28. Avicen, or Avicenna, was among the distinguished
physicians of the Arabian school in the eleventh century, and
very popular in the Middle Ages. His great work was called
“Canon Medicinae,” and was divided into “fens,” “fennes,” or
sections.
29. Assoil: absolve. compare the Scotch law-term “assoilzie,”
to acquit.
30. Saint Helen, according to Sir John Mandeville, found the
cross of Christ deep below ground, under a rock, where the
Jews had hidden it; and she tested the genuineness of the sacred
tree, by raising to life a dead man laid upon it.