Newcomen added, "Over yonder by that little brook I saw the ruins of a trip-hammer, for crushing the shode." Having got his pipe lit, he thrust his free hand into a pocket and pulled out a black stone about the size of a bun. He let it roll into Daniel’s hand. It was heavy, and felt colder than the air. "Feel its weight, Dr. Waterhouse. That is black tin. Such was brought here, where we are standing, and melted in a peat-fire. White tin ran out the bottom into a box hewn from granite, and when it cooled, what came out was a block of the pure metal."