adth of the poor half of a quatrefoil
at the extremity.

One other circumstance is notable also. In good Northern Gothic the
tracery bars are of a constant profile, the same on both sides; and if
the plan of the tracery leaves any interstices so small that there is
not room for the full profile of the tracery bar all round them, those
interstices are entirely closed, the tracery bars being supposed to have
met each other. But in Venice, if an interstice becomes anywhere
inconveniently small, the tracery bar is sacrificed; cut away, or in
some way altered in profile, in order to afford more room for the light,
especially in the early traceries, so that one side of a tracery bar is
often quite different from the other. For instance, in the bars 1 and 2,
Plate XI., from the Frari and St. John and Paul, the uppermost side is
towards a great opening, and there was room for the bevel or slope to
the cusp; but in the other side the opening was too small, and the bar
falls vertically to the cusp. In 5 the uppermost side is to the narrow
aperture, and the lower to the small one; and in fig. 9, from the Casa
Cicogna, the uppermost side is to the apertures of the tracery, the
lowermost to the arches beneath, the great roll following the design of
the tracery; while 13 and 14 are left without the roll at the base of
their cavettos on the uppermost sides, which are turned to narrow
apertures. The earliness of the Casa Cicogna tracery is seen in a moment
by its being moulded on the face only. It is in fact nothing more than a
series of quatrefoiled apertures in the solid wall of the house, with
mouldings on their faces, and magnificent arches of pure pointed fifth
order sustaining them below.

[Illustration: Plate XI.
TRACERY BARS.]

The following are the references to the figures in the plate:

1. Frari.
2. Apse, St. John and Paul.
3. Frari.
4. Ducal Palace, inner court, upper window.
5. Madonna dell'Orto.
6. St. John and Paul.
7. Casa Bernardo.
8. Casa Contarini Fasan.
9. Casa Cicogna.
10. 11. Frari.
12. Murano Palace (see note, p. 265).
PLATE XI. 13. Misericordia.
Vol. III. 14. Palace of the younger Foscari.[70]
15. Casa d'Oro; great single windows.
16. Hotel Danieli.
17. Ducal Palace.
18. Casa Erizzo, on Grand Canal.
1