144 LECTURE XI. 



sence of an enemy. This is the instinct of 

 vigilance. 



Instinct shows itself in a variety of ways. For 

 instance, an otter produced a pair of young ones 

 in the Zoological Gardens in London, and these 

 young ones got into a pond when but half filled 

 with water, and were unable to climb up its 

 perpendicular sides. When they had remained 

 in the water some minutes, the mother appeared 

 anxious to get them out, and made several at- 

 tempts to reach them from the side of the pond. 

 She then plunged into the water, and, after 

 playing with one of them for a short time she 

 put her head close to its ear, as if to make it 

 understand her intention, and then sprung out 

 of the pond, while the young one clung tightly 

 by its teeth to the fur at the root of her tail. 

 Having landed it she rescued the other in the 

 same manner. This offers a curious instance of 

 a communication of ideas between a parent and 

 its young, in consequence of some peculiar in- 

 stinct ; but it also shows the early age in which 

 intelligence is possessed by offspring. 



The love of life is possessed in common both 

 by man and animal. In the latter, instinct 



