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LII. Analyses of the Ashes of Rough Brown Sugar ajid Mo- 

 lasses. By Thomas Richardson*. 



TOURING some inquiries which I had occasion to make in 

 ■*-"^ the manufacture of an artificial manure for the sugar- 

 cane, it was necessary to know the composition of the ash of 

 coarse brown sugar and molasses as imported into this country. 

 The results may be interesting to some of the readers of your 

 Journal. 



I. Rough Brown Sugar. 



20648 grs. in its ordinary state left 2*74' grs. ash =1*33 

 per cent. 1 43*05 grs. of ash furnished 18*16 grs. silica, and 

 4*75 grs. carbonic acid. 



28-61 grs. of ash furnished 8-43 grs. SOg BaO =2*89 grs. 

 sulphuric acid. 



28'61 grs. of ash furnished 0'19 gr. oxide of copper. 



28*61 grs. of ash furnished 1*95 gr. peroxide of iron. 



28-61 grs. of ash furnished 7*00 grs. COg CaO =3-92 grs. 

 lime. 



28*61 grs. of ash furnished 7*81 grs. P052MgO =2*86 grs. 

 magnesia. 



16*12 grs. of ash furnished 7*36 grs. CI2 Ag = 1*96 gr. 

 chlorine. 



28*61 grs. of ash furnished 28*61 grs. chlorides of alkaHes, 

 and this yielded 33*88 grs. of the double chloride of platinum 

 and potassium =10*34 grs. chloride of potassium = 6*53 grs. 

 potash, leaving 4*16 grs. chloride of sodium = 2*20 grs. soda. 

 The ash also contained a trace of oxide of manganese. 



The result of the analysis is therefore — 



Potash 22*84 



Soda 7-69 



Lime 13-69 



Magnesia 1000 



Peroxide of iron . . . . 6*11 

 Oxide of copper .... '66 

 Oxide of manganese . . . trace 



Sulphuric acid 10-12 



Silica 12*68 . 



Carbonic acid 2*32 



Chlorine 12-20 



98-31 

 * Communicated by the Author. 



