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<div class="moz-cite-prefix">... might potentially foster or
stimulate metal corrosion of historic insect pins (of poor
quality) to some extent - depending on amount of VOCs that
accumulated inside the drawer in combination with temperature and
humidity (shifts) ...</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">With best wishes</div>
<div class="moz-cite-prefix">Dirk<br>
</div>
<div class="moz-cite-prefix"><br>
</div>
<div class="moz-cite-prefix">Am 07.10.2021 um 18:12 schrieb
Callomon,Paul:<br>
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cite="mid:SN6PR01MB5231A9D2376A69C108D120E1C3B19@SN6PR01MB5231.prod.exchangelabs.com">
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<p class="MsoNormal">Doug et al.,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’ve also often wondered why the insect
world persists with wooden cases. It may be because there are
few calcitic structures in most insects – my limited
understanding of them is that they are made mostly of protein
and carbohydrates like chitin – so Byne’s, which is specific
to calcium carbonate (and perhaps calcium phosphate, mammalogy
colleagues?) is less likely to rear its fuzzy head.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">PC<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;color:black">Paul Callomon<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;color:black">Collection Manager,
Malacology and General Invertebrates<i><o:p></o:p></i></span></p>
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style="text-align:center;background:white" align="center">
<span style="font-size:12.0pt;color:black">
<hr width="100%" size="2" align="center">
</span></div>
<p class="MsoNormal" style="background:white"><b><span
style="font-size:12.0pt;color:black">Academy of Natural
Sciences of Drexel University</span></b><b><span
style="font-size:12.0pt;color:black"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="background:white"><span
style="font-size:12.0pt;color:black">1900 Benjamin Franklin
Parkway, Philadelphia PA 19103-1195, USA<br>
<i><a href="mailto:prc44@drexel.edu" moz-do-not-send="true"><span
style="color:#0563C1">prc44@drexel.edu</span></a> Tel
215-405-5096 - Fax 215-299-1170</i><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><b>From:</b>
Nhcoll-l <a class="moz-txt-link-rfc2396E" href="mailto:nhcoll-l-bounces@mailman.yale.edu"><nhcoll-l-bounces@mailman.yale.edu></a>
<b>On Behalf Of </b>Douglas Yanega<br>
<b>Sent:</b> Thursday, October 7, 2021 12:07 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:nhcoll-l@mailman.yale.edu">nhcoll-l@mailman.yale.edu</a><br>
<b>Subject:</b> Re: [Nhcoll-l] Wooden storage cabinets<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p><b><span
style="font-family:"Arial",sans-serif;font-variant:small-caps">External.<o:p></o:p></span></b></p>
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<p class="MsoNormal" style="margin-left:.5in">While the
earlier parts of the thread about cotton wool and such did
not seem to be something that would ever concern me, the
following does:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:.5in">On 10/7/21
6:32 AM, Callomon,Paul wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal" style="margin-left:.5in">Tightly-sealed
wood cabinets are nevertheless hazardous for Byne’s
because acetic and formic acids are volatile at room
temperature, so they will migrate out of the wood and go
in search of things to eat regardless of atmospheric
conditions. Lower humidity within the cabinets mitigates
this problem to some degree, but does not solve it, and
some woods such as oak are known to exude a lot of acid.
It may be possible to mitigate this with the equivalent of
the “sacrificial anode” on a wooden ship (that is, place a
tray of hygroscopic alkaline material in the cabinet that
is more attractive to the acids than the specimens) but I
have not seen this done.
<o:p></o:p></p>
</blockquote>
<p style="margin-left:.5in">I manage a very large insect
collection, and ALL insect collections, without exception,
use wooden drawers (though maybe not wooden *cabinets* any
more); my collection has over 5500 wooden drawers, ranging
in age from 1 to about 70 years. After over 20 years going
to international meetings for insect collection curators
(the Entomological Collections Network - ECN), I don't think
I have ever heard anyone say that keeping insect specimens
in wooden drawers was something that -
<b>in and of itself</b> - was probably causing significant
damage to them over time. If there are acidic volatiles
produced by wood and paper, then insect collections ARE
going to experience significant exposure, and there are
certain things one gets familiar with in insect collections
(black exoskeletons turning red/brown after a few decades,
pins embedded in cork corroding where they contact the cork
and getting stuck, etc.) that might be related to this, but
not fully appreciated as to the cause.<o:p></o:p></p>
<p style="margin-left:.5in">That strikes me as an odd
"disconnect", that a major part of the NH museum community
that very much stands to be affected by this phenomenon
would be so poorly-informed on the subject compared to other
subsets of the community. Has any of the literature and
research on this ever been performed by entomologists, or
published in entomological journals, where it could get
broader attention, and it's just being overlooked, or have
we genuinely been left out of the proverbial loop? A fairly
targeted Google search reveals essentially nothing in the
entomological literature except a short note from 1992
(evidently by a colleague in my own department) suggesting
that acid outgassing from wood might cause corrosion in
insect pins.<o:p></o:p></p>
<p style="margin-left:.5in">If I'm not mistaken, then maybe
one of you folks who is familiar with the risks of VOCs
outgassing from wood would be willing and interested in
contacting the program chairs for the impending annual ECN
meeting, which is online this year, via <a
href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fecnweb.net%2Fecn2021%2Fmeeting%2F&data=04%7C01%7Cprc44%40drexel.edu%7Cde638f9cafff404f66a008d989ac74dc%7C3664e6fa47bd45a696708c4f080f8ca6%7C0%7C0%7C637692196051893917%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=uq%2BmlxNd30VPwYq6qkYoncIjrchXdQwEpKKJ5Gi1K5Q%3D&reserved=0"
moz-do-not-send="true">
https://ecnweb.net/ecn2021/meeting/</a> - the meeting is
in only a few weeks (Oct. 25-27), and most of the program is
already set, but I have the impression that the organizers
would do their best to find a time for such a potentially
important presentation.<o:p></o:p></p>
<p style="margin-left:.5in">Sincerely,<o:p></o:p></p>
<pre style="margin-left:.5in">-- <o:p></o:p></pre>
<pre style="margin-left:.5in">Doug Yanega Dept. of Entomology Entomology Research Museum<o:p></o:p></pre>
<pre style="margin-left:.5in">Univ. of California, Riverside, CA 92521-0314 skype: dyanega<o:p></o:p></pre>
<pre style="margin-left:.5in">phone: (951) 827-4315 (disclaimer: opinions are mine, not UCR's)<o:p></o:p></pre>
<pre style="margin-left:.5in"> <a href="https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Ffaculty.ucr.edu%2F~heraty%2Fyanega.html&data=04%7C01%7Cprc44%40drexel.edu%7Cde638f9cafff404f66a008d989ac74dc%7C3664e6fa47bd45a696708c4f080f8ca6%7C0%7C0%7C637692196051893917%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=GsP%2BtWdTy1pk%2FQya%2Fpwb8lbC%2B2aOTEPn%2Bx%2FEWoqtNdk%3D&reserved=0" moz-do-not-send="true">https://faculty.ucr.edu/~heraty/yanega.html</a><o:p></o:p></pre>
<pre style="margin-left:.5in"> "There are some enterprises in which a careful disorderliness<o:p></o:p></pre>
<pre style="margin-left:.5in"> is the true method" - Herman Melville, Moby Dick, Chap. 82<o:p></o:p></pre>
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