Jennifer,
I have used a small X-ray machine to study shell thickness in
Littorinidae shells ("winkles").
Regards,
Bill P.
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* Charles (Bill) Pettitt * Keeper of Invertebrates *
* * (& network supervisor) *
* E-mail: [log in to unmask] * Manchester Museum *
* * University of Manchester *
* Tel: +44.61.275.2666 * Manchester M13 9PL *
* Fax: +44.61.275.2676 * United Kingdom *
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