<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=us-ascii">
<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;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Arial","sans-serif";
color:windowtext;
font-weight:bold;
font-style:normal;
text-decoration:none none;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@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="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">Dear Colleagues<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif"">Thank you for your interesting and informative replies, I’m attaching a compilation for your interest. The leading view seems to be that the dendrites are some kind of metal
sulphide, most probably silver sulphide (presumably from corrosion of silver plating) or maybe copper sulphide.<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:12.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></b></p>
<p class="MsoNormal"><i><span style="font-size:12.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-GB">David</span></i><i><span style="font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:EN-GB"><o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-GB">David G. Notton, Senior Curator (Hymenoptera)
</span><span style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-GB">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=AwMFAg&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=xHRt0UUSFJX5iExKy_OkTdpwdGQukHLsx3jXI4miNzw&s=T5D9fBcStSTqSSWRWgCdxpaLtR7J0INfcbY0k1ji_CM&e="><span style="color:blue">The Natural History Museum</span></a>, Cromwell Road, London, SW7 5BD, United Kingdom. 0207 942 5974.
</span><span style="mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-language:EN-GB">My publications:
<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.researchgate.net_profile_David-5FNotton&d=AwMFAg&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=xHRt0UUSFJX5iExKy_OkTdpwdGQukHLsx3jXI4miNzw&s=DRnzSKBJtn2Gqg6gD-s7lDk1ndq4HsJmH97S2xMBTBI&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";mso-fareast-language:EN-GB">Museum data:
<a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__data.nhm.ac.uk_&d=AwMFAg&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=xHRt0UUSFJX5iExKy_OkTdpwdGQukHLsx3jXI4miNzw&s=ncce1o8s07mXfxKKG5GCdEDOBzBhptEdoejwyXl0jCw&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";mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB"> <o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>