Chemistry. 415 
misunderstood proof that was not sent to us for revision, and lie near 
as their spectrum as far as the importan , the character- 
istic and brilliant, lines were concerned. They are therefore scarcely more 
in fault in having “neg! ake an accurate comparison” than 
his Qualitative Analyse, and we have never yet had the good fortune to 
see the lines of this element correctly ma pped on any colored print. 
unsen notices at length the inaccuracies of the diagram of J. & A., 
which, as the latter stated distinctly, was intended to give approxima tively 
the position of the lines on Kirchhoff and Bunsen’s seale, and which from 
the construction of the spectroscope they employed ld not be exact. 
he remar . and A. that 
in small instruments is a coincident with @ lithium, if it be not 
credited to cesium by the authorities. 
Johnson and Allen rightly sie that “the yellow line VII, is hardly 
less character of the spectrum of pure cesium than the two blue 
. oi 
e 
original spectrum plate of K. & B. Chemists will be glad that Bunsen 
as now given, in connection with the paper we refer to, a diagram of the 
Spectra of all the alkalies and alkaline earths, as 3 well as of on 
TER.—The authors have found a new seta in two o Freiberg ores, which 
me galena, 
together with silica, pita oe , copper, and a small satan of tin 
mium. The ores were first roasted to get rid of the greater 
of the arsenic and salakar then mixed with eh. ies sid evaporated 
to dryness and distilled. The impure ¢ chlorid of zinc obtained was 
drated ox sees and — in the iectniie state. On submitting these, 
moistened with chlorhydric acid, to the spectroscope, the blue line was 
seen so brilliant, sharp, and persistent, that they did not hesitate to con- 
clude that it belonged to a ancag unrecognized metal, to which they 
accordingly gave the name Jndiu 
