On the Manufacture of Muscovado Sugar. 3 1 1 



lime be a soluble body, and although it meet the acids in the 

 aeriform state, it forms with it quickly an insoluble body 

 similar to whiting or chalk. 



Lime also combines with a triple or quadruple quantity 

 of herbaceous matter to form a compound less soluble than 

 the latter in water ; and in cane-juice, lime meeting car- 

 bonic acid and herbaceous matter, unites with both to form 

 a triple compound. For if the lime used in clarifiers were 

 to unite with the carbonic acid only, we should Hnd bottoms 

 consisting of whiting, which I have looked for, but could 

 never obtain. 



It is by virtue of these relations that a small quantity of 

 lime, or transparent lime water in which the lime can be 

 only —lo^h part of the whole, when added to cane-juice that 

 has been duly cleared, renders it presently turbid with her- 

 baceous matter now extricated, and thus facilitates the abs- 

 traction of this matter by subsidence. Thus, also, cane- 

 juice which is a little wheyey or clouded is broken to floc- 

 culence by transparent lime water as well as by lime. 



I say the liquor is broken to flocculence when the parti- 

 cles of herbaceous matter, seized by those of the lime, and 

 coalescing, appear large and flocculent ; and the liquor in- 

 terceding them is seen quite transparent when viewed by 

 transmitted light in the narrow part of a wine-glass. 



This breaking may also be distinguished in a bright silver 

 spoonful of the liquor by reflected light. 



On these grounds some lime ought to be added to cane- 

 juice which contains the ordinary quantity of herbaceous 

 matter, not with the vain hope of separating all the herba- 

 ceous matter at once, but with the experienced certainty 

 that the liquor yawed or cleansed with the aid of lime, will 

 contain less herbaceous matter in solution than it would 

 otherwise have retained, and will require the less additional 

 lime to act on the melasses acid. 



Towards the kind of depuration which can be effected in 



the process of yawing, lime thus contributes something, but 



not nearly so much as has been generally supposed : for a 



quantity of lime which ii sufficient to giv« a nauseous taste 



U4 to 



