Calcination Quotes
All Marie was earth before it became marle, it is a kinde of clay ground, and chalke it selfe was marle before it became chalke. And that which is more, that which is yet chalke within the Matrix of the earth, wil in time harden into a white stone, And last of all, wheresoever there bee any stones that be subiect to calcination, they were first marle before they were stones, for otherwise by their calcination they could not possibly amend any barren grounds ... Also chalke and lime, after the frostes have taken them, whereby they crumble into powder, do become good marle, and serve in stead thereof.
Hugh Plat