A History of Magic and Experimental Science, Volume 2 (of 2) / During the First Thirteen Centuries of Our Era

by Lynn Thorndike

Arundel 251, 14th century, fol. 35v.

CU Trinity 1081, 15th century, fol. 69.

Bodleian 177 (Bernard 2072), late 14th century, fols. 29v-30r.

* Ashmole 1437, 15th century, fol. 3v, “De corio serpentis.” John’s prefatory statement is omitted and no author is mentioned.

* Amplon. Folio 276, early 14th century, fol. 69.

CLM 206, 15th century, fol. 38, De viribus corei serpentis pulverisati.

* CLM 444, 14th century, fol. 200.

* CLM 534, 14th century, fol. 42v.

Bologna University Library 135, 14th century, fols. 31r-32r, “Aichauus, Liber vitae.... Illum autem librum fecit Aichauus fysicus.”

Arezzo 232, 15th century, fol. 80, “Secreta magistri Iohannis,” from the fact that they follow the Verbum abreviatum ascribed to Roger Bacon are probably the alchemical treatise attributed to Bacon’s disciple, the youth John, rather than our treatise.