AMERICAN 
JOURNAL OF SCIENCE AND ARTS. 
[THIRD SERIES] 
eee 
Ant. XXI.—On the Testimon 
: ‘mony of the Spectroscope to the truth of 
the Nebular Hypothesis; by Professor DANIEL Kirkwoop, of 
Bloomington, Indiana. 
ere and that of Andromeda have been the last stronghold 
a os nebular theory ; that is, the idea, first thrown out by the 
et Herschel, of masses of nebulous matter in process of con- 
pe. The. Ww 
tury would have been bold enough to fe 
: physical constitution of the heavenly 
ination of the elements of which they are composed, d 
€ med a scientific enthusiast. This, how- 
‘ver, and more than n actually accomplished. In 
AM. Jour Sct.—Turep Serres, Vor. II, No. 9.—SePr., 1871. 
il 
