ISO DETERMINJTJON of the LATITUDE 



i;^° 15' 20", and at the end ^3° 9 39"; hence arch firfl is 

 53° 32' 20", and arch fecond 52° 52' 39". 



With thefe arches, and the fum of the femidiameters of the 

 fun and moon at the beginning and end of the ecHpfe, arches 

 third and fourth will be found equal to 19' i3''''.2 and 19' 32*.6 

 refpeftively. Now, the fum of arch third, and the parallax in 

 longitude at the beginning is 441''''. i, and the difference be- 

 tween arch fourth, and the parallax in longitude at the end, is 

 ij^.o. Now, with this fum and difference, the moon's true re- 

 lative motion in longitude, and the obferved interval, the difi'e- 

 rence between the beginning of the eclipfe and the conjundlion 

 is i^^ 16' 36*. I, and between the end and the conjvmdlion 26*. r. 

 Hence the apparent time of conjundlion, inferred from the be- 

 ginning, is 20'' 49' 55".!, and from the end it is alfo 20'^ 49'. 

 55*. I, But the apparent time of conjundlion at Greenwich is 

 2o'^ 58' 27''''.9 ; hence the longitude of Aberdeen in time is 

 8' 3 2". 8 weft. 



Computation of the Apparent Time of Conjuneflion, on 

 the Sphei'oidal Hypothefis, at Greenwich. 



h. ' " 

 Appt. time of beginning, 19 24 46^ App'. time of ending, 



Sun's right afcenfion, 4 51 3ot 



Right afcen. meridian, 

 Moon's true long. 

 Eft. par. in lon^. 



%, 



ftimated app. long, 

 loon's hor. par. 

 Reduftion, 



Reduced hor, par. 60 33.4 



