with the Spectroscope. 75 
ably well, greatest discrepancy one-tenth of a division. 
30°23 li 
faintest lines and in the limits of the bands, This star has not 
yet been observed with cylindrical lens. 32:4 broad line; 31°6 
to 31:2 shaded band best defined at 31:2; 80-1 line shaded to- 
wards the red; 29°5 faint band; 28°4 faint line; 28°3 fine line; 
27°75 faint line; 27°3 faint line; 27 line; 26°4 strong line; 25-7 
to 25-4 band. 
Aldebaran.—Mean of four observations, three with lens and 
one without—agreeing remarkably well. 82-2 to 82 ban] gen- 
erally limiting spectrum, still in places the red is seen beyond it. 
31°6 to 813 band; 30 line; 29°6 faint line; 27°7 faint line; 27:4 
faint line; 27 line; 26°6 rather strong line; 26°5 line not so 
bi as last; 25-6 faint band; 23-6 faint band seen but on one 
ion, 
_1 Leonis—-Mean of two observations very concordant. 80:2 
line; 27-7 line seen but on one occasion; 27°35 line; 26°8 line. 
Arcturus—This star has been observed but twice and without 
lens. I have affixed a mark of interrogation to those lines, the 
Places of which depend upon single or somewhat discordant o 
gape It promises a fine spectrum with the cylindrical | 
faint line: "Pa: oer a ak : ea ‘89 line: 
199 bang’ 28? faint line; 27°6 line; 27°32 line; 268 ne; 
m 
lines and many bands, the limits of which are very difficult to ~ 
locate, The adopted places are the means of four observations 
Ff Pare well in the main, all made with the cylindrical lens— 
ia, band limiting generally the spectrum. _31°7 to 818 shaded 
aoa Strongest at 31°83. 30°65 to 80°3 band strongest at 30°3. 
— faint line between which and preceding is included a yel- 
ow band or space. 29:3 faint band. 28° faint line. 27°3 
bans line, 27-1 to 267 band. 26 to 25°6 band. 24°6 to 241 
uh 22-9 to 29:5 band. ; : 
hei ne spectrum of this star is one of a group which 
ee resemblance to those already mentioned; its lines are 
dand black, they are well defined in margin, but unlike the 
bein, Tecorded in the foregoing notes, are totally without light, 
~~" 10 fact interruptions of the spectrum; no fine lines have 
