of Double Stars, 4^ 



I^ befl 1 diameter of S. ; with 1504, I diameter, we!l- 

 defuied, and the difference of colours fllll vifible; with 

 2176, not quite a diameter of S, pretty well defined, 

 but exceedingly tremulous; w^ith 2589, lefs than i 

 diameter; with 3168, ftill pretty diflincl, and about 

 f diameter of S ; witii 4294,, more than a diamf.ter of 

 S, but attended w'lth the utmoft difficulty of managing 

 the motions ; with 5489, the interval ftill fomewhat 

 larger, and if the obje6l could be kept in the center of the 

 field, the eye might adapt itfelf to the focus, and 

 get the better of the violent aberration y but the edges 

 of the glafs being of a different focus, the eye is con- 

 ftantly difappointed in its endeavours to define the,ob-t 

 je6: ; with 6652, I had but a fingle glimpfe of the ftar 

 quite disfigured ; however, I afcribe it chiefly to the 

 foulnefs of the glafs, wdiich, on account of its fmall- 

 nefs, is extremely difficult to be cleaned ; with a lo-feet 

 reflector, 9 inches aperture, power 626, above f dia- 

 meter of S. very difl:in£t ; with a 20-feet refledtor, 

 power 350, too bright an objedt to be quite diftind, 

 though I fee it very well. Polition 5" 24' n. following. 

 A third ilar preceding. Dift. i'5i'^23''", pretty accurate 

 for fo great a diftance. Pofition 31° o^ n. preceding. A 

 fourth flar preceding the third, and fomewhat fmnller. 



29. Parvulajuxta Fl. 44^"^ :Leonis, 



Feb. 17. Double. About 4' following the 44th Leoaiis, which 

 1782. being double in the finder; this is the leafl: of the two. 

 Extremely unequal. L. w. S. d. With 227, 14- dia- 

 meter of L. ; with 460, 2 diameters of L. Polition 

 26° 32' n. following. 

 Vol. LXXV. H 30. Secunda 



