MODERN METHODS OF STREET CLEANING 



the dust, but the dirt which falls upon the pavement 

 is removed only by wind, rain, and other natural 

 agencies. If the garbage is collected by scavengers, 

 it is removed at the private expense of the house- 

 holders. The kitchen waste is generally taken to small, 

 dilapidated farms and, after more or less overhauling, 

 it is fed to hogs. This progress is generally filthy and 

 unsanitary. The young city may now be said to have 

 passed through its period of infancy and reached its 

 period of youth. 



A sewerage system is built later in the town's growth, 

 often long after the place has begun to call itself a 

 city. During this period of development, the houses are 

 gradually built closer and closer to one another until 

 they stand in immediate contact. More attention is 

 given to the pavement of the streets. Macadam is laid 

 and sometimes brick; stone and asphalt come later. 

 The ditches at the sides of the streets which formerly 

 served as drains under the name of gutters are now 

 eliminated and the storm water is collected from the 

 well-graded streets through catch-basins into the sewers. 

 For convenience in final disposal, the storm water and 

 house sewage should be carried away separately, but 

 they are usually removed in a combined system of 

 sewerage. 



The streets are not yet systematically cleaned. Dirt 

 is often allowed to collect until the pavement is hidden 

 from sight. Garbage and ashes are generally removed 

 at public expense by contract. Sometimes the wastes 

 are separated into two parts by the householders so 

 that the refuse of the kitchens may be collected sepa- 

 rately from the ashes and other wastes, and sometimes 

 all the wastes are collected in one receptacle. If the 



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