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XIII. 
. REVISED CATALOGUE OE VAEIABLE STARS, WITH 
NOTES AND OBSERVATIONS. By J. E. GORE, M.R.I.A., 
F.R.A.S., Honorary Associate of the Liverpool Astronomical 
Society. 
[Read June 13, 1887.] 
ECE following is a revised Catalogue of all Stars now certainly 
aown to be variable in light. All recent discoveries have been 
Lcluded, and a few variables added, which were inadvertently 
initted in the first Catalogue. To avoid disturbing the numbering 
' the former Catalogue, lettered numbers are given to the new 
Iditions. A number of stars are added in a Provisional List which 
ive been announced as variable, but of which the variability does 
)t yet appear to be placed beyond doubt. 
To avoid confusion in the future, distinctive letters (according to 
rgelander's nomenclature) have not — except in a few cases — been 
i.ded to the new variables in the present Catalogue. 
The positions of the variables have been brought up to 1890*0, 
.d the latest observed dates of maxima and minima have been given 
tien these could be obtained. In some cases, however, no recent 
servations were available, and for dates of maxima and minima the 
nner Catalogue should be referred to. 
Columns have been added showing colour and spectrum as far as 
itherto observed. The colours have been derived from various 
irces, and the spectra have chiefly been observed by Duner and 
>gel. A few have been observed by Espin. The notation used for 
9 spectra is that employed by Duner in his valuable Paper, Sur les 
E. I. A. PEOC, SEE. III., VOL. I. H 
