QUESTIONS 219 



the age when special choices were made ? What report did Dr. 

 Gulick study in the Eleventh Census of the United States ? What 

 did he do next ? What do the tables show about the average age 

 of prisoners ? What is the average duration of sentence of the 

 American male prisoner ? What, then, is the average age at which 

 he enters prison ? In closing, what does Dr. Gulick say about the 

 age at which individuals take to criminal life ? Which period of 

 human life is most full of fateful import ? When the era opens, what 

 is the condition of the individual ? When it ends, what has the 

 child become ? What kind of reading and study do boys most enjoy 

 between the ages of fourteen and twenty ? Why do many boys begin 

 to smoke during this era ? During which years does a girl grow more 

 attractive more womanly and gracious ? What is the period of 

 special instability ? Why is it called the storm-and-stress period ? 

 What should receive special attention during the adolescent years ? 

 During what years is a man deciding his destiny ? While he de- 

 cides his own fate and forms his own habits, what is he doing for 

 his descendants ? 



CHAPTER XIX 



How many boys helped Dr. McKeever in his experiments? 

 What were their ages ? Why did Dr. McKeever need the help of 

 these particular boys ? What was he trying to decide about the use 

 of tobacco ? What machine did he use ? What records does the 

 sphygmograph keep ? Where is it fastened to the body ? On what 

 does its needle make a record ? When were the records taken ? 

 What did they explain ? Give the first statement ; the second state- 

 ment. What does the first diagram show ? the second diagram ? 

 Compare these, line by line, with the third diagram. What does the 

 heartbeat indicate about the changing feelings of the boy ? What 

 parts of the body are benefited when the heart makes its best record ? 

 Why are they benefited ? What was done with the sphygmograph 

 while the different records were being taken on the same boy? 

 How long did this unusual vigor last ? Then what happened ? What 

 is the objection to slow-moving blood and a low heart record? 

 What parts of the body suffer ? How long will the slow-pumping 

 heart stay in charge of the slow-moving blood of the smoker ? What 



