CHAPTER 2.XXIV.
A letter which a messenger brought to Pantagruel from a lady of Paris, together with the exposition of a posy written in a gold ring.
When Pantagruel had read the superscription he was much amazed, and therefore demanded of the said messenger the name of her that had sent it.
Then opened he the letter, and found nothing written in it, nor otherwise enclosed, but only a gold ring, with a square table diamond.

Wondering at this, he called Panurge to him, and showed him the case.

Whereupon Panurge told him that the leaf of paper was written upon, but with such cunning and artifice that no man could see the writing at the first sight.

Therefore, to find it out, he set it by the fire to see if it was made with sal ammoniac soaked in water.

Then put he it into the water, to see if the letter was written with the juice of tithymalle.