( 441 ) 



SECOND ASSOCIATED SERIES. 



Thallium. 

 The forrnula for the 1^* associated series is 



109675 

 71 = 41466,4 — 



m -f 1.90141 — 

 109675 



for the satellites : 



n = 41466,4 — - 



(yn 4- 1,88956 



and for the second associated series : 

 71 = 41466,4 



0,00366\ 

 m J 



0.00085 



)■ 



109675 



( 



m + 1,26516 



0,07108 



The limit has been"^calculated from three lines of the 1^^ associated 

 series ; only two more lines were required of the satellites and of the 2"*^ 

 associated series. So in this spectrum all the constantshavebeen calculated 

 from 7 lines and 31 lines are verj well represented by the formula. 



FIRST ASSOCIATED SERIES. 



