Miscellaneous Intelligence. 237 
cent in the case of barium, and 3 per cent in the case o 
he application of these observations to the solar spectrum, to 
elucidate which they were undertaken, is then given. 
t is well known that all the known lines of the metallic elements 
} * . ? ill 
rejected zine from Kirchoft’s list, and agreed with him in rejecting 
aluminium, It need scarcely be added that these lines are in 
metal. 
The help which these determinations afford to the study of the 
Various cyclical changes in the solar spectra is then referred to.— 
Phil. Mag., Feb., 1873. 
IV. Miscenuangous Screntiric INTELLIGENCE. 
1. Explorations west of the 100th meridian.—Under this title 
the U. S. Engine we 
z 
Ss 3 
S 4 
= 
FS 
rs 
8 
the 
divided, by certain parallels and meridians, into eighty-five 
’pproximately equal rectangles, each of which will be re ented 
t 
data accumulated last year with the results of previous explo 
Hons by the same peek in 1869 and 1871. The field-work of the 
