"After some boasting concerning the absence of poverty, crime, and falsehood in his country and about the pomp and wealth with which he goes forth to war, Prester John then comes to the description of his palace, which is similar to that which the Apostle Thomas built for Gundaphorus, King of India. Its gates of sardonyx mixed with cornucerastis (horn of the horned serpents) prevent the secret introduction of poison; a couch of sapphire keeps John chaste; the square before the palace where judicial duels are held is paved with onyx "in order that the courage of the fighters may be increased by the virtue of the stone." Near this square is a magic mirror which reveals all plots in the provinces subject to Prester John or inadjacent lands.- In some manuscripts...is a description of another palace which before Prester John's birth his father was instructed in a dream to build for his son. One feature of it is that no matter how hungry one maybe on entering it, he always comes out feeling as full as if he had partaken of a sumptuous banquet."