on the spark spectra of titanium , chromium and manganese. 55 
\ 
dX/X 2 
3329-63 
3326-92 
+ 1-71 
0 
-1-72 
/There appeared to be three overlapping wide and diffuse con- 
stituents ; the middle one a little stronger than the others, 
1 and nearer to the least refrangible one than to the most 
refrangible. On analysis by the caleite the least refrangible 
constituent appeared to be wider than the most refrangible, 
but they were too weak and diffuse to measure. 
♦ 
3323-05 
+ 1-81 
0 
-1-83 
3318-20 
+ 2-18 
0 
-2-16 
3314-61 
Too weak and diffuse. 
3309-62 
do. 
3308-99 
+ 2-10 
0 
-2-09 
3288-70 
\ 
3288-57 
- The constituents widened and blurred into one another. 
3288-30 
3287-81 
+ 1-33 
0 
- 1-32 
3280-17 
Too weak and diffuse. 
3279 07 
+ 1-95 
0 
-1-98 
3277-10 
+ 1-76 
0 
-1-77 
3275-42 
do. 
3263-83 
+ 2-56 
0 
-2-54 
3261-74 
+ 1-36 
0 
-1-34 
3260-41 
+ 2-58 
0 
-2-59 
3254-40 
+ 2-14 
0 
- 217 
