464 Scientific Intelligence, [Junz, 
of all the simple gases is the same, and that the specific heat of 
simple solids is proporiional to their capacity for oxygen. These 
laws, if well founded, may be justly classed among the most 
important developed by modern chemistry. 
Il. Euclase. 
Berzelius has lately subjected this beautiful and scarce mineral 
to a more accurate analysis than that of Vauquelin, who sus- 
tained a loss of 21 per cent. The result of Berzelius’s analysis 
is as follows : 
HECG stain loka atv diate » igteakensne er es 
Palanan di con. 5 aac erates ase Suelo UTD. 
lp aera eee eat io: 73 
CURING OE ALOT Sa oesmrnwimes ae 2:22 
OTe, OF PIE 5 i vei icruaretiretbe ude. 0:70 
98°58 
From this analysis, Berzelius concludes that it is a compound 
of one atom of silicate of glucina and two atoms of silicate of 
alumina. . 
Vauquelin’s analysis gave the following constituents of this 
mineral : 
Silieaciacts Herth. Las Leena meag ‘p00 
Alumina. .... a baal aE sg ore 
AGT od oh PS bin alalhiefecckee eee Ws) 
Oxide ofiron...... cain etd ahi die alge 
BSB, cts 6 Bye eg wattle ya cbnOeOe 
100 
III. Iron Ore of the Isle of Elba. 
Crichtonite possesses a peculiar metallic lustre, which belongs 
also to the iron ore from the island of Elba. This circumstance 
led Berzelius to suspect the existence of titanium in this latter 
ore. On making the experiment, he found his conjecture veri- 
fied. The presence of titanium in this ore indeed may be 
‘discovered by the blow-pipe. Dissolve before the blow-pipe a 
hitle of the Elba ore in the double phosphate of ammonia and 
soda, and then reduce it completely by exposing it to the inte- 
rior flame of the blow-pipe. The colour of the iron disappears 
almost entirely during the cooling, and at the instant that the 
globule becomes solid there appears a reddish orange colour, 
which is owing to the presence of titanium or wolfram. Berze- 
hus ascertamed that in Elba iron ore it was titanium which was 
present. 
IV. Yellow Oxide of Uranium of Autan. 
From an analysis of this ore lately made by Berzelius, it fol- 
lows that it is a uranate of lime containing a great deal of water 
of crystallization. That of Cornwall is the same combination 
coloured by arseniate of copper. 
