890 PARKS 



any person distribute any circulars, cards, or other deposit any bottles, tin cans, broken glass, paper, 



written or printed matter, in any park or parkway." clothes, sheet iron or any rubbish within the limits of 



(Ordinance No. 32, 703, Section 6, Columbus, Ohio.) said public parks." (City of Pasadena, California, 



"It is hereby declared to be unlawful: To throw or Ordinance No. 539, Section 20.) 



Sand boxes or courts. Good drainage of sand courts is the basic sanitary 

 measure. For courts constructed of boards, a pit underneath from two to 

 three feet deep, filled with coarse cinders, provides excellent drainage. The 

 same plan may be followed in the construction of sand courts with con- 

 crete walls but without concrete floors. If a concrete floor is used it should 

 rest upon a foundation of cinders with one or more drainage vents through 

 the floor. The sand should be washed frequently in order to remove impuri- 

 ties and raked frequently to remove bits of paper, pieces of food and other 

 debris that inevitably collect in sand courts. It is advisable to change the 

 sand completely once or twice a season. The old sand can be used in jump- 

 ing pits or under different pieces of apparatus. While it is desirable to have 

 shade for the comfort of the children the sand court should be located so 

 that at some time during the day the sand will be exposed to the direct 

 rays of the sun. Under certain circumstances a removable canopy may be 

 used to secure this desirable condition. In some sections of the country 

 fleas become a pest in sand courts. An application of a weak solution of 

 bichloride of mercury will prevent them from frequenting the sand. 



Wading pools. Wading pools that are used intensively each day should 

 be emptied completely at least once during every twenty-four hours, scrubbed 

 and refilled with pure, clean water. It is advisable also, from time to time, 

 to allow the empty pool to bake in the sun. As in the case of swimming 

 pools chemical treatment of the water may be resorted to. The chemicals 

 ordinarily used for this purpose are chlorine and copper sulphate. However, 

 because the children inevitably carry large quantities of sand and dirt 

 into the pool during the course of the day it is almost a necessity to empty 

 the pool each day and clean it of the dirt and sand, making it seldom neces- 

 sary to use chemicals. The playground instructors should take special note 

 of any children on the playground having any infectious or contagious 

 disease and prevent them from making use of the pool. The growth of 

 algae in the pool may be prevented by use of copper sulphate or bluestone. 

 This may be applied in the following manner: Pulverize the bluestone to 

 a powder, sprinkle on bottom of pool and use sprinkler or garden hose to 

 dampen it; then sweep until entire floor and sides are covered with a thin, 

 pale blue color. Algae are not detrimental to health but cause a slippery 

 condition which might lead to accidents. 



