H. Rose on a new mode of preparing Aluminium. 167 
outside of the crucible. The crucible may be nsed repeatedly 
or new operations; thongh fivally it will fall to pieces, in con- 
sequence of the blows applied. 
The fused mass is treated with water. Usually no gases or 
only inconsiderable and hardly perceptible quantities of gas are 
evolved. The small amount of hydrogen given out has the same 
Unpleasant odor as the gas forming during the solution of iron in 
hydrochloric acid. ‘The carbon comes from the minute portion 
of naphtha which adheres to the sodium even after drying. 
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he sinall globules of aluminium can be fused together ina 
small covered porcelain crucible under a cover of chlorid of po- 
tassium by means of a blow sipe. Attempts to unite them with- 
out the use of the crucible never succeed. ‘I'he small globules 
lost by fusion under chlorid of potassinm 0-05 er 
of potassium after being dissolved in water, did not show any 
alumina, a> small quantity of which however separated undis- 
& solved. Another part of aluminium unquestiovably decomposed 
