336 Structure of the Line-Spectra of the Chemical Elements. 



Group of 

 elements. 





Li. 



Na; 



1233b 



56-4 



Cu. 



Ag. 



Au. 



-{ 



V 



\ 2 



{ 6102 

 (0-8 ealc) 



8199 



14-6 



8187 



5217-1 



242-2 



5152-6 



f 5470-0 

 1 5460-0 



917-2 



5208-7 



f 5862-0 



1 5836-0 



3819-5 



4792-0 







Be. 



Mg. 



Ca. 



Zn. 



ca. 



Hg. 



( 

 II. i 



V 



K 



* 2 



"2 



x 3 



3130-3 



3-1 



3130-0 



3837-9 



41-4 



3832-1 



20 6 



3829-2 



f 4455-2 

 1 4454-0 



103-2 



f 4435-3 

 1 4434-5 



51-4 



4425-0 



3344-4 



388-4 



3301-7 



187-4 



3281-7 



[3611-8 



1 3609-4 



1160-2 



f 3466-7 



1 3465-2 



538-4 



3402-7 



f 3662-9 

 1 3654-4 



4637-3 



J 3130-4 



1 3124-5 



1766-0 



2966-4 







B. 



Al. 







In. 



Tl. 



- 1. 



V 



2497-0 



10-5 



2496-2 



3091-9 



109-6 



3081-2 







f 3257-8 

 1 3255-5 



2212-4 



30387 



/ 3528-3 

 1 3517-8 



7784-2 



2767 -1 



The lines of Li and K are, in all probability, double like 

 the others, but their components have not jet been separated. 



The periodical variation of the constants allows of calcula- 

 ting by interpolation the spectrum of an element when the 

 spectra of the adjacent elements in the periodical system are 

 known. To show how far such an interpolation can go, I will 

 cite the wave-lengths of the first terms of the diffuse and 

 sharp series of Gra. They are calculated without making use 

 in any way of the (two) measured lines of this element, or 

 even having them present in the calculation. 



The interpolated constants are (cfr. section 3) : — 



First series 47547*1 



Second series 483 



o- 

 47-11 



78-7 J 



831-6 



Diffuse group 0' 



Sharp group 0-1568 



and the thereby calculated wave-lengths : — 



m 



Diffuse group. 



Sharp group. 



1. 



2. 



3. 



2. ■ 



3. 



4. 



First series ... 

 Second series... 



6663-4 

 6313-5 



2949-2 

 2878-6 



2494-3 

 24436 



4173-7 

 4033-7 



2737-0 

 2676-1 



2427-4 

 2379-3 



