A cautionary tale if your study critters are a little on the small side. http://rsbl.royalsocietypublishing.org/content/10/10/20140771 http://www.the-scientist.com/?articles.view/articleNo/41223/title/Snail-Revival-Raises-Peer-Review-Debate/ Geoff -- Geoffrey B. Read, Ph.D. Wellington, NEW ZEALAND gread at actrix.gen.nz