SPECTEA OP SOME OP THE BRIGHTER STARS. 
G85 
of the original negative. The method employed at Kensington, though no account of 
it had been published, had been in use for some time before Di’. Scheiner’s method 
was announced.'^’* 
III.—LISTS OP SPECTRA PHOTOGRAPHED. 
My object has not been so much to obtain photographs of the spectra of a large 
number of stars, as to study in detail the spectra of comparatively few. Hence many 
of the stars have been photographed several times with special exposures and foci for 
different regions of the spectrum. 
The following lists of 443 photographs of the spectra of 171 stars will show what 
material has been available for discussion. The stars are arranged in each table in 
the order of their right ascension. 
(1.) Stars photographed with Instrument A (6-inch prism of 7g°). 
Name of star. 
Number of 
pbotograpbs. 
Name of star. 
Number of 
photographs. 
X Andromedae. 
1 
X Canis Minoris. 
2 
/I Cassiope:a3. 
1 
X Hjdrae. 
1 
7 Pegasi. 
1 
X Leonis. 
4 
a Cassiopeiae. 
2 
7 Leonis. 
1 
7 Cassiopeiae. 
19 
0 Leonis. 
1 
/3 Andromedae. 
2 
ft Ursae Majoris. 
1 
S Cassiopeiae. 
1 
X Ursae Majoris. 
1 
/3 Arietis ....... 
1 
0 Leonis. 
3 
7 Andromedae. 
1 
7 Ui’sae Majoris. 
i 
a Arietis. 
2 
7 Virginis. 
1 
a Ceti. 
5 
G Ursae Majoris. 
I 
/3 Persei. 
1 
X Virginis. 
2 
a Persei. 
1 
f Ursae Majoris. 
1 
The Pleiades. 
1 
1 ] Ursae Majoris. 
I 
a Tauri. 
3 
X Bootis. 
16 
a Am'igae. 
16 
e Bootis ...... 
1 
/3 Orionis. 
5 
ft Ursae Minoris. 
1 
/3 Tauri. 
1 
X Coronae. 
1 
Nova Aurigae. 
6 
X Herculis. 
1 
7 Orionis. 
2 
X Opbiuchi. 
1 
S Orionis. 
3 
7 Draconis. 
2 
X Orionis. 
i 
X Ljrae. 
2 
< Orionis. 
1 
ft Lyrae. 
12 
6 Orionis. 
2 
7 Lyrae. 
2 
f Tauri. 
1 
X AquiJae. 
4 
f Orionis. 
1 
c Cygni. 
1 
K Orionis. 
1 
X 
7 Cygni. 
1 
0 Aurigae. 
1 
^ Cygni.. . 
2 
a Orionis ....... 
9 
e Cygni. 
1 
H Geminorum. 
6 
X Cepbei. 
1 
7 Geminorum. 
2 
6 Pegasi. 
2 
a Canis Majoris. 
4 
// Pegasi. 
1 
/3 Canis Minoris. 
1 
ft Pegasi. 
5 
ft Canis Majoris. 
1 
a Pegasi. 
1 
* ‘Nature,’ vol. 42, p. 303, 1890. 
