inside, either because it was deliberately scavenged at canning time, or > because it was consumed by oxydizing the contacts in part during use. > Plated > Does this occur in incandescent globes, and if so does it promotes longevity. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .