MODERN METHODS OF STREET CLEANING 



steam for producing electric light, to pump sewage or 

 water, to operate machines, and for other purposes. 

 The residue is used for many purposes, such as the 

 making of concrete, mortar, bricks, and asphalt pave- 

 ments. 



On reviewing the different subjects thus briefly 

 covered it seems desirable that I should mention par- 

 ticularly a number of points which go far to 



Conclusions 



account for good results in Europe. Most of 

 these points have a general application to American 

 conditions : 



(1) Centralization of responsibility for the repair and 

 cleaning of street pavements is desirable. 



(2) A competent person should be at the head of the 

 street-cleaning department preferably an engineer ex- 

 perienced in sanitary work. 



(3) An organization somewhat military in character 

 is best. But it is unnecessary that the military spirit 

 should be carried beyond the point required to fix 

 responsibility and insure a proper execution of orders. 



(4) Good pavements in good repair are indispensible 

 to efficiency and economy in street cleaning. 



(5) Asphalt is the easiest pavement to clean, but the 

 hardest to keep looking well because it will not hide 

 dirt. 



(6) It is possible to clean streets without the use of 

 water, but the results are only measurably satisfactory 

 in most instances. For the best work there should be 

 sufficient water used to carry off the finer dust by the 

 use of water from a hose preceded by thorough lubrica- 

 tion with water from a sprinkling cart. 



(7) Sewers should be used to carry away all street 

 refuse and sand which can be put into them without 



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