48 



INFLUENCE OF A MAGNETIC FIELD UPON THE SPARK SPECTRA OF IRON AND TITANIUM. 



49 of titanium were thus treated, and 80 per cent of the former and 75 per cent of the latter were found 

 to show separations related to a in this way. Table 5 gives the number of lines corresponding to each 

 ratio of separation for n- and /"-components when these could be expressed in terms of a or a/2. 



Fourteen lines of iron and 13 of titanium gave separations not to be expressed in terms of a/2, but most 

 of these showed a simple ratio between the n and p separations. For iron, 2 hnes showed a ratio of 1:1, 

 6 lines of 2:1, 2 hnes of 3 :i, 2 lines of 4:1. The odd hnes of titanium had among them 5 of ratio 2:1, 

 and I of ratio 4:1. 



The more complex hnes, so far as they were resolved by the field employed, have been arranged in 

 the following summary. In each case, below the wave-length, the first column gives the interval in 

 terms of a from either the red or the violet component to the center of separation. (The triplets and 

 quadruplets in Tables 4 and 5 have their separations given as the total distance from the red to the violet 

 component.) The second column shows whether it is the n- or /^-component which has this separation. 

 If both letters are present for a given interval, there is a superposition of components having the two 

 polarizations. The last column gives the ratio of the successive intervals. 



Iron: 



>>37i8.SS4 



50/4 n 2 



Sa/8 p I 



Quintuplets. 



f^?' 3733 469 3865.674"] 



3760.679 5455.834 have the arrangement 

 (_ 3814.671 5603. i86j 



f 30/2 n,p 

 \ o 



Titanium : 



Iron: X 3774.971 



50/2 n 10 



5^/4 5 



a p 4 



Titanium: X 3982. 142 



33/2 3 

 a p 2 

 a/2 n I 



X 4302.085 



2a 8 



30/4 p 3 



a/2 n 2 



X 4291 . 114 



30/2 n,p - 

 o n 



X 4109.953 



33/2 K 



3^/4 >',P 



X 4422.741 



30/2 n 3 

 a p 2 

 a/2 n I 



X 4464.617 

 70/4 n 2 



^a/% p I 



o no 



Sextuplets. 

 X 4447.892 

 2a 4 

 33/2 n 3 

 a p 2 



X 4710.368 



40/3 n 8 



a/2 n 3 



o p o 



X 5720.666 



30/2 n,p - 



X 4872.332 

 30 n 2 

 30/2 n,p I 



X 6213.644 



30 K 6 



3/2 " 3 



a p 2 



X4321.119 

 2ia/8 n 3 

 70/8 n,p I 



X 4640. 119 



53/2 n 5 



30/2 n 3 



a pi 



X 4722.797 



30/2 12 



90/8 p 9 



5<'/8 5 



X 4798.169 



30/2 II 3 



a p 2 



a/2 It I 



X 4805 . 285 



30/2 n 3 



a n 2 



a/2 p I 



X 6337.048 



33 n 6 



33/2 3 



a p 2 



X 5941.985 



30/2 n 3 



a p 2 



a/2 n I 



Septuplets. 



Iron: 



X 4009 . 864 

 23 8 



a n 4 

 3a/4 P 3 



o p o 



X 4191 



23 

 3 

 O 



595 

 n 2 

 n,p I 

 p o 



X 4352.908 



(23 4)? 



33/2 n 3 



3/2 p I 



o p o 



X 5079.921 



28 K 2 



3 n?,p I 



Op O 



Titanium: 



X 4298.828 

 3 2 

 3/2 n,p I 

 o p o 



