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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi Sergio,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">I’m presuming your specimen is quite an old one. Fats and oils can be difficult to adequately remove from skeletal material and skins
in marine mammals and reptiles. It looks from the image that parts of the skeleton are still in place. These are particularly difficult to degrease (e.g. see
<a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.museum.nantes.fr_pages_21-5Factivitesscientifiques_TableRonde-5Fsquelettes-5Ffevrier2012_interventions-5Ffr-5Fang.html&d=DwMGaQ&c=cjytLXgP8ixuoHflwc-poQ&r=LpYc_Z_iN1KRw0hheb3x6-8MJUMu482qfHowpGYJqwc&m=pXIAZI42PI-tUPVmqZmXPH3uBZeF_tVw-vQ9NSMZ-bc&s=TztQzftjaTH9-6l_X2F2p9iCMmN1uP5J7iH6Oz5Dlfg&e=">
http://www.museum.nantes.fr/pages/21_activitesscientifiques/TableRonde_squelettes_fevrier2012/interventions_fr_ang.html</a> and
<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__onceinawhale.com_2013_07_02_we-2Dare-2Dnot-2Dalone-2Dand-2Dnot-2Dthe-2Dfirst_&d=DwMGaQ&c=cjytLXgP8ixuoHflwc-poQ&r=LpYc_Z_iN1KRw0hheb3x6-8MJUMu482qfHowpGYJqwc&m=pXIAZI42PI-tUPVmqZmXPH3uBZeF_tVw-vQ9NSMZ-bc&s=2lLoizrlw8JRfNYcV9Eb2pjCvt1uzlOg3wHklyjuR2M&e=">
https://onceinawhale.com/2013/07/02/we-are-not-alone-and-not-the-first/</a> ). The fatty acid components will migrate out of the bone material and into the surface skin. As it will not now be possible to degrease the specimen it is probably now a case of regularly
cleaning off the oily deposits as these will attract dirt, potentially attract insect pests and are likely to further degrade on exposure to air - thus potential ‘acid burn’ issues mentioned by Steve previously (if this occurs there is physical non reversible
degradation of the skin). The ‘once in a whale’ teams blog on cleaning whale bone (linked above) is a good overview of potential approaches for this depending on access to chemicals etc.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hope that helps in some way<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Jules<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="CY" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Prif Gadwraethydd, Gwyddorau Naturiol
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="CY" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Principal Conservator Natural Sciences<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="CY" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><a href="mailto:julian.carter@amgueddfacymru.ac.uk"><span style="color:#0563C1">julian.carter@amgueddfacymru.ac.uk</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="CY" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><a href="mailto:julian.carter@museumwales.ac.uk"><span style="color:#0563C1">julian.carter@museumwales.ac.uk</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="CY" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">029 20573230<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="CY" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">07870448074</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> nhcoll-l-bounces@mailman.yale.edu [mailto:nhcoll-l-bounces@mailman.yale.edu]
<b>On Behalf Of </b>Steve Halford<br>
<b>Sent:</b> 08 November 2017 21:59<br>
<b>To:</b> Sergio Montagud <Sergio.Montagud@uv.es><br>
<b>Cc:</b> nhcoll-l@mailman.yale.edu<br>
<b>Subject:</b> Re: [Nhcoll-l] fatty dolphin<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Hi Sergio,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">This looks similar to "grease burn" seen in fatty bird skins. An ornithology conservator may have some suggestions. (My own experiences with grease burned specimens -- soaking and scrubbing
with solvents -- were mostly unsatisfactory.)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Steve.<o:p></o:p></span></p>
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<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Steve Halford (<a href="mailto:halford@sfu.ca" target="_blank">halford@sfu.ca</a>)<br>
Museum Technician (Retired) <br>
Department of Biological Sciences<br>
Simon Fraser University<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Nov 8, 2017 at 6:33 AM, Sergio Montagud <<a href="mailto:Sergio.Montagud@uv.es" target="_blank">Sergio.Montagud@uv.es</a>> wrote:<o:p></o:p></p>
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Dear all,<br>
<br>
We have a very old dolphin (maybe from the last years of the 19th century) with an important fat problem. We don't know the original color of the specimen (live dolphins of this species are blue-grey) but our specimen is now brown. The fat is problematic because
the entire specimen is covered by it and it looks greasy and shiny for proper exposure. In addition, the grease falls on some parts of the wood below.<br>
<br>
We don't have this problem in other specimens (maybe, because this is the only cetacean we have) and not know wha we can do. Someone could recommend some action to stop the fat proliferation?<br>
<br>
I add some pictures of this special guy.<br>
<br>
Thanks<br>
<br>
Sergio<br>
<br>
<br>
--<br>
********************************<br>
Sergio Montagud Alario<br>
Universitat de València<br>
e-mail: <a href="mailto:sergio.montagud@uv.es">sergio.montagud@uv.es</a><br>
********************************<br>
--<br>
********************************<br>
Sergio Montagud Alario<br>
Universitat de València<br>
e-mail: <a href="mailto:sergio.montagud@uv.es">sergio.montagud@uv.es</a><br>
********************************<br>
<br>
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<p class="MsoNormal"><o:p> </o:p></p>
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