Greeting! Could Conch-Lers give me some advice on how to use glycerine (or other products) to preserve the periostracum on a Cymatium? Do you immerse the shell in pure glycerine - or do you use a more dilute solution(and if so, diuted with what?). I recently bought some "glycerol" here and it did have the effect I had seen in the past in softening and preserving the perio of the shell I am trying to preserve. Any advice on what I should do? Michael Canberra ---------------------------------------------------------------------- [log in to unmask] - a forum for informal discussions on molluscs To leave this list, click on the following web link: http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1 Type your email address and name in the appropriate box and click leave the list. ----------------------------------------------------------------------