23 
5 are fragments of fossil bones from the Rock pf 
Gibraltar. 
Fossil remains and impressions of vegetables. 
A human skull and a Roman sword incrusted, 
found in the Tiber. 
Engraved nautili and other shells: and different 
marine productions* 
CRACHERODEAN COLLECTION OF SHELLS. 
In this table is deposited Mr. Cracherode’s 
valuable collection of shells. Among these some 
of the most remarkable are the following: 
Univalves . 
(Division l.J A paper nautilus or argonaut 
shelly remarkable for the slightness of its fabric* 
and the elegance of its shape. It is inhabited by 
an animal not unlike a cuttle fish, which, by 
extending a pair of membranes adhering to the 
lop of its longest arms, has the power of sailing 
on the surface of the sea. # 
Agate and zebra snails: one of these being 
polished appears of a beautiful rose colour. 
k (Div . 
* For an ample, as well as accurate, description of this curious 
animal, consult the third volume of the Mollusca, in Sonnini’s 
enlarged edition of the Work? of Button, 
ROOM IX. 
Nat. Hist. 
CASES 
13 & 14, 
15. 
1 6. 
TABLE 
1 , 
