James: Also contact Ed Tennant at the University of Florida. I believe he's been refining the technique that he used (& Alicia Valentino tested) at Van Winkle's Mill. Ed' orginial Van Winkle work can be found here: http://www.little-yeti.com/Van_Hollow/van_soils.htm And Ed's contact info. can be found on his web site: http://www.little-yeti.com/Van_Hollow/van_soils.htm jamie --- I am [log in to unmask] or [log in to unmask] Jamie C. Brandon University of Arkansas Department of Anthropology & NorthWest Arkansas Community College Department of Behavioral Sciences http://www.projectpast.org/jcbrandon/