Dan, This study is not precisely with respect to what you are asking but does provide a study of wrapped, unwrapped, and warmed colonies. https://naldc.nal.usda.gov/naldc/download.xhtml?id=CAT72345678&content=PDF <https://naldc.nal.usda.gov/naldc/download.xhtml?id=CAT72345678&content=PDF> Scott *********************************************** 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