"the pollen grains provide prime nuclei for the crystals." Peter 52.194546, -1.673618 Peter, could you explain the physics/chemistry of this, or refer me to an article on same, please? Louisa Bugga-Bugga Creek Kangaroo Island Sth Australia *********************************************** The BEE-L mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html Guidelines for posting to BEE-L can be found at: http://honeybeeworld.com/bee-l/guidelines.htm