142 Portox—On the Extraction of Glucinum from Beryl. 
ammonia, well boiled, filtered, and washed; then redissolved in the least possible 
quantity of hydrochloric acid just precipitated with ammonium sesquicarbonate, 
and then poured into a considerable excess of sesquicarbonate of ammonia, and 
allowed to stand overnight ; and the precipitated alumina was well washed, then 
dried, burned, and weighed. 'The solution was boiled up to separate the glucina, 
and the resulting precipitate washed, dried, burned, and weighed. The results 
of a number of fairly concordant analyses were as follows :— 
Silica, AG a8, a 64°41 
Alumina, oa Be a 18°82 
Glucina, BAL be te 11°65 
Line, ie a ee 65 
Copper, oe x .. a trace 
Ferrous oxide, ue a 1°46 
Magnesia, a not 0G ‘02 
Nickel and zine oxides, ... we ‘74 
Combined water, fa at 1°22 
Alkaline chlorides, Li i 68 
99°65 
There was a slight precipitate with sulphuretted hydrogen, that proved to be 
for the most part copper; and the sulphide of ammonia precipitate, recorded as 
nickel and zinc, was of a somewhat doubtful character, appearing to contain 
something in addition to these elements. 
Subsequently a second lot of 20 Ib. of similar beryl was procured, but was 
not analysed. 
IV. Exrracrion or Guucina. 
After a number of trials, I found that beryl is very easily decomposed by 
fusion with caustic soda, and that a comparatively small quantity of this flux is 
sufficient to effect complete decomposition, so that it is much more convenient to 
use than the mixed carbonates of potash and soda, especially when working on a 
large quantity. 
In one experiment 2000 grams of ground beryl was fused with its own weight 
of caustic soda, in a large Salamander crucible. It gave a good tranquil fusion in 
about one hour, the contents of the crucible being perfectly liquid and pouring 
well. When cold the fused mass was broken up, and ground to pass a sixty-mesh 
screen, then put in a large porcelain jar holding about four gallons, and treated 
with excess of strong hydrochloric acid and well stirred up, the heat generated by 
the reaction bringing the whole mass to the boiling-point, without the necessity 
of external heat. Next day the liquid was decanted off, more hydrochloric acid 
