An alchemic work dedicated to King Philip IV of France (1268-1314) and ostensibly written by an anonymous philosopher on his death bed. Dorothea Singer (see Bibliography) suggests that it could have been part of the alchemic corpus attributed to Ramon Llull (c. 1232-c. 1315), a polymath of great fame who paved to way to subsequent knowledge in many fields such as mathematics, logic, and theology. Several texts have been falsely attributed to Llull and started to circulate under his name from the 14th century; many of these texts concern alchemy. Singer advances this hypothesis on the basis of a connection between Llull and Philip IV of France and on the fact that Llull had written another work called Testamentum. Lynn Thorndike, however, attributes it to Arnaldus of Villanova (see Bibliography).

Title: on f. 29v, rubricated Incipit libri novi testamenti missi phylippo regi francie a quodam philosopho qui hoc testavit secretum: nam cum pateretur diffidatus est a medicis et credens se fore cito moriturum hoc instituit testamentum ne tanta scientia perderetur.

Prologue: it begins on f. 20v with the words [N]obilissimo et excellentissimo principi phylippo dei gratia regi franciae et omnibus aliis de genere suo ac omnibus de suo regno honor et pax regno franciae et gloria principi; it ends on f. 30r with the words Ita quicquid philosophi scientur occultaverunt in libris suis de predicto lapide declaratur in hoc novo libro.

Novum Testamentum: starts on f. 30r with the words Incipit liber novi testamenti qui dividitur in tres partes principales; it ends on f. 33v with the words postea debet representari soli donec sit lapis completus pretiosus sicut aureum finum nturale. Amen. It is followed by the rubric Finis. Explicit liber novi testamenti.