476 PHILOSOPHICAL TRANSACTIONS. [ANNO 1799. 



i and 6 Were never observed by Flam steed, but are in La Caille's Catalogue of 

 northern stars. 



n M. de la Lande says the star is not to be found. See Mr. Bode's Ast. Jahr- 

 Buch for 1795, page 198. I observed this star in a sweep of the heavens, June 2, 

 1788. Its brightness was estimated Sept. 11, 1795 ; Sept. 24, 1796; Sept. 30, 

 1796 ; and Dec. 28, 1798 ; so that, if M. de la Lande is sure no cloud intervened 

 when he looked for it, we may suspect it to be a changeable star. 



a. The British catalogue requires + 30' in ra. 



(v}/ 2 ) The expression " 35 — 40 + 41" in my estimation of brightness, means 

 that, with the naked eye, the star is a very little brighter than 40 and 41 together, 

 taken as one star. For they are so near each other, that the eye alone cannot dis- 

 tinguish them from a single star. The British catalogue gives them 3' farther 

 asunder than they ought to be according to Flamsteed's observation, p. 463. See 

 also Mr. Bode's Ast. Jahr-Buch for 1785, p. 173. 



b The estimation M 40 — 4l" was made with a 7-feet reflector, power 460. 



u Does not exist. Flamsteed has no observation of it. My double star 11, 31, 

 called 56 Draconis, is a star situated between 59 and 50, about 1-f degree from 59 

 towards 50.* 



<r (62) Does not exist. Flamsteed has no observation of it ; but, if an error of 

 2 hours be supposed in the calculation of one of the observations of 3 1 Draconis, it 

 will account for the insertion of this star. 



f (72) Does not exist. There is an observation, p. 173, which produced it; 

 but, if we admit an error of 3 m in time in that observation, it will then belong 

 to 71. 



Notes to Lynx. — 7. Does not exist in the place pointed out by the British cata- 

 logue ; but, in Flamsteed's observations, p. 286, its time is marked : :, and there 

 is probably some considerable error. 



20, 21, 22. The place of these stars in the heavens does not seem to agree with 

 their situation in the Atlas. 



30 Is 58 Camelopardali. 



35. Flamsteed has no observation of this star; but, as it is marked 7m in the 

 British catalogue, and has a line allotted to it, my Atlas and stars have been num- 

 bered so as to take it in ; and the numbers I have used with double stars and other 



* When I say 1 \ degree from 59 towards 50, it is to be understood that I express myself in degrees 

 of a great circle. I have always used the same method of description in my catalogues of double stars ; 

 and, as these objects were pointed out for being viewed with telescopes of great magnifying power, which 

 are generally not fixed, and therefore can give no right ascension, I am rather surprized to find that, in 

 a catalogue published not many years ago, the author has taken my degrees of a great circle for degrees 

 of right ascension. For instance, the double star i v, 82, where, in pointing out its place, I say, " above 

 I degree following the 16 Cephei, in a line parallel to /3 and * Cassiopeae," is placed in the zone from 15 

 to 19° of that author's catalogue, only 2' 47".5 of time following 16' Cephei, when it ought to have been 

 at least 10' or 11' following. I take this opportunity to mention that, in general, the same author's ac- 

 count of my double stars is extremely erroneous. — Orig. 



