The upright of the work, as when entire, in which the perpendicular
stones of the outward circle, are countersigned with the Letter _I_, as
in the groundplot.
_N_
The _Architrave_ lying round about upon them, being mortaised into
them, and joynted in the middle of each of the perpendicular stones.
This _Architrave_ is three foot and an half broad, and two foot and an
half high.
_O_
The _Architrave_ lying on the top of the great stones of the _Hexagon_,
and mortaised also into them, sixteen foot long, three foot nine inches
broad, and three foot four inches high. This _Architrave_ continuing
onely from stone to stone, left betwixt every two and two, a void space
free to the Air uncovered. For, if they had been continued throughout
the whole _Hexagon_, then necessarily there must have been two tenons
upon each of the said stones, as those of the outward circle had, but
being disposed as aforesaid, that one, which was in the middle, and yet
remains apparent, was sufficient for the thing intended.