Editorial note — INDEX

Although the Metallum Martis or Iron made from Pitt-coale was not printed till 1665, Dudley had experimented with coal some time before 1619. As early as 1612, in a treatise entitled Metallica, Simon Sturtevant, who had already taken out a patent for making iron with pit-coal, states that ‘very lately’ green glass for windows, of good quality, had been melted with that material at Winchester House, Southwark.