Modern curiosities of art & nature extracted out of the cabinets of the most eminent personages of the French court : together with the choicest secrets in mechanicks, communicated by the most approved artists of France
Lémery, Nicolas, 1645-1715.
To make hollow Moulds of Sulphur, in which to cast Medals of Plaister very neatly.
MAke the Medal very hot before the Fire, oyl it with Linseed oyl, make a Cir∣cle of Potters Earth round about it, then have your Sulphur ready melted, not too hot, but only that it begins to warm, as it were atop, pour it on as gently as you can, least it blister and become knotty, and 'tis done.
