RELATION OF SEPARATIONS TO THE NORMAL INTERVAL. 



49 



OCTUPLETS. 



Iron: X 3743.308 X 3788.046 X 4859.928 



Titanium : 



20 

 a n,p 

 o n,p 



X4281.S30 

 30 n 2 

 30/2 n,p I 

 o n,p o 



2a 2 

 a n,p I 

 o n,p o 



(30 n 2)? 

 30/2 n,p I 

 o ,/> o 



^5497-735 

 Sa n 2 

 3a/2 n,p I 

 o ,/> o 



X 4308.081 

 2a 8 



30/2 n 6 

 a n 4 



3a/4 P 3 



X 4527.490 



23 ?I 2 

 a H,/) I 

 O H,/! O 



X 4544.864 



2a n 2 



a n,p I 



O K,/! o 



X 4590.126 

 33/2 12 



o n 8 

 70/8 p 7 



a/2 4 



X 3748.408 



33/2 K 3 



a n 2 

 a/2 n,p?i 

 o p o 



X 3840.580 



3"/^ " 3 

 a 2 

 a/2 ti,p I 

 o p o 



^ 4233-772 



3" 3 



2a 2 



o ,/> I 



o /> o 



Nonets. 



X 5405 . 989 



(30/2 n 3)? 

 a n 2 

 a/2 n,p I 

 o p o 



Titanium: 



Titanium: 



Ten-Component Lines. 

 X 4417.884 X 4471.017 



; ? ? 



a n 8 

 31/4 /> 6 

 3a/8 n 3 



a/4 p 2 



93/4 6 



30 A/" 4 

 90/8 ),/>? 3 

 30/8 I 



X 4471 .408 



2ia/8 n 7 



150/8 K 5 



9a/8 3 



30/4 p 2 



o p o 



X 5025.027 

 33/2 24(5) 

 53/4 p 20(4) 



3 16(3) 



53/8 P 10(2) 

 53/16 M S(l) 



X 4489.262 



2ia/8 n 7 



153/8 5 



93/8 n 3 



33/4 ^ 2 



o /> o 



X 4629.521 



53/2 n 5 



33/2 3 



3 ^2 



0/2 I 



o p o 



The numbers in parentheses for X 5025.027 give a simpler relation between the intervals than the exact 

 ratio of the multiples of parts of a. Another probable ten-component line isX3982.630, for which the 

 measurements are poor. Its n-components are in the ratio 5:3:1. 



Iron: X 3888.671 



3<i/2 n 3 



a n,p 2 



a/ 2 ti,p? I 



o o 



Eleven-Component Lines. 

 X4871.S12 

 (33/2 n 3)? 

 a n,p 2 

 a/2 n?,p I 

 o p o 



Titanium : X 3930 .022 



93/4 n,p 3 



33/2 n,p? 2 



33/4 H I 



O H O 



X 487 1.5 1 2 has its M-components blended, but the structure indicates the above arrangement. 

 The titanium line X 392 1.563 has probably the same structure as X 3930.02 2. The -components 

 have the ratio 3:2:1:0, but the measurements are not good enough to be sure of the relation to a. 



Twelve-Component Lines. 



Iron: 



X3722.729 



2a 4 



33/2 3 



a n,p 2 



a/2 n,p?i 



X 3872.639 

 23 n 4 

 33/2 n 3 

 a n,p 2 



0/2 n,p}i 



X 5447.130 

 23 n 4 



33/2 K 3 



a n,p 2 



3/2 n,p I 



Titanium: 



X 4289.237 



23 n 4 



33/2 n 3 



a n,p 2 



a/2 n,p I 



2. Discussion of Relations to Normal Interval. 



It is shown in Table 4 that for iron two-thirds and for titanium over one-half of the clear triplets 

 are separated by the intervals 2a, 5^/2 and 3a. For both elements, however, a very large majority have 

 separations of this order of magnitude, since almost all of the hues classified as "odd" give intervals 

 within this range, the numbers corresponding to 70/4 and ga/4 of weights i and 2 being given for titanium 

 in the "Remarks" column. A more precise classification, in which smaller fractional parts of a can be 

 used, must await an investigation with greater field-strength, which will also decide the structure of 

 most of the doubtful triplets, the separation of which is not included in any of these summaries. 



Table 5 shows how generally the separations of those lines showing two n- and two /(-components 

 can be expressed in terms of the interval a, also the wide variety of separations wliich prevails. The ratios 

 of 2 : 1 and 3 : i predominate for both elements. As has been previously noted, the /^-components almost 

 always show the narrower separation. 

 4 



