Water Supply. 187 



close and perforated or grated doors being adjusted 

 to this for use as required. 



The most important consideration in the selection 

 of the site of the pulping-house is an ample supply 

 of water, which is required in considerable quantity 

 for both the operations of pulping and washing, 

 and should also be available, if possible, as a motive 

 power for the whole of the machinery. 



The building should, therefore, be erected in the 

 vicinity of some large stream, or at any rate in such 

 a situation that water may be conveyed to it at a 

 level at least 10 feet above that of the platform on 

 which the machinery is to stand ; this will admit of 

 an over-shot water-wheel of 20 feet diameter (with 

 its axle resting on the level of the platform) being 

 employed to keep the pulpers,&c.,in motion. Where 

 there is no large stream which can be requisitioned 

 for these purposes, its absence must be compensated 

 for by a dam of adequate dimensions. 



The operation known as " pulping" consists in 

 the separation of the skin or pulp of the cherry 

 from the seeds or beans it contains. This is per- 

 formed by a machine the oldest and most common 

 form 'of which is as follows : Suppose a framework 

 of iron or wood some four feet in height, the same 

 in length, and two feet wide. Across one end of 

 this, and at about two feet and a half from the 

 ground, a cylinder rests on its axles ; it is covered 



