go PHILOSOPHICAL TRANSACTIONS. [aNNO 1786. 



33 Serpentis. — In 1784 I perceived that this star was missing; nor was it visi- 

 ble in 1785 with a night glass. 



ji star marked by Bayer near i Ursce Minoris. — Cassini could not see this star. 

 In 1782 I took, with a night-glass, a plan of all the stars near its place, and near 

 the f, none of which were brighter than the 7 • 8th magnitude. I have since re- 

 examined the plan, but found no alteration. 



The ^ or Ftol. and UL Beigh's lAth Ophiuchi or Flamsteed's 36th. — I have no 

 doubt but that this is the star which is said to have disappeared before 1695. It 

 is also evident, by what Hevelius says in his catalogue on the 6 and b, that the ^ 

 was not seen by him. In 1784 and 1785 I found it of the 4 . 5th magnitude, 

 much brighter than 39, also rather brighter than 51 and 58, and less than 44. 

 On the 30th of June, 1783, I have marked it in my journal equal to 39, and less 

 than 51 and 58 ; but as the observation was not repeated, I am far from being 

 certain it has undergone any change, particularly as this star has a southern de 

 clination of 2d°, and therefore great attention must be given to the state of the 

 atmosphere. 



Ptol. 13th and 16th Ophiuchi, 4th magnitude. — If there is no error in the 

 catalogue, these two stars have disappeared ; but I am confident that Ptolemy's 

 13th is Flamsteed's 40th, and that Ptolemy's 1 8th ought to be marked with a 

 north latitude instead of south, which would make it agree nearly with Flam- 

 steed's 58th. 



<r Sagittarii, — Mr. Herschel, with great reason, has placed this star among 

 those which probably have changed their magnitudes. I had long since remarked 

 tJie singular disagreement in all the catalogues, which induced me to observe it 

 frequently, particularly in 1783, 1784, and 1785, when it appeared of the 2 . 3d 

 magnitude, and brighter than ir Sagittarii. 



9 Serpentis. — Montanari says he saw this star of the 5th magnitude, and that 

 the next year it grew larger. I examined it frequently in 1/83, 1784, and 1785, 

 and found it always less than S Aquilse, equal to |3 Aquilae, and p Ophiuchi ; 

 4th magnitude. 



Tycho's 27 ih Capricorni. — This star was not visible in Hevelius's time; nor 

 could I see it 1778, 1782, 1784, with the transit-instrument. 



Tycho's lid Andromedip and AndromedtF. — Cassini remarked, that the star 

 placed by Tycho at the end of the chain of Andromeda as of the 4th magnitude, 

 was become so small that it could scarcely be seen. This is Tycho's N° 22, the 

 longitude and latitude of which places it near the two -n- Cygni, and where no star 

 was visible in 1784 and 1785. As possibly, by Tycho's description, Cassini took 

 the 22d for the Andromedae, I have also examined this star, and in 1783, 1784, 

 and 1785, found its relative brightness thus: less than a Cephei; equal to ^ 

 Cassiopeae, though, if any difference, rather brighter than a, )c, or i Andromedae. 

 Tycho's igth Aquarii. — ^This is the star that Hevelius says was missing, and 



