246 NEW STARS IN ANDROMEDA AND ORION. 
Since the application of spectrum analysis to the 
heavens, this nebula has become of especial interest, be- 
cause it belongs to the class of those which, though 
~ irresolvable by the largest telescopes yet constructed, 
still give a spectrum which indicates that they must be 
wholly or largely non-gaseous. 
The new star lay close by the nucleus, removed from 
it only 1.°4 in right ascension and 4" in declination. <A 
small, eleventh, magnitude star preceded it by about 
seven seconds. It fell in brightness from the date of its 
discovery. Prof. Hall observed it with the twenty- 
six-inch Washington telescope early in September. He 
called the star red, and estimed its magnitude 7.5. His 
observations were continued till the star had declined 
to the sixteenth magnitude, 7.e., to about the limit of 
visibility in the twenty-six-inch glass. The star dis- 
appeared in February. Prof. Hall thought it grew 
less ruddy as it grew fainter. He also calls attention to 
the fact that ancient astronomers, who knew the nebula 
only through naked eye observation, held that it was 
variable both in light and form. Perhaps similar out- 
bursts in earlier ages may account for this belief. 
The star was sharply defined, its color red or reddish 
orange. It contrasted finely in this regard with the 
ereenish white of the nebula. This light background 
of the nebula gave the star the appearance of a body 
observed during twilight. About September 17, the 
Potsdam observer noted a break in the falling off of 
light. Several additional measurements were taken to 
insure a correct estimate, and the result remained un- 
changed. Perhaps this indicated a slight renewal of the — 
outburst. 
The observations to be made upon a new star pertain 
to its color, its variability and its spectrum. I made a 
series of observations upon the Wova Andromede run- 
ning from September 28 to October 14, with a three-inch 
180 
