the whole Height, nor le&longs;s <lb/>
than two. </s> <s>The Height of the clear Open of <lb/>
the Window mu&longs;t be one third more than its <lb/>
Breadth; and this is the Proportion, if the Win&shy;<lb/>
dow is to be higher than broad; but if the <lb/>
Window is to be broader then high, than of <lb/>
the whole in&longs;ide Length of the Wall in which <lb/>
it is made, you mu&longs;t not allow the Open of the <lb/>
Window le&longs;s than one half, nor more than two <lb/>
thirds. </s> <s>In the &longs;ame Manner its Height too <lb/>
mu&longs;t be made either half its Breadth, or two <lb/>
thirds, only it mu&longs;t have two little Columns to <lb/>
&longs;upport the Tran&longs;om. </s> <s>If you are to make <lb/>
Windows in the longer Side, there mu&longs;t be <lb/>
more of them, and they &longs;hould be in an odd <lb/>
Number. </s> <s>I find the Ancients were be&longs;t plea&longs;ed <lb/>
with three, which were made in the following <lb/>
Manner: The whole longe&longs;t Side of the Wall <lb/>
mu&longs;t be divided into never more than &longs;even, nor <lb/>
le&longs;s than five Parts, of which taking three, in <lb/>
each of them make a Window, making the <lb/>
Height of the Open one whole Breadth and <lb/>
three quarters, or one Breadth and four fifths. <lb/>
</s> <s>If you would make your Windows more nu&shy;<lb/>
merous; as they will then partake of the Na&shy;<lb/>
ture of a Portico, you may borrow the Dimen&shy;<lb/>
&longs;ions of your Openings from the Rules of the <lb/>
Portico it&longs;elf, and e&longs;pecially from that of the <lb/>
Theatre, as we laid them down in their proper <lb/>
Place. </s> <s>The Doors mu&longs;t be made after the <lb/>
Manner of tho&longs;e which we de&longs;cribed for the <lb/>
Court and Council-chamber. </s> <s>Let the Dre&longs;s of <lb/>
the Windows be <emph type="italics"/>Corinthian;<emph.end type="italics"/> of the principal <lb/>
Door, <emph type="italics"/>Ionic;<emph.end type="italics"/> of the Doors of the Halls and <lb/>
Chambers, <emph type="italics"/>Doric.<emph.end type="italics"/></s><s> And thus much of the Lines, <lb/>
as far as they relate to this pre&longs;ent Purpo&longs;e.</s></p>