CANE SUGAK. 



Grins. 



Weight of vessel and stopper empty ..... ._-?*'. 41 6 '35 



,, ,, ,, and water ........ 2163-40 



,, water ............... 1747*05 



,, vessel, stopper, and massecuite ...... 2645 '95 



massecuite ......... ..' .. 2229-60 



,, vessel, stopper, massecuite, and water .. 2875*95 



,, water above massecuite ....... 230 



,, water in space occupied by massecuite . . 151 7 '05 



2229-60 

 Apparent specific gravity of massecuite ...... 517-0" ~ 1*^69 



In using this method no attempt is made to remove imprisoned air-bubbles, 

 the object of the determination being to facsimilize the actual working of the 

 factory. 



An accurate determination of actual specific gravity of a massecuite can 

 be made by this method, using instead of water an indifferent material such 

 as oil. This is introduced into a wide-mouthed vessel similar to the one 

 already described ; an oil of already determined density is poured over it, and 

 the two mixed until air-bubbles are no longer seen to rise. The stirrer may 

 conveniently be a piece of iron rod, of such a length that it may remain in the 

 vessel without interfering with the insertion of the stopper. After removal of 

 the air-bubbles the vessel is filled up with oil and the determination completed 

 as above. An example follows: 



Grins. 



Weight of vessel, stopper and stirrer ........ 453*75 



,, and oil ...... 1838'35 



Specific gravity of oil (water 1-0) .......... -8550 



Weight of oil .................... 1384-95 



,, vessel, stopper, stirrer and massecuite . . 2548*35 



,, massecuite ............... 2095*65 



,, vessel, &c., massecuite and oil ...... 2743*20 



,, oil above massecuite ........... 194*85 



,, oil in space occupied by massecuite . . 1190' 10 



2095-65 

 Real specific gravity of massecuite X '855=: 1*5056 



In technical control the density of a massecuite or molasses is often 

 determined by dilution and taking the degree Brix of the diluted material. 

 An example will make the method clear ; 250 grms. of a massecuite dissolved 

 in water and made up to 1000 c.c. stand at 20*8 Erix; the total solids present 

 in the 1000 c.c. and also in the 250 grms. of material used are then -208 X 

 1077-4 =. 224*1 ; whence the percentage of solids or degree Brix of the masse- 

 cuite is 89*64, corresponding to a density of 1*491. The water per cent, in 

 the massecuite is, of course, the difference between 100 and the total solids 

 in this case, 10*36 per cent. 



484 



