A bit of a big chunk to translate for free, but since I've got time right now and am in the mood, here you are.
Third. Here belong those who seek knowledge by means of the notory art, about which enough is said in the law, as well as those who seek to discover secrets by means of a crystal, of a nail or of an ivory hilt*, though first consecrated. That can be done only by virgin girls or boys enclosed in a circle, so that a pleasant appearance be not lacking in that execrable deed. The mystery of this inspection, however, is said to be very deceptive. To this category belong those who seek hidden treasures using a divining rod, and most of all those who are commonly called wise men and women (that is, magi and pythonesses), for whose oracles people come from various faraway places, if anyone has lost something or has suffered any harm without knowing who the culprit is. It is surprising that Bishops let these people dare publicly to do such things with impunity.
*The word
capulum has several meanings and it's difficult to tell for sure which one it is here. Since you may know more about the subject than I do, does "hilt" seem likely to you or does any other of the definitions found
here seem likelier?