The Snake-stone is another striking Welsh tradition, associated with Midsummer eve. At this time of the year there are certain convocations of snakes, which, hissing sociably together among one another, hiss forth a mystic bubble, which hardens into the semblance of a glass ring. The finder of this ring is a lucky man, for all his undertakings will prosper while he retains it. These rings are called Gleiniau Nadroedd in Welsh--snake-stones in English. They are supposed to have been used by the ancient Druids as charms. There is a Welsh saying, respecting people who lay their heads together in conversation, that the talkers are 'blowing the gem.'