260 BODY CONTROL AND HABIT FORMATION 



memory, mental work, ability to do physical work, efficiency, acci- 

 dents. 



Conclusion. 1 . What effect does alcohol have upon the nervous 

 system ? 



2. Write a short composition on this subject. 



PROBLEM QUESTIONS 



1. Do you suppose the neurons of a child just learning to walk 

 find it easy to send out exactly the right orders to the muscles? 

 Explain your answer. 



2. Do you consciously think about making steps when you 

 now walk? Why not? (Consult chart.) 



3. In learning to do anything in concert, how does the first re- 

 hearsal compare with the last ? 



4. What is a necessary factor in forming a habit ? Remember 

 that pathways become worn along certain lines so that the neurons 

 in those pathways take up the work instinctively. 



5. Explain this story : " A practical joker saw a discharged 

 veteran carrying his dinner home and suddenly called out, ' Atten- 

 tion ' ; whereupon the veteran instantly brought his hands down, 

 dropping his dinner in the gutter." 



6. What is the advantage of forming good habits in life? 



7. Does habit forming throw work off part of the nervous sys- 

 tem? Explain fully. 



8. How are habits formed? 



9. Write a paragraph on the increased effectiveness and power 

 acquired through good habits. 



10. Is it easy to break a habit? Explain your answer. 



11. Why is a grammar school idler quite likely to continue to 

 be an idler in high school, and a high school idler a college idler ? 



12. Why are the railroads requiring their employees to abstain 

 from liquor? 



REFERENCE BOOKS 



Hunter, Civic Biology, Chap. XXIII. American Book Company. 

 Hunter, Elements of Biology, Chap. XXXV. American Book Company. 

 Hunter, Essentials of Biology, Chap. XXVIII. American Book Company. 

 Angell, Psychology. Henry Holt and Company. 



