ALCOHOL, NARCOTICS, AND THE HUMAN MACHINE 395 



While tobacco may not seem to do any great harm to 

 smokers, it does harm people in the long run. One 

 Russian investigator compelled certain rabbits to smoke 



A study made at Yale University showed that 5 per cent of the honor men, 60 per 

 cent of the average men, and 73 per cent of the failures were smokers. 



cigarettes for periods of from 6 to 8 hours daily, with the 

 result that some of the rabbits died within a month's time, 

 showing heart changes. Others developed tolerance for 

 tobacco like human smokers, but when they were killed, 

 they showed degeneration of the blood vessels. Doctors 

 who have made a study of the effect of tobacco on the 

 human system find that cigarette smoking causes an 

 increase in the heart rate and a heightened blood pressure 

 which indicate the effect of the poison. The fact that 

 heart trouble is increasing in this country makes us wonder 

 if it has anything to do with the increase in the use of 

 cigarettes which has taken place since women have taken 

 up smoking. 



Smokers Do Not Have as Good Chances at Athletics. 

 While a smoker may not have smoker's cough or may not 

 seem to show any loss of mental efficiency, yet studies of 

 mental and physical efficiency indicate that the smoker is 

 at a disadvantage. Certain statistics were gathered by a 

 professor at the University of Utah in which he grouped 

 students competing for places on the football teams in six 

 institutions into groups of smokers and non-smokers. 

 He found that only half as many smokers made the teams 



