1.

Desiring to reply to the letter which I received from you through our holy brother, my co-bishop Boniface, I have sought for it, but have not found it. I have recalled to mind, however, that you asked me in that letter how the magicians of Pharaoh could, after all the water of Egypt had been turned into blood, find any with which to imitate the miracle. There are two ways in which the question is commonly answered: either that it was possible for water to have been brought from the sea, or, which is more credible, that these plagues were not inflicted on the district in which the children of Israel were; for the clear, express statements to this effect in some parts of that scriptural narrative entitle us to assume this in places where the statement is omitted.