[Nhcoll-l] Question about entomological collections

[Aline Donini]

Hello, 
I’m working on the preservation of entomological collections in France, and I want to deepen my practical knowledge.  I am looking for someone with knowledge of chemical interactions between specimens and fumigants.  I have observed some crystals on pinned insects. When I touch the crystals with a brush, they break down into powder. In the entomological storage box, there is, I think, some naphthalene. I am supposing that the naphthalene is somehow recrystallising on the insect bodies?
I have seen a reference: Kelman, Lisa ( https://www.bcin.ca/bcin/detail.app?id=182461)), but cannot find the article.
The specimens date from the 1930’s. The naphthalene, I think has been present for at least 30 years.
If you require photo’s of this phenomenon please reply to me off list.  
Many thanks,

Aline Donini
Conservation et Valorisation du Patrimoine Scientifique
+33 6 79 88 24 66



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