348 



ARGONAUT, OR PAPER-NAUTILUS. 



no muscular attachment to its shell ; whence it has been sup- 

 posed by many Naturalists to be a parasitic inhabitant, which 



546. ARGONAUT, OR PAPER NAUTILUS. 



had taken up its abode within it ; the shell, from its resemblance 

 to that of the Carinaria (Fig. 901) being imagined to have 

 been really formed by an animal allied to that genus. It has 

 been lately proved, however, by the interesting experiments of 



