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XVIII. ^ Defcription of a new Syjlem of Wires in the "Focus of a 

 Tekfcnpe, for objerving the comparative Right Jfcenfions and 

 Declinations of ccekfial Objedls ; together with a Method oj In^ 

 vejil gating the fame when obferved by the Rhombus^ though it 

 happen 72ot to be truly in an equatorial Pofition, By the Rev* 

 Francis Wollaftoo, LL,B. F.R.S. 



Read April 7, 1785. 



IN confequence of a paper communicated the laft year ta 

 this Society, and honoured with a place in our Tranfa£lions, 

 it may be expedled of me, that I fliould now deliver in an ac- 

 count of what farther obfervations I have made on that con- 

 flellation of which I then gave a rough map. This I readily 

 would do, if they were in any degree worthy of the Society's 

 notice. But as yet they are far from perfedt : how much better 

 they may fucceed hereafter, time muft fhew. 



Yet has this year perhaps not quite been loft ; the difficulties 

 which difappointed my hopes, having led to what appears to me 

 an improvement in the Inflrument with which to purfue fuch 

 obfervations. 



My defign, as was hinted in that Paper, was to afcertain, as 

 well as I was able, the right afcenfions and declinations of the 

 ftars I had laid down ; by obferving their meridian pajfages and 

 meridian altitudes^ where that could be done with fuch fmall 

 inflruments as mine ; as alfo by their comparative pajfages 

 through the field of an equatorial telefcope furnifhed with a 

 7 iyflem 



