THE WOODEN WALLS OF ATHENS. 155 Acropolis, whose wooden fence they fondly fancied might be the wooden wall which the oracle had meant. Apart from these few the city was de- serted, and Athens had embarked upon the seas. Not only Athens, but all Attica, was left desolate, and in the whole state Xerxes made only five hundred prisoners of war. Onward came the great Persian host, destroying all that could be destroyed on Attic soil, and sending out detachments to ravage other parts of Greece. The towns that submitted were spared. Those that resisted, or whose inhabitants fled, were pillaged and burnt. A body of troops was sent to plunder Delphi, the reputed great wealth of whose temple promised a rich reward. The story of what happened there is a curious one, and well worth relating. The frightened Delphians prepared to fly, but first asked the oracle of Apollo whether they should take with them the sacred treasures or bury them in secret places. The oracle bade them not to touch these treasures, saying that the god would protect his own. With this admonition the people of Delphi fled, sixty only of their number remaining to guard . the holy shrine. These faithful few were soon encouraged by a prodigy. The sacred arms, kept in the temple’s inmost cell, and which no mortal hand dared touch, were seen lying before the temple door, as if Apollo was prepared himself to use them. As the Persians advanced by a rugged path under the steep cliffs of Mount Parnassus, and reached the temple of Athené Pronewa, a dreadful peal of thunder rolled above