Nor is all the Salt of this Mine of one colour, but of divers; that which is found grossly mixt with the Earth, receives some colour from it. And even that, which is most pure, and resembleth Chrystal, doth often receive Tinctures of several colours. In the middle of a Chrystal-Salt with long shoots, I have seen a delicate blew; and Count Rothal hath a large piece of a fair yellow. There are also some pieces very clear and transparent, so hard, that they carve them into divers Figures, as Crosses, Crucifixes, and others. Of each of these I have obtain'd a piece, and present the same unto you** These are now in the Repository of the Royal Society; as are also the several Specimens of Ores, hereafter mention'd.; but cannot omit to advertise you, that, whereas these Salts, though kept without care, remain'd dry for many months in other Countries, yet they began somewhat to relent soon after I came into England; and if they be kept in a Stove, or very hot place, they will be apt to lose their Transparency. I could not hear of any Damps in this Mine.