WARM-WATER MACERATION TANK. 59 
working the outlet. This wooden case is lined with sheet 
zinc, fitted closely, and beaten down over the top edges. 
At the deeper end is the outlet, covered with a convex 
rose; the supply tap being at the shallow end. From the 
outlet a 13 inch leaden pipe, regulated by an ordinary 
stopcock, runs directly into the drain, down which, 
previously to emptying the tank, we pour chloride of lime 
and carbolic acid to minimise, as far as possible, any 
unpleasant odour. 
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. Supply pipe to the tank. 
. Stopceock and outlet. 
Hot-water supply pipe from the cistern F. 
. Steam escape. 
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B 
C. 
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. Tap for regulating the hot water. 
The old method of macerating in tubs and earthenware 
jars could never be carried on in comfort in close vicinity 
to dwelling houses, as in carrying the vessels about to 
pour away the water a very considerable odour would 
