876 



VETEEINAEY HYGIENE 



We are considering cesspits and liquid manure tanks 

 together, for though known by different names they are 

 identical, one being the farm cesspool, and the other the 

 cesspool of the ordinary residential house. It is with the 

 former that we have to deal and to discuss how it can best 

 be arranged. 



The drainage from farm stables, cow-sheds, piggeries, and 



covered yards, constitute one of the farmer's sources of 



income. It is imperative in the case of cow-sheds that the 



drainage shall be on the most approved principles, surface 



throughout, and no traps of any kind within the building. 



This is on account of the milk supply, and the facility with 



which it can become contaminated in a defectively drained 



place. 



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I ' ' 





Fig. 165.— Fixed Syphon Trap for 

 Stables, with removable bucket 

 for catching solids. 



'< 10— -> 



Kg. 166.— A Gully Trap. 



The urine in a cow-shed is discharged by the animal 

 practically direct into the surface drain and the bulk of 

 the faeces find their way there also ; what fails to reach 

 the drain is swept into it, and the whole contents pass out 

 of the shed into the outside air. It should then pass into a 

 concrete receptacle, 12 feet from the building, one for either 

 side of the byre (Eig. 130), from which it is removed by 

 pumping into the liquid manure cart, and from this 

 deposited either in the covered shed for manure, or dis- 

 charged into the liquid manure tank. 



This carriage by hand may be modified by the cow-shed 

 surface drains opening over a properly trapped drain 12 feet 

 away from the building, and the urine and suspended fseces 



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