VOLUNTARY MOTION. 377 



pressions from the external senses.* In many animals, a 

 much more general suspension of the actions of life, extend- 

 ing even to the vital functions of respiration and circulation, 

 takes place during the winter months, constituting what is 

 termed Hybernation. 



* The only indications of dreaming- given by the lower animals occur in 

 those possessed of the gi-eatest intellectual powers, such as the I)o^, amonir 

 quadrupeds, and the Parrot, among birds. 



Vol. II. 48 



