428 



HEALTH AND DISEASE 



All the foregoing rules are important. The results which may 

 be obtained by following them depend largely on the thorough- 

 ness with which they are followed. This is true especially of 

 fresh air and mastication. If all the rules are followed and 

 followed thoroughly, including the one most commonly neglected, 

 namely, keeping within the fatigue limit, the average man 

 may reasonably expect to double his length of life, his activity 

 per day, his satisfactions and his usefulness. The laws of 

 " humaniculture " can be depended upon as much as those of 

 agriculture, horticulture, or s,tock raising. 



Public Hygiene. Although it is absolutely necessary for each 

 individual to obey the laws of health if he or she wishes to keep 



from disease, it has also 

 become necessary, es- 

 pecially in large cities, 

 to have general super- 

 vision over the health 

 of people living in a 

 community. This is 

 done by means of a 

 department or board 

 of health. It is the 

 function of this de- 

 partment to care for 

 public health. A list 

 of regulations and laws 

 known as the Sanitary 

 Code is given out to 

 the citizens. These 

 regulations concern the 

 care of buildings and 

 plumbing, of the clean- 

 liness of street cars 

 and other public vehi- 

 cles, the protection and 

 supervision of foods sold, the inspection of our supplies of milk 

 and water, and particularly, the control of disease. 



Examples of what public control of disease will do is seen when 



-400 



-300 



100 



1850 1860^ 18TO 1880 1890 19001906 



The curve showing a decreasing death rate from tu- 

 berculosis. Why do fewer people die from the 

 disease than formerly ? 



