86 C. A. Joy on Glucinum and its Compounds. 
6. By digesting fifty parts of beryl in thirty parts of sulphuric acid, — 
and fusing with one hundred = ig of ferrocyanid of potassium and 
seventy parts of chlorid of sodium 
By fusing beryl with fluor s spar 
8. By fusing beryl with half its weight of caustic lime. 
9. By fusing beryl with litharge. 
10. By fusing beryl] with binoxyd of mangane 
11. By fusing beryl x three parts of isbobale of potassa and two 
parts of carbonate of s 
12. By fusing beryl with two parts of carbonate of potassa. 
chlorine gas.—Finely pulverized beryl was intimately 
mixed with lamp-black and linseed oil, and calcined. Chlorine 
S was passed over it at a red heat in a porcelain tube, and the 
more volatile chlorids of silicon and iron driven into the re-— 
ceiver. The chlorids of glucinum and aluminum were collected 
in the farther end of the tube. The beryl was Somelensy de- 
composed. An unsuccessful attempt was made to take advan- 
‘age of the difference in the points of ale slention of the chlo- 
rids of iron, silicon, aluminum, and glucinum, in order to sepa- 
rate them 
2. By hydrofluoric acid.—This well-known method w : 
for comparison, and, where the bery! was finely see ts was 
entirely successful. ‘he glucina was separated from the alumina — 
. by carbonate of ammonia. 
. By fluor spar.—This method was proposed by Scheffer.’ 
Seven parts of beryl, thirteen parts of fluor spar, and eighteen — 
as arts of concentrated sulphuric acid were gently heated in a+ 
eaden trough under constant stirring, for two hours, and then — 
transferred to an iron vessel, and heated sufficiently to expel the — 
fluorid of silicon and the excess of sulphuric acid. e dec come 
position is fully accomplished in this way, and the only objec: 4 
tions to it are the presence of so much sulphate of lime in the — 
—— and the difficulty in expelling the excess of ere : 
ans mney wah nine pe of fluorid of ¢ Sakis call y 
ma in a capacious platinum crucible, and fused at a low reé 
heat. The mass was covered with an excess of sulphuric 
* Ann. Chem. Pharm., cix, 144. 
es 
