British Library MS. Sloane 3751. Paper. Octavo. 49 folios. 18th Century. 1. An alchemical treatise entitled 'Tou Continens or the Layeing open of the Philosophers Labrinthe' with a preface. [Imperfect]. ff.1-28. The preface begins: 'To write anything in the comendation of Alchamy'. The first chapter begins: 'The first matter of mattalls is the vapour of sulphure'.