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VI. Catalogue of Double Stars, 

 V/illiam Herfchel, Efq, F. R. S. 



Read December 9, 1784. 



INTRODUCTORY REMARKS, 



t I "^HE great life of Double Stars having been already pointed 

 jL out in a former paper, on the Parallax of the Fixed Stars^ 

 and in a latter one, on tlie Motion of the Solar Syftem, I have 

 now drawn up a fecond colle6lion of 434 more, which I have 

 found out fince the firfl was delivered. 



The happy opportunity of giving all my time to the purfuit 

 of aftronomy, which it has pleafed the Royal Patron of this 

 Society to furniih me with, has put it in my power to make 

 the prefent collection much more perfect than the former ; 

 almoft every double flat in it having the diftance and pofition 

 of its two ftars meafured by proper micrometers ; and the 

 obfervations have been much oftener repeated. 



The method of claffing them is in every refpeCl the fame as 

 that which has been ufed in the firft colle6lion ; for which rea- 

 fon I refer to the introdudlory remarks that have been given 

 with that colle6lion * for an explanation of feveral particulars 

 neceflary to be previoufly known. The numbers of the flars 

 •are here alfo continued, fo that the firfl clafs ending there at 



* See rhilofophical Tfanfa6tions, vol. LXXII, p. II2. 



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