A round cupola terminates this building, through which the light shines
in on every side, although two male statues in togas occupy the centre
of it.

To view the height at which these figures are placed, one would suppose
they were safe from the attacks of the mischievous or the curious;
nevertheless, they did not escape, for, many years ago, during the
night, their heads were taken off, and those that replaced them reflect
little credit on the taste or skill of the modern sculptor who executed
the task.

On the architrave of the entablature of the first stage, and on the
north front, is the following inscription:--

SEX. L. M. JVLIEI. C.F. PARENTIBUS. SVEIS.

Various are the opinions given by the writers who have noticed this
monument as to the cause for which, and person, or persons for whom, it
was erected. Some maintain that the triumphal arch from its vicinity
has a relation to the mausoleum, while others assert them to have been
built at different epochs.

The inscription has only served to base the different hypotheses of
antiquaries, among which that of the Abbé Barthélemy is considered the
most probable; namely, that in the three first words are found two
initials, which he considers may be rendered as follows:--

SEXTUS · LUCIVS · MARCVS;