LIFE IN THE INSECT WORLD. 239 



I have mentioned. One of these is the Lantern- 

 fly, which emits a brilliant light from a sort of 

 horn projecting from its head ; and another is 

 the Electric Centipede, which leaves a track of 

 light behind it wherever it moves. 



Even the ocean contains a vast number of 

 luminous animals ; and it is supposed to be 

 partly owing to these that the waters, particu- 

 larly within the tropics, are frequently observed 

 to have the appearance of liquid fire. 



And now, my dear little girls, we have had a 

 long talk, and you remember that this evening 

 is to close our conversations upon insects for the 

 present ; but I hope it will be only the begin- 

 ning of your knowledge of them. 



I have introduced you to a few, a very few, 

 in comparison with what you might meet with in 

 a single day spent in the country ; but I want 

 you to cultivate their acquaintance, I am sure 

 you will find them interesting friends. Your 

 knowledge of these may be the means of in- 

 troducing you to more, and you will find that 

 there is always something new to learn, some- 

 thing interesting to discover. You cannot fail 

 to meet with the objects of your study, for they 



