ex Erpenii Rudimentis ut plurimum desumpta cujus Praxi Grammaticae novam legendi praxin addidit Leonardus Chappelow., Main Heritage Compact General, PJ6305 .C53 1730, Book, Item-ID: i15637505, BIB-ID: 1010346
The author of this book is believed to be the 13th century alchemist referred to as Pseudo-Geber whose real name was probably Paul of Taranto, a Franciscan scholar from Southern Italy, not Jābir ibn Ḥayyān, the 8th century Arab alchemist and father of Arab chemistry. Cf. Newman.
