OF ARTS AND SCIENCES. 63 



hereafter) was in the Histoire Celeste Francaise. Mr. Walker found 

 that Lalande had twice included the Neptunian region in his sweeps, 

 viz. May Sth and 10th, 1795. Accordingly, he computed the locus 

 of Neptune on the latter night for all values of e, from 0.006474 to 

 0.06, and for the two cases of ± u at the present time. This locus, 

 referred to the mean longitude and obliquity for 1800, so as to com- 

 pare with Hussey's Hour XIV. in the Catalogue of the Berlin Acad- 

 emy, is as follows : — 



Locus OF Neptune, May 10th, 1795, for various Eccentkicities. 



Neptune's R. A. 1300. Dec. 1800. 



" Mr. Walker then selected from the Histoire Celeste all the stars 

 within 15' of the locus of Neptune in the above table. 



" The only stars in this list, not found in Bessel's Zones, are Nos. 1, 

 2, and 8. Of these No. 1 is too small. No. 2 is too far south (17') 

 of Neptune's computed path. No. 8 is within 2' of the computed 



