A Modern Commentary on the Great Work is a 1897 book written in English by a man called Cuthbertson. It is an essential non-Latin study aid for a contemporary student of Isaac Newton's Principia to understand what "the hell Isaac was going on about".[1]
The copy found at Jason Dunlop's home had a stamp with an image of an open book surrounded by three crowns and encircled by the words Bibliotheca Bodleiana, meaning that it belonged to the Bodleian Library.[1]