318 On the Manufacture of Muscovado Sugar. 



tity retained when the bag becomes stuffed and clogged with 

 fihh is too inconsiderable to deserve notice, even if the wash- 

 ings were not to go to the still-house. For the described 

 pressure of the slender column of the liquor is, or may be, 

 made competent to squeeze the filth with a force equal to 

 that of one, two, or three tons weight, and to reduce it to the 

 consistency of douffh, if that were necessary. 



The cloth which answers for this purpose by its closeness, 

 and durabilitv, and cheapness, is a kind of flannel called 

 double swanskin: it is sewed to form a bag: the bag is 

 placed flat between two reeded or fluted faces of wood : the 

 mouth of the bag is perfectly closed, by giving it one fold 

 or fell to be compressed by the reeded faces. The liquor is 

 supplied from the slender pressing column by a small stop- 

 cock entering a small short lube of swanskin belonging to 

 the bag: by drawing a little of this tube over its orifice, the 

 ligature becomes closer as the pressure of the liquor becomes 

 Greater. 



ft is easy to conceive how quickly such a filter may be 

 slung into its place or removed for washing, or to make way 

 for another that is already washed. 



To prevent fruitless experiments and expenses it is neces- 

 sary to observe, that in any position different from the ver- 

 tical now described, the bag will not act as a filter, and will 

 only strain the liquor, and that, if the reeding be not ver- 

 tical, the filtration will be slow. 



When liquor is to be thrown forward, it is, in the general 

 course of business, to be ladled from the second teach into 

 the instrument, bv the gutter, ofl" which it will run clear and 

 quickly into the first teach. 



When the ladle is held in the usual method, the labour of 

 throwins: the liquor to the described height would be consi- 

 derable : but it becomes uncommonly easy when the hook 

 of a slender pendulous chain or rope is made to sling the 

 handle of the ladle at a spur, marking the proper centre of 

 motion, or the fulcrum on which the ladle is to play, with 

 little effort to the workman. 



At skipping-iime the instrument reserves some filtered 

 syrup to recruit the emptied teach : this is the business of a 



few 



