DRAINAGE 227 



The price of the various articles, as manufactured and sold by the 

 proprietor of the St. Pancras Iron Works, is as follows ; — 



s. d. 

 Patent wrouglit-irou stable guttering, according to tlio iialtoiu 



engraved, open, per foot 2 6 



Ditto, ditto, covered 2 9 



Recently great improvements have been made in the form of stench- 

 traps, and some makers have succeeded in doing away with the objections 



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WROUGIIT-IRON OPEN GUTTER. 



to which the bell-trap was liable. The engraving shows such an one, 

 where a movable pan or basket of iron is made to collect solids, and 

 prevent them entering the drain, and where a luted cover gives ready 

 access to the drain, in case it should become obstructed ; the trap in this 

 case is large and fixed. 



Common bell-traps cost from 5s. to lOs. according to size, and the 

 patent syphon-traps from 15s. to 25s. 



There is no detail of stable building which has made more advance 

 of recent years than the construction of the floor, and many plans re- 

 commended by authorities a few years ago are now never used in good 

 stables. The essentials are impermeabiKty, permanence, and a good 

 foothold. The first can never be got if sand or common lime-mortar 



PATENT BASKET TRAP. 



is used to bed and grout with. A foundation of good concrete 6 

 in. thick should be first laid. If Portland cement is used for this, 

 and I recommend it, one part to six of clean gravel or broken brick or 

 stone should be the proportion. On this 1 in. of cement should be 

 laid as a bed for the bricks. The bricks must be very hard, but not 



