220 Dr. Herschel's Method of observing the 
78 Is less than 66 and 67. “ It is much too small for 
3 . 4m.” In Flamsteed's observations I find it marked 6m. 
81 Is larger than 80, contrary to the catalogue. But in the 
observations there is no magnitude to either of the stars. 
“ Sept. 27, 1788 ; 20-feet reflector, 81 ( 2 d 7 r) 3 . 4m, Fl. 5m." 
It is either undervalued in the catalogue, or grown brighter 
since Flamsteed's time. 
P. The changeable star in the neck of the swan. Its pe- 
riod is 396 days 21 hours. See Phil. Trans. Vol. LXXVI. 
page 200. Its present lustre is 17 -- P. 
Atlas. 
14 requires -f- i° in PD. 
5 should be out. 
Notes to Delphinus. 
“Aug. 14, 1781. Order of magnitude (3 u d" 
7 £ 
9. In the catalogue it is marked 3m; in Flamsteed's ob- 
servations it is 6m. My expression 6,9.12 agrees best with 
the catalogue. 
13 “ Aug. 7, 1785, 6111." In Flamsteed's observations 
it is also marked 6m. 
Atlas. 
12 Should be placed about 52' more south on plate 23. It 
is right on plate 25. 
Notes to Equuleus. 
“ Aug. 13, 1781 . Order of magnitude a J P'' 
6. In the catalogue we have 4m ; in the observations 
Flamsteed has once marked it 6m, and once 8m. If there 
