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Date: | Tue, 19 Jun 2001 10:17:07 -0500 |
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Hi, Conch-Lers!
Do you think this formula could be used on old, but still in good condition Unionids?
Thanks,
Linda
On 19-Jun-01, Kevin Kutolowski <[log in to unmask]> wrote:
Paul
I have use a mixture of Glycerine, Denatured Alcohol and Demineralized
Water all in equal parts. I have used this on dead freshwater clams (Unionids)
that I have found. When treated right after cleaning it prevented the shell from
cracking. If the unionid is left to dry out the shell itself will crack. I have
had very good success with this formula.
Kevin Kutolowski
Stanfield, North Carolina
----- Original Message -----
From: Paul Callomon
To: [log in to unmask]
Sent: 6/19/01 1:15:18 AM
Subject: Pompadours for those butch
hairy-chested whelks
Comrades,
On the subject of periostracum preservation :
Has anyone any reliable information about the long-term stability of
Glycerine? I can't imagine that in commercial form it is 100% pure
(it's
extremely hard to make anything absolutely pure) - what are the
prinicipal
contaminants? Is it hygroscopic (absorbs moisture) as a surface film?
Does
it readily react with, for example, acids (acetic acid; formic acid
etc.)
from wood, and if so what are the products?
To what extent does Glycerine preserve the cell structure in the
periostracum - well enough for microscope slide preparation?
Thinking about the longer-term implications of this preservation method,
I
would be very interested to hear from anyone who has some older (20+
years)
specimens with their periostraca preserved in this way. I would also
appreciate any pointers to literature on this matter. We have a number
of
abyssal molluscs here which arrived floating in jars of thick
Glycerine;
their provider insisted that this was the only way to keep them from
cracking up. I suspect that as long as air is kept out, they won't
suffer
--- Kevin Kutolowski
--- [log in to unmask]
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