ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 211 

 Mercury (Aec Spectrum) — continued. 



The lines marked * form a series of triplets for which in the formula 



10*7^^ =a-b}i---en-*, « = 40159-60 for the first Une, 44792-87 for the second, and 



46560-78 for the third, &= 127484, c = 1252695. For the triplets marked f 

 a = 40217-98, or 44851-01, or 46618-44, & = 126361, c = 613268. 



X Ames (Rowland's scale) {Phil. Mag., July 1890), 4451-09, 4358-50, 4347-71, 

 4077-98, 4046-67, 3663-41, 3663-03, 3654-96, 3650-28, 2653-80, 2652-15. § See Iron. 



Bromine (Absobption). 



Hasselberg, ' Kongl. Svenska Yetenskaps-Akademiens Handlingar,' Bandet 24, 



No. 3, 1891. 



* Double. t Triple. 



