83- Mr. H£RSCHEL*3 Catalogue 



ill. fo call it, probably tinges them too deeply. Dlftance 



with 278, 12'^ 34'''; with 625, 12'' 2^"\ Pofition 



50"^ I 2'' n. preceding. 

 104. Fl. 83'"' Herculis priEcedens. 



Mar. 26, Double. About } degree preceding the 83 ; the fe- 

 1783. cond ftar towards the 79th Herculls. Very unequal. 



L. r. ; S. darker r. Diftance 14'' 20'''. Pofition 83^ 



48^ n. preceding. 

 1435*" y (Fl.'I*2^) Sagittae boreailor et pr^cedens. 

 April 7, 'Double, About 2^ preceding the double ftar V. 106. 

 1783. Pretty unequal. L. r. ; S. d. Diftance 14^^29^^^; 



very inaccurate, on account of obfcurity. Pofition 



50° 24' f, preceding. 

 ro6. Fl. 5 Serpentis. 



May 21, Double. Excefiively unequal. L. rw. ; S. db. Too 

 1783. obfcure for mealures. Of the thir<l clafs, far. Pofi- 



fition about 30° or 40° n. following, 

 107. Congerie Stellularum Sagittarii boreal ior. 

 Tune 6, Double. Abave i| degree n. of the 20th clufler of 

 1783. ftars of the Connoijfance des ^€mps^ in a line parallel 



to y Sagittarii and the clufter : the moft fouth of many. 

 'Cofifiderably unequal. Diftance with 278, 15'' lo^^^ 



As accurate as the prifmatic poW€r of the atmofphere, 



which lengthens the ftars-, will permit. Pofition K^d^' 



48 M. preceding ^, 



" '■•''.' ^ . 108. 



* What I call the prilmaric power of the atmofphere, of which little notice 

 has been taken by artronomers, is that part of its tefraftive quaHty whereby it 

 difperfes'the rays of light, and gives a lengfliened and coloured image of a hicid 

 point. It is very vifibie in lowitars; Fomalhanp, forinftance, affords a beau- 

 tiful prifmatic fpedtrum. That this power ought not to be overlooked in delicate 

 4 and 



