C 2803 



XXXII. Catalogue of North Polar Distances of Eighty-four 

 principal fixed Stars, deduced from Observations made with the 

 Mural Circle at the Royal ObseiDatory . By John Pond, Esq. 

 Astronomer Royal, F. R, S, 



Read July 8, 1813. 



The Catalogue, which I have the honour to transmit to the 

 Society, is deduced from the whole of the observations made 

 with the mural circle, from its first erection in June, 1 81s, to the 

 present time. I am still employed in endeavouring to give it 

 a greater degree of precision, and when it is entirely finished, I 

 propose to submit some of the observations themselves to the 

 Society, and explain the method by which the results have 

 been obtained. 



I have already mentioned, that I use neither level nor plumb- 

 line ; but determine the position of the instrument by means 

 of a standard catalogue of stars derived from the instrument 

 itself, in such a manner, that every series of observation of 

 these stars, serves the double purpose of ascertaining the posi- 

 sition of the instrument, and at the same time improving the 

 Catalogue. 



As the present Catalogue has been formed by frequently 

 changing the position of the telescope on the circle, for the 

 purpose of correcting every possible error of division, my 

 observations have not been calculated to decide the question 

 of parallax which has been suspected to exist in « Lyrae, oc 



