THE PEARLY NAUTILUS. 



175 



placed it in spirits, after making a pen and ink sketch 

 of its external form." On his arrival in England Mr. 

 Bennett consigned this prize to Professor Owen. 



The shell of the nautilus has been long known, and 

 is common in cabinets ; but before describing its in- 

 habitant a few observations respecting it are necessary. 



Pearly Nautilus, 



Showing a section of the shell, and the general appearance of the cephalopod 

 in the ultimate chamber, a, a, the chambered shell, divided by walls into 

 distinct partitions ; h, b, the syphon traversing the chambers ; c, c, the man- 

 tle, of which a fold, d, is reflected over the shell ; e, the hood covering the 

 head; /, /, the tentacular organs; g, the funnel; h, the eye; i, one of the 

 orbital tentacula; k, one of the muscles fixing the mantle to the shell; this 

 being removed. 



