276 Correspondence of J. Nickles. 
finery, after which it is put into forms for crystallizing. We thus obtain, 
at once, sugar equal in quality to the finest sugars of commerce. 
more advantageously still if he would apply the process suggested by 
Gibbs, which consists in reducing the sulphate by the gas of the re- 
finery. The sulphuret of baryum possesses equally the property of 
precipitating the sugar, only there are two equivalents of sulphur when 
one of oxygen would suffice. In fact, this last case gives, 
Sugar+-BaO+HO= Saccharate of BaO+-HO, 
whilst the sulphuret affords, 
Sugar+2SBa+HO= Saccharate of BaO, SH, SBa. 
generated with each operation. In fact, the waters after washing are 
collected in boilers, evaporated, and the product then calcined in a re- 
verberatory furnace with some chalk or lime, and fused. The fused 
tioned above the general process by means of which MM. Leplay and 
