MAN'S IMPROVEMENT OF HIS ENVIRONMENT 389 



pictures speak for themselves. If such a small experiment shows 

 results like this, then what might a general cleanup of a city show ? 

 Public Hygiene. Although it is absolutely necessary for each 

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

 well, it has also be- 

 come necessary, espe- 

 cially 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. In ad- 

 dition to such a body 

 in cities, supervision 

 over the health of its 

 citizens is also exer- 

 cised by state boards 

 of health. But as yet 

 the government of the 

 United States has net 

 established a Bureau 

 of Health, important 

 as such a bureau 



WOUld be. I n the upper picture a little girl can be seen dump- 



The Functions of a in 8 garbage from the fire escape. She was a 



foreigner and knew no better. The picture below 

 City Board Of Health. shows the result of such garbage disposal. 



The administration 



of the Board of Health in New York City includes a number of 

 divisions, each of which has a different work to do. Each is in 

 itself important, and, working together, the entire machine provides 

 ways and means for making the great city a safe and sanitary 

 place in which to live. Let us take up the work of each division 



