(thought to be the Lemnian Athena) without a helmet on the head--
an exceptional, though not wholly unique, representation in
sculpture in the round.

If this demonstration be thought insufficient, there cannot, at
all events, be much doubt that we have here the copy of an
original of about the middle of the fifth century. The style is
severely simple, as we ought to expect of a religious work of that
period. The virginal face, conceived and wrought with ineffable
refinement, is as far removed from sensual charm as from the
ecstasy of a Madonna. The goddess does not reveal herself as one
who can be "touched with a feeling of our infirmities"; but by the
power of her pure, passionless beauty she sways our minds and
hearts.

The supreme architectural achievement of the Periclean age was the
Parthenon, which crowned the Athenian Acropolis. It appears to
have been begun in 447, and was roofed over and perhaps
substantially finished by 438. Its sculptures were more extensive
than those of any other Greek temple, comprising two pediment-
groups, the whole set of metopes of the exterior frieze, ninety-
two in number, and a continuous frieze of bas-relief, 522 feet 10
inches in total length, surrounding the cella and its vestibules
(cf. Fig. 56). After serving its original purpose for nearly a
thousand years, the building was converted into a Christian church
and then, in the fifteenth century, into a Mohammedan mosque. In
1687 Athens was besieged by the forces of Venice. The Parthenon
was used by the Turks as a powder-magazine, and was consequently
made the target for the enemy's shells. The result was an
explosion, which converted the building into a ruin. Of the