Dear Dr.Chew, Thank you for sharing the interesting story about the two Chinese ladies. Fascinating. I wonder if the same applies to joss sticks that are traditionally used in religious rituals in India. They usually crumble into ash upon burning so I don't think there are any metals involved. Moneesha ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn