214 A Key to Civil Architecture: Or,
£•
J.
d.
One of 5 inches —>
o
12
0
6 inches —>
o
15
0
7 inches —>
l
0
0
7 j inches —
i
1
0
All dimensions between those bear an
exact proportion.
The price of stop-cocks are per pound
o
1
3
Ditto, setting on solder and labour, at
per cock, of an inch and half diameter
o
8
0
Ditto, j inch, at per cock
o
3
0
One inch ditto —
o
5
0
Brass-cocks, of an inch and half dia-
meter, with bosses, solder, and setting
on, per cock —
o
7
0
Ditto, of inch, per cock
o
4
0
Ditto, t inch, per cock
o
3
0
LECTURE LVIII.
* Of Masons Work.
H Aving already said so much of the principlesand properties of building, I hope my readerwill excuse a dissertation on Masonry, as the vo-lume is already stretched beyond the intended size.Notwithstanding, it is a noble art, and bears itsdate ever since the first intent of Jabel, the son ofLamech, who invented the first house of stonesand trees.
Masonry hath in its practice every definitive prin-ciple of geometry, and is not surpassed by any ofthe liberal arts.
The way that masons value their work solid, is,first to consider the cubical measurement of the
stone,