3o6 MILK AND THE PUBLIC HEALTH chap. 



suflBcient for all such purposes as may from time to time be 

 reasonably necessary. 



(2) He shall cause any receptacle which may be provided for 

 such water to be emptied and thoroughly cleansed from time to 

 time as often as may be necessary to prevent the pollution of an}' 

 water that may be stored therein, and where such receptacle is 

 used for the storage only of water he shall cause it to be properly 

 covered and ventilated, and so placed as to be at all times readily 

 accessible. 



Part II. 



The regulations in Part L, and also the following regulation, 

 shall apply to all cowsheds other than those the cows from which 

 are habitually grazed on grass land during the greater part of the 

 year, and, when not so grazed, are habitually turned out during a 

 portion of each day. 



8. A cowkeeper shall not cause or allow any cowshed in his 

 occupation to be occupied by a larger number of cows than will 

 leave not less than eight hundred feet of air-space for each cow. 



Provided as follows : 



(a) In calculating the air-space for the purposes of this 

 regulation, no space shall be reckoned which is more 

 than sixteen feet above the floor ; but if the roof or 

 ceiling is inclined, then the mean height of the same 

 above the floor may be taken as the height thereof for 

 the purposes of this regulation. 



(h) This regulation shall not apply to any cowshed con- 

 structed and used before the date of these regulations 

 coming into effect, until two years after that date. 



Part III. 



9. In this part, the expression " Dairy " means a dairy in which 

 cattle are not kept. 



Lighting. 



10. Every cowkeeper shall provide that every dairy in his 

 occupation shall be sufficiently lighted with windows, whether in 

 the sides or roof thereof., 



Ventilatiuv. 



11. Every cowkeeper shall cause every dairy in his occupation 

 to be sufficiently ventilated, and for this purpose to be provided 

 with a sufficient number of openings into the external air to keep 

 the air in the dairy in a wholesome condition. 



Cleansing. 

 12. — (1) Every cowkeeper shall cause every part of the interior 

 of every dairy in his occupation to be thoroughly cleansed from 



