on the spark spectra of titanium, chromium and manganese. 5 L 
X 
rfX/X 2 
3875-42 
Too weak and too diffuse. 
3836-19 
+ 1-95 
0 
-1-93 
3828-40 
\ 
3814-70 
i do. 
3818-49 
3796-00 
J 
3786-13 
+ 1-35 
0 
-1-35 
| The most refrangible constituent was very weak. 
3776-19 
+ 2-10 
0 
-2-10 
| do. 
3771-80 
+ 2-20 
0 
- 2-21 
3762-00 
+ 2-03 
0 
_ ? 
[ The most refrangible constituent widened into the least re- 
f frangible of 376T42. 
3761-42 
+ 1-30 
0 
-1-27 
3759-42 
+ 1-67 
0 
-1-64 
3757-82 
+ 1-19 
0 
-1-19 
| The middle constituent was removed by calcite. 
3753-80 
Too weak and diffuse, and widened into 3753-0. 
3753-00 
+ 1-75 
0 
- 1-72 
3748-23 
+ 1-28 
0 
- 1-28 
j- The middle constituent was removed by calcite. 
3741-89 
+ 1-62 
0 
-1-64 
3741-28 
+ ? 
0 
- 1-56 
1 
j The least refrangible constituent widened into 3741-89. 
3730-01 
+ 0-98 
0 
-0-98 
j- The middle constituent was removed by calcite. 
4—2 
