[160]. For more detail, see ‘The True Principles of Beauty in Art,’ p. 446 et. seq.

[161]. The Etruscan and Roman origin of the circular temple is now known to be erroneous, as remains of large circular temples have been discovered at Epidaurus and Olympia.

[162]. Even in more modern times I know of no building showing a trace of these forms except the tomb of Theodoric at Ravenna. This, however, is Etruscan both in form and detail, as will be seen farther on.

[163]. Plin. ‘Hist.’ xxxvi. 13.

[164]. A diagram is given in ‘The True Principles of Beauty in Art’ p. 459, which shows at least that there is no difficulty in designing a monument in perfect accordance with the text. Whether the latter is to be depended upon or not is another matter.

[165]. These dimensions, with all those that follow, unless otherwise specified, are taken from Taylor and Cresy’s ‘Architectural Antiquities of Rome,’ London, 1821. They seem more to be depended upon than any others I am acquainted with.

[166]. These two temples, like almost all the others of Rome, have recently been renamed by the Roman or rather German antiquaries. The Jupiter Tonans is now the Temple of Saturn, and the Jupiter Stator is decreed to have been the Temple of Castor and Pollux. The names by which they are currently known has been adhered to, as the architecture is of more importance here than the archæology.

[167]. Laborde, ‘Monumens de la France,’ vol. i. pls. xxix. xxx. p. 68.

[168]. IMP. CÆS. M. AVRELIVS ANTONINVS PIVS FELIX AVG. TRIB. POTEST V. COS. PROCOS. PANTHEVM VETVSTATE CORRVPTVM CVM OMNI CVLTV RESTITVERVNT. Isabelle, ‘Édifices Circulaires,’ p. 37, pl. xii.

[169]. When the first edition of this work was written I believed the rotunda to have been added to the portico by Severus; and if this were so it would get over many of the difficulties arising from its size and the character of its brickwork. My personal examination, however, has forced me very unwillingly to give up this hypothesis. It certainly is, however, very astonishing that such a vault should have been attempted at so early an age.