842 



PARKS 



bent so that flies can gain access to contents of the pail. The best type of 

 privy box is that depicted in Plate 314, which permits the removal of the 

 receptacle through the top of the box. 



It is essential that the privy box be fly-proof and that the interior be 

 well ventilated. Ventilation is accomplished, as shown in Plate 316, by 

 boring a number of two-inch vent holes on one side of the box and placing 

 a vent flue on the other side. Where two or more seats are built in one 

 privy the vent holes can be placed in the front of the box. All vent holes 

 and the openings of the vent flue are screened with sixteen-inch metal 

 screening. The best receptacle for receiving the excreta is a galvanized 



iron pail or can made of heavy 

 material which will stand fairly 

 hard usage without developing 

 leaks (Plate 317). 



It is very difficult to esti- 

 mate the number of privy seats 

 that should be provided for or- 

 dinary park and recreation area 

 usage. For camps the standards 

 range from the very low min- 

 imum of one seat to every five 

 persons to one seat for every 

 twenty persons. A desirable 

 standard would be one seat to 

 every ten or fifteen persons. 

 Tourists' camps should have 

 practically the same toilet pro- 



The cover should be placed on the can immediately after 

 removal from the privy. 



(Public Health Bulletin No. 89, Lumsden.) 



PLATE No. 317 

 RECEPTACLE FOR USE IN A SANITARY PRIVY 



visions. At picnic places the 

 only way to discover how many 

 seats are desirable would be to 

 study for a period of time the numbers of people making use of the vari- 

 ous picnic centers and make provision accordingly. In the construction 

 of toilets it is desirable that each seat be separated from the adjoining seats 

 by a partition. Plates 318 and 319 show one method of constructing a six- 

 seat privy. The building itself should be made fly-proof by screening doors 

 and windows. 



The disposal of the contents of the sanitary privy may be accomplished 

 in one of several different ways. The pails should be removed and emptied 

 at weekly or semi-weekly intervals, or oftener if necessary. When taken 

 from the privy, the pail should be covered and immediately removed with 

 its contents to the place of ultimate disposal, a clean pail having in the 



