<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Book Antiqua";
panose-1:2 4 6 2 5 3 5 3 3 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Book Antiqua","serif";
color:windowtext;
font-weight:normal;
font-style:normal;
text-decoration:none none;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Arial","sans-serif";
color:navy;
font-weight:bold;
font-style:normal;
text-decoration:none none;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-GB" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy">Nat. Hist. Conservators (others may look away now)<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy">I’ll be grateful for an opinion on the metal corrosion shown in the attached image, it depicts dark coloured dendritic growths, altogether different from the
regular green waxy verdigris. Any ideas what is its composition/formation/what kinds of pins are prone to it/prevention?<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy">Many thanks!<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><i><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy">David</span></i><i><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:navy"><o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">David G. Notton, Senior Curator (Hymenoptera)
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">Department of Life Sciences, Insects Division, Darwin Centre - room 315,
<a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.nhm.ac.uk_&d=AwMGaQ&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=vu1SgbfmdUDN1UWNLztMThibU3NPdXlRw3tT1MoYIUU&s=xwtnsXnSDsvmPzMh3F9Gin7gtXa2-bHl5i1lYW5e8d0&e="><span style="color:blue">The Natural History Museum</span></a>, Cromwell Road, London, SW7 5BD, United Kingdom. 0207 942 5974.
</span><span style="color:navy"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">My publications:
<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.researchgate.net_profile_David-5FNotton&d=AwMGaQ&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=vu1SgbfmdUDN1UWNLztMThibU3NPdXlRw3tT1MoYIUU&s=7xyw0ITUN0HdP-KOwfH1MiEjGTRfI8EFr8By6Uy5vYg&e="><span style="color:blue">David Notton Researchgate profile</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">Museum data:
<a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__data.nhm.ac.uk_&d=AwMGaQ&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=vu1SgbfmdUDN1UWNLztMThibU3NPdXlRw3tT1MoYIUU&s=EmJ2eBf59GeiEY-LSWCrVg51v-KBE19qiL6eGDWFRCo&e="><span style="color:blue">Natural History Museum Data Portal</span></a></span><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:navy"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:navy"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:navy"> <o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif";color:navy"><o:p> </o:p></span></b></p>
</div>
</body>
</html>