Physics and Chemistry. “273 
atmosphere contains titanium. The following elements had, so far 
as the writer knows, not before been examined with the spectro- 
scope; glucinum, zirconium, erbium, yttrium, thorium, uranium, 
Upsaliensis. Series tertia, vol. vi, fase. 11, 1868. 
Ww. G. 
. On spectral analysis.—In another memoir on spectral analy- 
given what amounts to a complete history of, and treatise on, 
Th a 3 
. a norma 4 
the Academy of Sciences, on behalf of the author, A. J. Angstrom, 
@ new atlas of the solar spectrum. is atlas contains six de- 
entered simply according to their wave lengths, a method which 
‘stré That the new charts will prove 
ub re- 
ith it, was presented by the writer of 
ucted in accordance with it, r 
these notices to the National Academy of Sciences, Aug. uth, 1866. 
This chart contained 87 lines.—( Zhis Journal, vol. xliii, Jan 
R i oe 94 
Ixvii, 946. ie 
4. On the red protuberances ee the surface of the agrees 
z 
