114 Scientific Intelligence. 
or in water, even when the latter is brought to the boiling point. Hy- 
drogen reduces the oxyd to a metallic powder, which cannot be fused in 
the bulb-tube. On charcoal, before the blowpipe, it oe easily, and, 
while retaining a lustrous mebatien surface, colors the flame blue, and cov- 
ers the coal with a coating, which is dark yellow while hot, and lighter 
ellow on ‘cool ing: the hs 0 is volatilized with difficulty when treated 
reases the dake of the acbinion, Dissolves rapidly in satis goes even 
when cold and dilute. The hydrated oxyd is completely precipitated 
of a slimy consistence so sat it adheres to the sides of the vessel; the 
presence of tartaric acid prevents this precipitation. The ox d is white 
when cold ; on heating it is pica dark ye oes w. pulpnaare eat ae 
ea 
carbon in a stream of chlorine gas, forms white crystalline scales, is very 
volatile, attracts apr psr with rapidity, and deliquesces. The hydrated 
chlorid is, for the most part, decomposed by evaporation, leaving a residue 
of oxyd of sodiaeh or basic chlorid. The sulphate of indium crystallizes 
with difficulty in indistinct scales. Carbonate of soda throws down fro 
acid solutions a pisa6: granular carbonate of indium of a white wid 
Solutions of the neutral salts of indium give with ferrocyanid of potas- 
sium a white dee it ferrideyanid no precipitate. 
The most striking pro of the new metal, and the one which led 
rner is colored blue when an indium- -compound is brought me a 
Berg. u.. Hiittenminnische Zeitung, xxiii, 142. 
12. Note on the formation of Aldehyds; by M, Carry Lea (Com- 
municated for this Journal.)—M. Carstanjeu describes as new a mode of 
erosion of aldehyds hy the oxydation of substituted ammonia 
ode of formation is, however, not new. In the ps of this 
Sag 5 have already indicated it. I have shown shat when triethyla- 
y chlorid of gold, the gold is reduced and aldebyd 
+ 
given 1 of 
+» Rep. de Ch. Pure, 1863, p. 616, quoted from Journal fiir praktische Chemie. 
~ 
