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33 



ASTRONOMICAL PAPERS. 



happened to be very near the truth. For at 2^\ 10' 

 mean time, the ift external contaSi was at Narritotty lat. 4o'> 



9'. 56^' N, and long. j\ i'. 31'' weft. Other calculations 

 made it generally from 6' to 8' later for the latitude and 

 longitude. 



Though this calulation was not given, to be entirely de- 

 pended on, yet it was fufficient to make us keep what, in 

 the fea phrale, would be called digood look^-Qut ; and there- 

 fore, at one o^clock-^ we took off the Micrometer, which 

 had been fitted to the Refledor with a power of 95, and 

 adjufted it to diftind vifion, with the * fame power to ob- 

 ferve the ContaSJs. And during the hour that was to in- 

 tervene from 07te to t^vo-y we refolved to keep an alternate 

 watch through the RefleSIor^ on that half of the StitCs 



limb, where Venus was certainly expefted to touch; while 

 the others, not thus employed, were fixing what more re- 

 mained to be done, as follows, viz.- 



Flrft,. That each of us might the better exercife our own 



judgment, without being influenced, or thrown into any 

 agitation by the others, it was agreed to tranfad every 



thing by fignals, and that one fhould not know what ano- 



The Situation of the Telcfcopes, the two 

 Refradors being at fome diftance it;zVZ?(9«^ the Obfervatory, 

 and the Refledor it^zV^/Vz, favoured this defien. 



ther was doing. 



Secondly, Two perfons, Mr. Sclkrsy one ofourCom- 

 mitee, and Mr. Archibald NTClean^ both well accuftomed 

 to matters of this kind, were placed at one window of the 

 Obfervatory, to count the clock and take the fignal from 

 Mr. Lukens. Two of Mr. Rittenhotije^ family, wliom 

 he hath often employed to count the clock for him in his 

 obfervations were placed at another window to take his 



fignah 



• As the tvjo RiffaBhig TeUpopes^w^cA by my affociates, \oa\ nito tln-ir -field l)ut a fmall part 

 of the Sun*slinib, and were ditftciilt tomanaj^e on account of ihcir length and the Sun's great 

 altitude, it was thought heft that I ihoidd not ufe the grcateft power of the Rejlff^hr ; that, hav- 



Lppcn near rnat part, \vc were to tranuct every 

 thing- hy fignals jnvcn to the counters at the clock, without the leaft notice to each other. It 

 was alfo thought bell that there Ihould he fome difference in our magnifying powers; and T am 

 ■well picafed that 1 did not nfe a larger with the Relledor, as the viiion, with the power t ufedj 

 Was ex^uifucly dillind and accurate. 



N 



