46 



sub-carbonate of soda. Wicker work'frames on which the 

 bags are to be piled must be provided, they should be made 

 strong- and proportioned to the size of the platform of the 

 press, that is of the same dimensions ; they serve to support 

 tJie piles of bags in their vertical position on the hand wag- 

 on, with which they are removed from the rasp to the press, 

 and are themselves kept in place when on the press by 

 stanchions fixed to the platform of the press at the lower 

 end, the other, sliding through a groove fixed to the frame 

 work. These wicker frames and bags are placed alter- 

 nately under the press, usually to the number of thirty of 

 each. As regards these frames, the caution of the cleanli- 

 ness is renewed, and in a word must be applied to every 

 branch of this manufactory. 



A Reservoir is next to be provided, to receive the juice 

 from the press, to be subsequently conveyed to the defeca- 

 ting boiler, it must be supplied with pipes of communica- 

 tion with the press, and a pump to convey the juice it con- 

 tains to the defecating boiler, it should be placed on a low- 

 er level than the press, and receive the juice by an in- 

 clined plane. It must be made sub£>tantially of wood, and 

 lined with copper, having a concavity in the centre, into 

 which the bottom of the pump mast be inserted, so as to 

 empty it completely. The capacity must of course depend 

 on the extent of the manufactory. 



MODE OF OPERATING WITH THE PRESS. 



When the bags and wicker frames have been piled as 

 before described , alternately to the number of 30 or more 

 of each, on the platform and the stanchions placed, the 

 weight of the pulp alone causes a pretty plentiful flow of 

 juice : if the press used is a screiv press, a workman takes 

 hold of the lever and turns it, then a second man assists 



