no small value to us by-and-by. The 35th
carries the angle of the palace, and is 6 ,, 0 round. The 47th, which
comes above the 24th and carries the party wall of the Sala del Gran
Consiglio, is strengthened by a pilaster; and the 51st, which comes over
the 26th, is 5 ,, 4-1/2 round, or nearly the same as the 29th; it
carries the party wall of the Sala del Scrutinio; a small room
containing part of St. Mark's library, coming between the two saloons;
a room which, in remembrances of the help I have received in all my
inquiries from the kindness and intelligence of its usual occupant, I
shall never easily distinguish otherwise than as "Mr. Lorenzi's."[104]

I may as well connect with these notes respecting the arcades of the
Ducal Palace, those which refer to Plate XIV., which represents one of
its spandrils. Every spandril of the lower arcade was intended to have
been occupied by an ornament resembling the one given in that plate. The
mass of the building being of Istrian stone, a depth of about two inches
is left within the mouldings of the arches, rough hewn, to receive the
slabs of fine marble composing the patterns. I cannot say whether the
design was ever completed, or the marbles have been since removed, but
there are now only two spandrils retaining their fillings, and vestiges
of them in a third. The two complete spandrils are on the sea facade,
above the 3rd and 10th capitals (_vide_ method of numbering, Chap. I.,
page 30); that is to say, connecting the 2nd arch with the 3rd, and the
9th with the 10th. The latter is the one given in Plate XIV. The white
portions of it are all white marble, the dental band surrounding the
circle is in coarse sugary marble, which I believe to be Greek, and
never found in Venice to my recollection, except in work at least
anterior to the fifteenth century. The shaded fields charged with the
three white triangles are of red Verona marble; the inner disc is green
serpentine, and the dark pieces of the radiating leaves are grey marble.
The three triangles are equilateral. The two uppermost are 1 ,, 5 each
side, and the lower 1 ,, 2.

The extreme diameter of the circle is 3 ,, 10-1/2; its field is slightly
raised above the red marbles, as shown in the section at A, on the left.
A _a_ is part of the red marble field; _a b_ the section of the dentil
moulding let into it; _b c_ the entire breadth of the rayed zone,
represented on the other side of the spandril by the line C _f_; _c d_
i