...I'm sure I can remember one of my classmates doing this in the chemistry lab in 1971:
http://news.bbc.co.uk/1/hi/health/8138963.stm Bob -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.