<div dir="ltr"><div>This paper discusses the storage technique, but I agree with Doug—much of the glassine I've seen used in collections is not archival. I've picked up envelopes and had them crumble, or they are yellowed and have wicked oils from specimens. I think applying Odonata standards (clear poly bagging) is superior.</div><div><br></div><div>Chris</div><div><br></div><div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div style="color:rgb(0,0,0);font-family:"Palatino Linotype";font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;word-wrap:break-word;line-break:after-white-space"><b style="color:rgb(22,101,114);font-family:Arial;white-space:pre-wrap">Christopher C. Grinter</b></div><div style="color:rgb(0,0,0);font-family:"Palatino Linotype";font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;word-wrap:break-word;line-break:after-white-space"><div style="color:rgb(0,0,0);font-family:"Palatino Linotype";font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;line-height:1.5;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;color:rgb(22,101,114);vertical-align:baseline;white-space:pre-wrap">Collection Manager of Entomology</span></div><div style="color:rgb(0,0,0);font-family:"Palatino Linotype";font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;line-height:1.5;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;vertical-align:baseline;white-space:pre-wrap"><font color="#166572">President, Entomological Collections Network</font></span></div><div style="color:rgb(0,0,0);font-family:"Palatino Linotype";font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;line-height:1.5;margin-top:0pt;margin-bottom:0pt"><span style="vertical-align:baseline"><font color="#166572"><font face="Arial"><span style="font-size:9.5pt;white-space:pre-wrap">Assistant Secretary & Asst. Treasurer, The Lepidopterists</span><span style="font-size:12.666666984558105px;white-space:pre-wrap">’ Society</span></font> <br></font></span><span style="letter-spacing:normal;text-transform:none;white-space:pre-wrap;word-spacing:0px;text-decoration:none;color:rgb(138,138,138);font-size:9.5pt;font-family:Arial;vertical-align:baseline">California Academy of Sciences</span><span style="letter-spacing:normal;text-transform:none;white-space:pre-wrap;word-spacing:0px;text-decoration:none;color:rgb(138,138,138);font-size:9.5pt;font-family:Arial;vertical-align:baseline"><br></span><span style="letter-spacing:normal;text-transform:none;white-space:pre-wrap;word-spacing:0px;text-decoration:none;color:rgb(138,138,138);font-size:9.5pt;font-family:Arial;vertical-align:baseline">T 415.379.5320</span></div><div style="color:rgb(0,0,0);font-family:"Palatino Linotype";font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;line-height:1.5;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;color:rgb(17,85,204);text-decoration:underline;vertical-align:baseline;white-space:pre-wrap"><a href="mailto:YourEmail@calacademy.org" target="_blank">cgrinter@calacademy.org</a></span></div><div style="letter-spacing:normal;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;color:rgb(0,0,0);line-height:1.5;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;color:rgb(17,85,204);text-decoration:underline;vertical-align:baseline;white-space:pre-wrap"><br></span></div></div><div style="color:rgb(0,0,0);font-family:"Palatino Linotype";font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration:none;word-wrap:break-word;line-break:after-white-space"><div style="line-height:1.5;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;color:rgb(138,138,138);vertical-align:baseline;white-space:pre-wrap">55 Music Concourse Drive</span><span style="font-size:9.5pt;font-family:Arial;color:rgb(138,138,138);vertical-align:baseline;white-space:pre-wrap"><br></span><span style="font-size:9.5pt;font-family:Arial;color: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> Hi all,<br>
><br>
> I was curious whether there are collections out there that store <br>
> sleeved lepidopteran material (like Odonata). We have a large amount <br>
> of butterflies that are stored in paper and glassine envelopes that <br>
> would take several lifetimes to spread, and we neither have the time <br>
> nor space to go that route. We like the idea of glassine sleeves as a <br>
> more permanent and protective way to store our enveloped material, but <br>
> wanted more input from the community on this.<br>
><br>
We have plenty of odonates in glassines in our collection, but these <br>
appear to be some sort of plastic, and are therefore very different from <br>
the glassines used for leps. I suspect there may be issues surrounding <br>
the archival properties of the latter, especially since paper may be <br>
acidic. We do have some very old papered leps (in both plain paper and <br>
glassines), and I see signs that there may be chemical interactions <br>
taking place; if you dump a lep out of a very old glassine, there is <br>
often a visible "stain" where the specimen was, and it's not just the <br>
body. These old glassines are also distinctly yellowed. It's reason to <br>
be suspicious, at least.<br>
<br>
Peace,<br>
<br>
-- <br>
Doug Yanega      Dept. of Entomology       Entomology Research Museum<br>
Univ. of California, Riverside, CA 92521-0314     skype: dyanega<br>
phone: (951) 827-4315 (disclaimer: opinions are mine, not UCR's)<br>
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