138 PRINCIPLES AND PRACTICE OF MILK HYGIENE 



the ceiling should not be over 10 feet high; for 30 cows, 

 not over 12 to 15 feet; more than 30 cows, not over 16 

 feet ( Rievel ) . The length and width of the stable should 

 be such as will provide sufficient floor space to accom- 

 modate the cows comfortably and to make it convenient 

 to milk and care for them. When the cows stand facing 

 the centre of the stable, the alley or passageway in back 

 of them should be of sufficient width to permit the passage 

 of a man carrying a pail of milk without the pail touch- 

 ing or coming too near the cows. To meet this require- 

 ment it is necessary for the passageway to be at least 

 3 feet wide, the milk pail being carried on the side of the 

 milker farthest from the cow, but a width of 5 or 6 feet 

 is much better. A narrow passageway back of the cows 

 makes it difficult to keep the wall clean. The passageway 

 between two rows of cows standing tail to tail should be 

 at least 8 feet wide; it can hardly be wide enough to 

 prevent milk carried in a pail between the cows from be- 

 ing contaminated by the dust dislodged by the switching 

 of the tails. There is also danger of contamination from 

 splashing urine and manure. 



To provide 500 to 600 cubic feet of air space per cow 

 the floor space, with a 9-foot ceiling, may be distributed 

 as follows: 



Feed alley 4 feet 



Manger 1% to 2 feet 



Platform 4% to 5% feet 



Gutter 16 inches 



Alley in rear of cows 5 to 6 feet 



The total of these dimensions would be 18 feet. Al- 

 lowing 3% feet for the width of the stall, there would be 

 63 square feet of floor space for each cow, which, with a 



