THE NERVOUS SYSTEM 413 



saying, ' I won't count this time! ' Well! he may not count it, and 

 a kind Heaven may not count it; but it is being counted none the 

 less. Down among his nerve cells and fibers the molecules are 

 counting it, registering and storing it up to be used against him 

 when the next temptation comes. Nothing we ever do is, in strict 

 scientific literalness, wiped out. Of course this has its good side 

 as well as its bad one. As we become permanent drunkards by so 

 many separate drinks, so we become saints in the moral, and au- 

 thorities in the practical and scientific, spheres by so many separate 

 acts and hours of work. Let no youth have any anxiety about 

 the upshot of his education, whatever the line of it may be. If 

 he keep faithfully busy each hour of the working day, he may safely 

 leave the final result to itself. He can with perfect certainty count 

 on waking up some fine morning, to find himself one of the com- 

 petent ones of his generation, in whatever pursuit he may have 

 singled out." James, Psychology. 



COLLATERAL READING 



Physiology Textbook, Colton, pp. 254-298; General Physiology, Eddy, 

 pp. 382-428; Applied Physiology, Overton, pp. 266-275; Human Mecha- 

 nism, Hough and Sedgwick, pp. 266-288; Human Body and Health, Davi- 

 son, pp. 215-236; Studies in Physiology, Peabody, pp. 253-290; Human 

 Body, Martin, pp. 230-262; Elementary . Physiology, Huxley, pp. 475- 

 551; High School Physiology, Hughes, pp. 214-234. 



SUMMARY 



Reason for Special Training of the Brain. 

 General Function, Control. 

 Parts of Nervous System. 



1. Brain. 



Cerebrum, location, size, shape, surface, character of substance. 



Functions, intelligence, will, thought, sensation, voluntary 



motion. 

 Cerebellum, location, size, surface. 



Function, muscular coordination, for voluntary acts. 

 Medulla (spinal bulb), location, size. 



Function, control of respiration, circulation, etc. 



2. Spinal cord, location (cf. spinal column). 



Functions, nerve connection. 

 Reflex control. 



