In this case, as in many others, a change of color is asserted to take place in the stone, an indication that the mineral substance responds to some impression from without. It is as though part of the virtue of the stone had left it, for with a colored stone we might say, in a poetic sense, that its color is its life and soul. Hence in this particular instance the loss of color was probably thought to indicate that some in-dwelling spirit had passed from the stone to the little girl and dictated her responses; possibly if the ring were arranged with some mechanical or hollow space a colored foil could be pressed under the white stone, or a liquid passed under it, giving the delusion of the change from white to red and red to white. In Scandinavia, carnelians were used as ring-stones in very early times; a fine specimen of such a ring was found in Ysted, in the province of Scania, and another at Verdalen, Norway. That these were credited with power as amulets seems highly probable, for some of the early Norse rings were so highly valued by their owners that they were designated by individual names. Thus we are told of a gold ring named Hnited, “The Welded,” which was given as a precious gift by Ulf the Red to King Olaf. This particular ring was welded together from seven pieces of exceptionally pure gold, the number of pieces evidently having a mystic significance.[535] There is or was a superstition among the Swedish Lapps that at times, on the lonely moorlands, might be seen visionary herds of reindeer, packs of dogs, or even apparitions having the form of Laplanders. When one who sees any such objects goes in pursuit of them, they disappear before they can be reached; if, however, while they are still visible a steel or brass ring is thrown at them, they immediately become real living creatures. Popular legend even has to tell of men or women who in this way have secured wives or husbands, respectively, in reality changelings, _trolls_, apparently or really transformed into human beings.[536]