[Nhcoll-l] Freezing lep's

[Couteaufin at aol.com]

Many thanks to those of you have replied to my rusty/foxed Brimstone  
butterflies enquiry.
I also noted another related problem from freezing entomology drawers and  
which might require some thought.
 
Whilst looking through the same collection there were some drawers of small 
 geometrids and micromoths where the wings seem to have shifted their 
position  slightly.  Some were slightly raised above the norm and some were 
slightly  drooped.  I am sure that the specimens were originally set to the usual 
 standard so what has caused this?  I suspect that a temporarily raised RH  
level as the drawers warm up following freezing, can have slightly hydrated 
with  wing-thorax joints and leading to this problem.
 
 
With all good  wishes, Simon

Simon Moore MIScT, FLS, ACR,
Conservator of Natural  Sciences and Cutlery Historian,

_www.natural-history-conservation.com_ 
(http://www.natural-history-conservation.com/)  
_www.pocket-fruit-knives.info_ (http://www.pocket-fruit-knives.info/)  

_http://uk.linkedin.com/in/naturalsciencespecimenconserve_ 
(http://uk.linkedin.com/in/naturalsciencespecimenconserve)   
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