She then told him the secret; which consisted in the preparation of a certain herb boiled with ivy and rue over a fire of cypress-wood, and squeezed into a cup by hands that had never done harm. The juice thus obtained, if applied fresh every month, had the virtue of rendering bodies invulnerable. Isabella said she had seen the herb in the neighbourhood, as she came along, and that she would not only make the preparation forth-with, but let its effects be proved on her own person. She only stipulated, that the receiver of the gift should swear not to offend her purity in deed or word.
The fierce infidel took the oath immediately. It delighted him to think that he should be enabled to have his fill of war and slaughter for nothing; and the oath was the more easy to him, inasmuch as he had no intention of keeping it.
The poor Isabella went into the fields to look for her miraculous herb, still, however, attended by the Saracen, who would not let her go out of his sight. She soon found it; and then going with him into his house, passed the rest of the day and the whole night in preparing the mixture with busy solemnity,--Rodomont always remaining with her.
The room became so hot and close with the fire of cypress-wood, that the Saracen, contrary to his law and indeed to his habits, indulged himself in drinking; and the consequence was, that, as soon as it was morning, Isabella lost no time in proving to him the success of her operations. "Now," she said, "you shall be convinced how much in earnest I have been. You shall see all the virtue of this blessed preparation. I have only to bathe myself thus, over the head and neck, and if you then strike me with all your force, as though you intended to cut off my head,--which you must do in good earnest,--you will see the wonderful result."
With a glad and rejoicing countenance the paragon of virtue held forth her neck to the sword; and the bestial pagan, giving way to his natural violence, and heated perhaps beyond all thought of a suspicion with his wine, dealt it so fierce a blow, that the head leaped from the shoulders.
Thrice it bounded on the ground where it fell, and a clear voice was heard to come out of it, calling the name of "Zerbino," doubtless in joy of the rare way which its owner had found of escaping from the Saracen.