November 191 



upon a living fly the same process is again re- 

 peated, and before long the victim dies this miserable 

 death. 



The caterpillar of the common white butterfly 

 is frequently attacked, and dies in the same way 

 when seized upon by a species of minute fungus. 



THE NAUTILUS 



The shell of the common nautilus, when divided 

 lengthways, affords a beautiful example of delicate 

 structure. It is the dwelling of a species of cuttle- 

 fish found in the Indian Ocean. 



CHAMBERED NAUTILUS. 



The creature lives only in the upper compartment 

 of its shell, whilst below it arc thirty-six exquisitely 

 graduated air-chambers lined with mother-of-pearl. 



