"martin weiss" <weissm at mail.rockefeller.edu> wrote in message news:p0510030fb7960b960189@[192.168.1.49]... > Replies to mweiss at nyhal;lsci.org, please. > It does help if you provide a valid email address. Lesley Robertson Curator of the Delft School of Microbiology Archive http://www.beijerinck.bt.tudelft.nl