Nautilus and Ammonite. 125 
comb or pecten, and is not attached. This polypus 
ordinarily feeds near the sea-shore ; sometimes it is 
thrown by the waves on the dry land, and the shell 
falling from it,is caught, and there dies. The other 
is in a shell like a snail, and this does not go out of 
its shell, but remains in it lke a snail, and some- 
times stretches forth its cirrhi.”? The first of these 
animals, there can be no doubt, is the Argonaut, or 
Paper Nautilus, and the latter that which is called 
the True Nautilus, of both of which species let us 
say a few words, which we will introduce by quoting 
some beautiful lines from a poem called ‘ The 
Pelican Island,” by James Montgomery :— 
* Light as a flake of foam upon the wind, 
Keel upwards from the deep, emerged a shell, 
Shaped like the moon ere half her orb is filled: 
Fraught with young life it righted as it rose, 
And moved at will along the yielding water. 
The native pilot of this little bark 
Put outa tier of oars on either side; 
Spread to the wafted breeze a two-fold sail, 
And mounted up and glided down the billow, 
In happy freedom, pleased to fill the air, 
And wander in the luxury of light.” 
The tiny mariner here alluded to is the Paper 
Nautilus, common in the Mediterranean and some 
Q 
