elevations on the same roof, and various forms, as if the architect had terminated the summits of the several walls and partitions at the dictates of a wayward fancy rather than a settled plan. In some cases a step—in others a flight of steps—formed the communication between one part of a roof and another, while division-walls varying from a foot to two yards in height, cut it up into irregular squares and triangles. Such roofs are eminently fitted for the game of "hide and go seek," to which, doubtless, they have been applied more or less since the days of Abraham.
Issuing on the terrace of his house, then, Bacri pointed out to Mariano, by the light of the moon, which was slowly descending to its bed in the Sahel hills, that the roof of his neighbour's house could be easily reached by a single step.
"You will cross over this roof," he said, taking a ring from his finger and placing it on that of his slave, "and be sure that you tread with care until you come to the other edge of it, where you will be able to place yourself in the shadow of a chimney until a cloud covers the moon. My neighbour is not a friend, therefore tread like a cat. Attend well to my directions now, and obey them implicitly. You require no arms. Whatever happens to you, offer no resistance, as that will only insure death. When the moon is clouded leap to the
