British Library MS. Sloane 3771. Paper. Duodecimo. 14 folios. 17th Century. A treatise of [Bernard] Count Trevisan, called in French Perole delaisse, or a world left, bequeathed or sent, etc. [Printed in French, in the 'Bibliotheque des Philosophes Chimiques', Paris, 4 Vol. Octavo, 1741-1754, Vol II, p.400.]