_Lady Petre's Monument_ (Vol. iv., p. 22.).--Will the following passage,
from Murray's _Handbook to Southern Germany_, throw any light on the
meaning of the initials at the foot of Lady Petre's monument, as alluded
to in your Number of July 12, 1851?
"At the extremity of the right-hand aisle of the cathedral of St.
Stephen, is the marble monument of the Emperor Frederick III.,
ornamented with 240 figures and 40 coats of arms, carved by a
sculptor of Strasburg, Nicholas Lerch. On a scroll twisted around
the sceptre in the hand of the effigy, is seen Frederick's device
or motto, the letters A. E. I. O. U., supposed to be the initials
of the words Alles Erdreich Ist Oesterreich Unterthan; or, in
Latin, Austriæ Est Imperare Orbis Universi."--Murray's _Handbook
to Southern Germany_, pp. 135, 136.