The fourfold walls in breathing statues grace.

Addison in his Letter from Italy had called the Roman statues "breathing rocks."

[30] Addison's Letter from Italy:

Or teach their animated rocks to live.
And emperors in Parian marble frown.

[31] Milton, Par. Lost, i. 714:

Doric pillars overlaid
With golden architrave, nor did there want
Cornice or frieze, with bossy sculptures graven.—Wakefield.

[32] Dryden, Ovid's Met. book xii.:

An ample goblet stood of antique mould
And rough with figures of the rising gold.

Dryden, Æn. viii. 830:

And Roman triumphs rising on the gold.