"There, that is why fish has become the watchword of the Christians," answered Chilo, proudly.
A moment of silence followed. But there was something so striking in the conclusions of the Greek that the two friends could not guard themselves from amazement.
"Vinicius, art thou not mistaken?" asked Petronius. "Did Lygia really draw a fish for thee?"
"By all the infernal gods, one might go mad!" cried the young man, with excitement. "If she had drawn a bird for me, I should have said a bird."