DISPOSAL OF EXCEETA Sfil 



and in this way the floor of stalls and boxes could be laid 

 perfectly level, the increasing depth of groove from side to 

 centre and front to rear being depended upon to carry off 

 the fluid. 



The open channel running behind the horses which 

 receives the drainage from stalls and boxes is made shallow 

 and moderately wide ; a foot in width in a small stable is 

 amply sufficient, and a depth of 1^ inches in the centre 

 should be enough to keep the contents together. 



The surface drain is led outside the stable, and it must 

 therefore have a fall. In a long stable the fall should be 

 from the centre to both ends, in a short stable it need only 

 be in one direction. The surface drain having passed out- 



Fig. 146. — Floor laid with the Paving Buck shown m Fig. 88, and Iron 

 Surface-drain. 



side the stable, is carried twelve feet clear of it, and dis- 

 charges into a trapped gully, which empties its contents 

 into the sewer pipe. 



It will be observed that by this system of surface drainage 

 the interior of the stable or cow-shed is not in communica- 

 tion with the drains ; it is an ideal sanitary system for all 

 stables, especially those where a large number of animals 

 are brought under one roof. A plan of the system for a 

 large stable maybe seen in Fig. 117, while Fig. 130 shows a 

 similar arrangement for a cow-house. 



Sometimes surface drains are made to discharge their 

 contents into traps situated within the stable, but this 

 helps to destroy the value of the system. 



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