i62 C O N C H O L O G Y, 



The inner ftmfture is chambered ; hut 

 the diaphragms, or partitions of the cells 

 or chambers, are not round ifli and with an 

 even edge, as thofe of the Orthoceros and 

 Nautilus, but are ila (lied, or jagged, into 

 procelies or appendages, which laid toge- 

 ther tally and ciofe into one another fo 

 ftrongly and curioufiy, that, when joined, 

 the fiats or furfaces of the whole Ammo- 

 nis are embellifhed with a beautiful leaved 

 work, exadly fimilar to that on the fculls , 

 of animals : and this by fofiilogifts is 

 called the foliaceous futures of the Am- 

 monites. 



However, this foliaceous work does not 

 fedm to be a particular charafter of the Am- 

 monia, for the Turbines Concamerati, or 

 preceding Genus, have it ; and I have like- 

 wife feen fpecies of Orthoceratit^e and 

 foffil Nautili vv^ith the fame work. 



Th^ 



