Chemistry and Physics. 59 
SCIENTIFIC INTELLIGENCE. 
I. CHEMISTRY AND PHYSICS. 
eter. Pure iodine is then introduced into the tube, which 
after expulsion of the air is sealed. If the iodine be then volatil- 
wed and the wire ignited by a battery, the spiral appears sur- 
rounded by a flame of a very rich red color, which yields the 
well-known interrupted spectrum.— Comptes Rendus, Tome Ixxiv, 
a ei Ww. G. 
2. On the absorption spectra of the vapors of selenium and of 
certain other Bihiek. — Getter bee fond ee the vapors of 
Seenium and a number of other colored vapors give distinctly 
marked absorption bands. When selenium is heated in a porce- 
aed by the author. Tellurium when volatilized in an atmos- 
Phere of dry carbonic acid gas emits at a very high temperature a 
golden yellow vapor, which yields a very brilliant absorption 
ru 
Yapors, which act verv strongly onlight. The absorption spectrum 
8 particularly Seislond gt orange and the green, Tellurous 
