Dear David,

It looks like the whorls are relatively thick and smooth. The grains appear to be only on the outside.

David Kirsh

-----Original Message-----
>From: David Campbell <[log in to unmask]>

>
>Can you tell if sand grains are only glued to the outside versus the
>whole thing being made of sand grains?  Some polychaetes and some
>forams (not to mention many other things) build out of sand.  Forams
>would almost always be chambered.


"I learned long ago, never to wrestle with a pig. You get dirty, and besides, the pig likes it." -- G.B. Shaw

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