NAUTILUS SYPHO. 
.'Jo7 
tile Wisdom in which such exquisite contrivances 
originated, and setting forth the Providence and 
Care of the Creator, in regulating the structure 
of every creature of his hand. 
SECTION V. 
NAUTILUS SYPHO, AND NAUTILUS ZIC ZAC. 
^He name of Nautilus Sypho* has been ap- 
plied to a very curious and beautiful chambered 
shell found in the Tertiary strata at Dax, near 
I^ourdeaux ; and that of Nautilus Zic Zac to a 
<^ognate shell from the London clay. (See PI. 43 , 
Pigs. 1, 2 , 3 , 4 .) 
These fossil shells present certain deviations 
iroin the ordinary characters of the genus Nau- 
tilus, whereby they in some degree partake of 
the structure of an Ammonite. 
These deviations involve a series of compen- 
sations and peculiar contrivances, in order to 
*'ender the shell efficient in its double office of 
acting as a float, and also as a defence and 
'^iiamber of residence to the animal by which it 
""as constructed. 
Some details of these contrivances, relating 
* This shell has been variously described by the names of Am- 
'«oniies Atun, Nautilus Sypho, and N. Zonarius. (See M. de 
^sterot. Mem. Geol. de Bourdeaux). 
