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<div><font color="#1F497D">We keep Paryphantas in a mixture of ethanol and glycerine; pure ethanol will probably cause the periostracum to delaminate. The glycerine does not affect DNA, as far as I know. </font></div>
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<div><font color="#1F497D">PC</font></div>
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<div><font size="2"><span style="font-size:10pt;"><b>Paul Callomon<br>
</b><i>Collection Manager, Malacology, Invertebrate Paleontology and General Invertebrates</i></span></font></div>
<div align="center" style="text-align:center;"><font size="2"><span style="font-size:10pt;"><img width="83" height="41" src="rtfimage://"></span></font></div>
<div><font size="2"><span style="font-size:10pt;"><b>Academy of Natural Sciences of Drexel University, Philadelphia</b></span></font></div>
<div><font size="2"><span style="font-size:10pt;">1900 Benjamin Franklin Parkway, Philadelphia PA 19103-1195, USA<br>
<a href="mailto:callomon@ansp.org"><font color="blue"><i><u>callomon@ansp.org</u></i></font></a><i> Tel 215-405-5096 - Fax 215-299-1170</i></span></font></div>
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<div><font face="Tahoma" size="2"><span style="font-size:10pt;">_____________________________________________<br>
<b>From:</b> nhcoll-l-bounces@mailman.yale.edu [<a href="mailto:nhcoll-l-bounces@mailman.yale.edu">mailto:nhcoll-l-bounces@mailman.yale.edu</a>] <b>On Behalf Of </b>Ron Eng<br>
<b>Sent:</b> Wednesday, March 04, 2015 3:06 PM<br>
<b>To:</b> nhcoll-l@mailman.yale.edu<br>
<b>Subject:</b> [Nhcoll-l] cracking and disintegration of molluscan shells</span></font></div>
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<div><font face="Times New Roman" size="3"><span style="font-size:12pt;">Greetings,</span></font></div>
<div><font face="Times New Roman" size="3"><span style="font-size:12pt;"> </span></font></div>
<div><font face="Times New Roman" size="3"><span style="font-size:12pt;">It has been common to either oil or immerse (in glycerine) specimens that have thin shells and thick periostracums; for example, Paryphanta snails and unionids. </span></font></div>
<div><font face="Times New Roman" size="3"><span style="font-size:12pt;"> </span></font></div>
<div><font face="Times New Roman" size="3"><span style="font-size:12pt;">What is the best practice?</span></font></div>
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<div><font face="Times New Roman" size="3"><span style="font-size:12pt;">Regards,<br>
Ron</span></font></div>
<div><font face="Times New Roman" size="3"><span style="font-size:12pt;"> </span></font></div>
<div><font face="Times New Roman" size="3"><span style="font-size:12pt;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br>
Ronald Eng<br>
Geology & Paleontology Collections Manager<br>
Burke Museum of Natural History and Culture<br>
University of Washington<br>
Box 353010<br>
Seattle, WA 98195-3010</span></font></div>
<div><font face="Times New Roman" size="3"><span style="font-size:12pt;"> </span></font></div>
<div><font face="Times New Roman" size="3"><span style="font-size:12pt;">e-mail: <a href="mailto:rceng@u.washington.edu"><font color="blue"><u>rceng@uw.edu</u></font></a></span></font></div>
<div><font face="Times New Roman" size="3"><span style="font-size:12pt;">telephone: 206.543.6776<br>
fax: 206.685.3039</span></font></div>
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