THE BRAIN 125 



how pleased we felt when we heard the band play,- and 

 how our ears ached when we were out in the blizzard. 

 We can also remember the messages which the brain has 

 sent out. Thus we remember how hard we had to run to 

 catch the train, and that we had to make our arms move 

 in a certain way in order to throw a stone against a mark. 



237. Association of cells. Each cell in the brain is con- 

 nected with all the other cells through the nerve threads 

 of the white matter. So when we remember one thing we 

 at once think of something else about it. Thus one set 

 remembers that it saw a field of large ripe blackberries ; 

 another set of cells remembers how good these tasted ; 

 another set remembers hearing a dog make a great noise ; 

 and still another set of cells remembers how fast it made 

 the legs run to take the body away from the berries. 



238. Thinking. The minds of all animals can feel as 

 well as a man's mind, or better, and can often make their 

 bodies move more swiftly and more gracefully than man's. 

 But the mind can do more than feel and cause the body 

 to move. It can think about what it remembers. It thinks 

 that some things were right and some wrong, or that we 

 could have done better if we had acted in a different way. 

 It plans to do things better next time. An animal does 

 very little thinking; so we say that it has no mind. It 

 seldom plans ahead and does not learn new things easily. 

 Yet some dogs and horses use almost as much thought as 

 some men. 



239. Where thinking is done. Thinking is done by the 

 cells of the brain behind the forehead. Animals have 

 very small foreheads, and so their minds cannot think to 

 any extent. While most of the cells of the brain can act 

 from the time a child is born, the thinking cells must be 

 taught how to act. Boys and girls go to school so as to 



