Phil,
  I have helped to accession several amateur collections at the Carnegie
Museum and none had slugs among the donated material.  I beleive there are
two reasons for this.  he first is the need to store speciemns in alcohol.
I do not think most amateurs are interested in doing this.  The second is
that the slug has to be kiled correctly otherwise you wind up with a mass
of featureless, contracted, mucous coated molluscan tissue that often is hard to
identify. I am currently working through the literature on the topic of
kiling mollusks in a relaxed manner to allow for identification and work
on the soft tissue.  It will be part of a chapter on collecting, cleaning
and preparing mollusks that will be appearing in a book that will be
published by the American Malacological Society.

Regards,
Charlie
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Charlie Sturm, Jr
Research Associate - Section of Invertebrate Zoology
                     Carnegie Museum of Natural History, Pittsburgh, PA
Assistant Professor - Family Medicine

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