Just been looking at the photgraphs of the French "Lavaboilers" from Jonas Clark-Eliott in the Photos section. I was fascinated to see that there are so many different ones. I've only ever seen one in the UK, a friend bought one from a car boot sale about 10 years ago, it had glass beads in the bottom, and when it warmed up, there was a sudden "eruption" of bubbles from the beads. What is the story of these lamps?. I've never seen them on general sale in the UK.