THE BRAIN I2/ 



nerves in the lower part of the brain just above and in 

 front of the left ear. When this part of the brain is de- 

 stroyed, a person cannot talk, but he can still make a noise 

 with his mouth and understand speech, for the hearing 

 part of his brain is whole. He can also read and write, 

 for these parts of his brain are also whole. 



242. Use of speech. The power of speech accounts for 

 the great difference between man and animals. Animals 

 must learn everything through their senses. They can- 

 not tell one another how to do certain things. They 

 cannot tell their knowledge to their young. 



Men know far more things than they have learned by 

 their senses, for they can tell each other. In a short time 

 the father can tell his child what it has taken him a life- 

 time to learn. Children of ten years of age now know 

 much more about some things than men used to know a 

 hundred years ago. Some persons cannot see or hear or 

 speak. They learn with great difficulty, but finally they 

 can be taught to read with their fingers and then they 

 learn as rapidly as others. 



243. Need of a healthy body. Thinking is work, just 

 as running or any other action of the cells of the body is 

 work. In order to think, the cells must get plenty of food 

 and oxygen. The cells of the brain are the first to suffer 

 when food does not digest or the air is foul. A headache 

 and dull feelings are the first signs that something is wrong 

 with the food or air. Anything that makes food digest 

 better, or that causes us to breathe in more oxygen, helps 

 the brain. Plenty of out of door exercise is a great help 

 to the scholar. The best student generally has a strong 

 body. 



244. Sleep. The brain cells work and become tired 

 like any other part of the body. They need rest. Some 



