MODEKN METHODS OF 'STREET CLEANING 



block pavement the ballast used is slightly less in 

 quantity and the particles average f inch in diameter. 

 To prepare it for use on the streets the gravel is 

 washed and freed from foreign matters. It is supplied 

 by a contractor at about $1.25 at the city wharves on 

 the Thames. 



It has been found that large quantities of grit and 

 other refuse interfere with the cleaning operations 

 which go on at night, for it clings to the pavements 

 and can be removed only by water supplied in force 

 by means of a stream from a hose. To meet this diffi- 

 culty an additional gang of flushers is occasionally 

 requisitioned after midnight to flush certain streets 

 which otherwise would have been cleansed by water 

 and squeegees. 



The night cleaning occurs through the week until 

 Saturday. From Saturday midnight to 9 A.M. Sunday 

 about three-fourths of the night staff are engaged in 

 sweeping the streets and removing the refuse collected 

 together by hand and machine brooms, thus leaving 

 the city clean for Sunday. In summer, however, most 

 of the asphalt streets are watered by watering-carts 

 and then squeegeed. On Sunday the night flushers 

 are engaged in washing main streets and courts which 

 receive more than an ordinary amount of refuse and 

 those which are named by the Medical Officer of Health 

 of the Corporation. 



The cleansing of courts is an important feature of 

 the work of the street-cleaning force. The term court, 

 cleansing of ^ may be mentioned, includes lanes, alleys, 

 courts passages, and some less important side streets, 

 as well as small squares and yards, of all of which 

 London has numerous examples. Some of these courts 



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