314 On the Manufacture of Muscovado Sugar. 



and clear, to yield sugar emulating if not equalling ordinary 

 coarse lump sugar, for general use, without abatement of the 

 described celciitv in the transition from the raw juice to 

 sugar. For, in a just comparison of sugars to be used ceco- 

 nomically, we are to advert, not nierelv to the degrees of 

 whiteness, which may be varied by the size of the grain, but 

 chiefly to the cleanness of equal solutions, and the sweeten- 

 ing effects of portions equal in dryness and in weight. 



The conmion use of yellow sugar-candy, on the continent 

 of Europe especiallv, shows that it is not the colour of good 

 Muscovado sugar which has impeded the consumption of it 

 in the crude slate. It is truly the filth which appears in a 

 .solution of it, which has forbidden the culinary use of it, 

 and depreciated it so far below lump sugar; and it is in con- 

 sequence of the cleaning by filtration, rather than by reason 

 of the blanching by breaking the grain and by claying, that 

 the lump sugar has such preference and greater price. 



It is this filth, also, which compels the sugar refiner in 

 Europe to use ox blood in quantity proportionate to the im- 

 purilv of the Muscovado sugar ; and to encounter the labour 

 and waste attending the abstraction of the sweets from the 

 abundant scum, consisting of the heterogeneous matter en- 

 tangled in the filaments 'of coagulated blood ; and it is the 

 chief cause of his inability to give a price for dry Muscovado 

 sugar, nearer to that at which he sells the ordinary lump 

 sugar. 



Of the Improvement of Filtration. 



It will therefore be the first of all services for this island, 

 and it will be the most desirable character of Jamaica sugar, 

 that it he made clean by the mere means of lime ami filtra- 

 tion, which are emploved in the manufacture of the finest 

 lump sugar; and, until this character is established, little or 

 nothing ouirht to be said concerning the other tempers and 

 expedients which may be advantageously used in particular 

 circumstances. 



As the true meaning of the word filtration is not under- 

 stood by all, and doubts and controversies may arise from 

 the mere abuse or misconception of the term, it is expe- 

 dient that it should be defined in a manner suitaWe to all lh« 



\vorkmen* 



