104 



RAMBLES AND REVERIES* 



I have just said that the Ammonite is closely 

 related to the modern Nautilus. In order to obtain, 

 therefore, an idea of what the animal which inhabited 

 these wonderful shells was like, we cannot do better 

 than examine a Nautilus, an illustration of which 

 is given. No Ammonites have existed in our seas 

 since the close of the Secondary epoch of geology, but 



FIG. 19. Pearly Nautilus. 



there is no reason for doubting that the Nautilus is 

 the modern representative of this ancient and noble 

 race, which once crowded the waters of our globe. 



Although the shell of the Nautilus is seen to 

 consist of many chambers, yet the entire animal is 

 confined to the last of these, which, in consequence, 

 is called the body-chamber. From this chamber 

 the animal can protrude its head at will. The 



