His most important anthropological work was his description of sixty human crania published originally in fasciculi under the title Collectionis suae craniorum diversarum gentium illustratae decades (Gottingen, 1790-1828).
Crania. This is a kind of shell-fish, with a shell composed of two
Away. Then the young Crania adhered to the bared shell, grew and
Face of the valve of a Crania, which is attached to a sea-urchin
Follows that, after the upper valve of the Crania fell off, the
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