Bill,
I hope you get a chance to try the shells in the anechoic chamber--please
report back to the list! And your note points out the best disproof of the
idea that the shell magnifies the sound of blood moving in your ears. You
don't hear your pulse when listening to the shell.
Gary
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Gary Rosenberg, Ph.D. [log in to unmask]
Malacology & Invertebrate Paleontology gopher://erato.acnatsci.org
Academy of Natural Sciences http://www.acnatsci.org
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