Dear Wesly

A shell is built up in different layers of which peristracum is the side
outside. It consits mainly of Conchiolin
which is like the Chitin in insects and sourness Amino. This is most
important to win calcar (lime) for the
shell.

Helmut from Innsbruck




Helmut "Helix" Nisters
private:
Franz-Fischer-Str. 46
A-6020 Innsbruck / Austria / Europe
phone: 0043 / 512 / 57 32 14
e-mail: [log in to unmask]
website: www.netwing.at/nisters
office:
Natural History Department of the
Tiroler Landesmuseum Ferdinandeum Innsbruck
Feldstrasse 11a
A-6020 Innsbruck / Austria / Europe
phone: 0043 / 512 / 58 72 86 - 37
e-mail: [log in to unmask]
website: www.tiroler-landesmuseum.at


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> Does anyone have comments in general about periostracum.  Such as what
> purpose does it perform, how applied & when, why cover the beautiful
> pattern on the shell?
> --
>                      Aloha from Wesley M. Thorsson
> Editor of Internet Hawaiian Shell News, a monthly Internet Publication
>            122 Waialeale St, Honolulu, HI  96825-2020,  U.S.A
>        http://www.hits.net/~hsn                 [log in to unmask]
>