There is here a breed of large serpents, so tame and gentle that women make pets of them, children take them to bed, they will let you tread on them, have no objection to being squeezed, and will draw milk from the breast like infants. To these facts is probably to be referred the common story about Olympias when she was with child of Alexander; it was doubtless one of these that was her bed-fellow. Well, the two saw these creatures, and bought the finest they could get for a few pence.