Southern Gothic: in the porches of Abbeville and the tombs of Verona.

Sec. XIII. I believe there is little else to be noted of general laws
of ornament respecting the wall veil. We have next to consider its
concentration in the shaft.

Now the principal beauty of a shaft is its perfect proportion to its
work,--its exact expression of necessary strength. If this has been
truly attained, it will hardly need, in some cases hardly bear, more
decoration than is given to it by its own rounding and taper curvatures;
for, if we cut ornaments in intaglio on its surface, we weaken it; if we
leave them in relief, we overcharge it, and the sweep of the line from
its base to its summit, though deduced in Chapter VIII., from
necessities of construction, is already one of gradated curvature, and
of high decorative value.

Sec. XIV. It is, however, carefully to be noted, that decorations are
admissible on colossal and on diminutive shafts, which are wrong upon
those of middle size. For, when the shaft is enormous, incisions or
sculpture on its sides (unless colossal also), do not materially
interfere with the sweep of its curve, nor diminish the efficiency of
its sustaining mass. And if it be diminutive, its sustaining function is
comparatively of so small importance, the injurious results of failure
so much less, and the relative strength and cohesion of its mass so much
greater, that it may be suffered in the extravagance of ornament or
outline which would be unendurable in a shaft of middle size, and
impossible in one of colossal. Thus, the shafts drawn in Plate XIII., of
the "Seven Lamps," though given as examples of extravagance, are yet
pleasing in the general effect of the arcade they support; being each
some six or seven feet high. But they would have been monstrous, as
well as unsafe, if they had been sixty or seventy.

Sec. XV. Therefore, to determine the general rule for shaft decoration,
we must ascertain the proportions representative of the mean bulk of
shafts: they might easily be calculated from a sufficient number of
examples, but it may perhaps be assumed, for our present general
purpose, that the mean standard would be of some twenty feet in height,
by eight or nine in circumference: then this will be the size on which
decoration is most difficult and dangerous: and shafts become more and
more fit subjects for decoration, as they rise farther above, or fall
farther beneath it, until very small and very vast sha