| AMERICAN 
JOURNAL OF SCIENCE AND ARTS. 
[THIRD SERIES] 
e 
+ 
| Arr. XI —Discussion of the Working Hypothesis that the so-called 
: megs are Compound Bodies ;* by J. Norman LocKYEr, 
| ERS. 
__ Iv is known to many Fellows of the Society that I have for 
the last 
four years been engaged upon the preparation of a ma 
of the solar spectrum on a large scale, the work including a 
comparison of the Fraunhofer lines with those visible in the 
Spectrum of the vapor of each of the metallic elements in the 
-€lectric are. 
* Paper read at the Royal Society, December 12, 1878. 
_ AM. Jour. $c1.—Turep Series, Vou. XVIL—No, 98, Fes., 1879, 
