1 64 Mr, Goodricke's Obfervations of a new Variable Star, 



and iS of between the fourth and third. I have, however, 

 fome doubts whether the variation of this ftar does not entirely 

 ceafe or become lefs vifible in certain years. Thefe doubts arife 

 from fome obfervations of Cassini in Phil. Tranf. N° j^, 

 p. 2198. where I find that in obferving the new ftar, which 

 then appeared near the beak of the Swan, he compared it very 

 frequently for upwards of a month to /3 and y Lyrae, yet 

 without perceiving, or even fufpe6ling, that /3 was variable,, 

 though it was eafy for him to have perceived it, if th^ varia-^ 

 tioa had then been even lefs than it is now. 



lam, &c. 



JOHN GOODRICKE* 



