on the spark spectra of titanium, chromium and manganese. 75 
X 
r/X/X 2 
+ 1-15 
2822-10 
0 
-1-15 
+ 1-26 
2818-42 
0 
2816-89 
-1-26 
+ 1-39 
2812-03 
0 
-1-40 
+ 0-82 
2800-81 
0 
- 0-82 
2792-20 
2789-43 
+ 1-72 
0 
-1-70 
+ 2-43 
2787-67 
0 
-2-41 
+ 1-33 
2785-73 
0 
-1-33 
2782-42 
2781-17 
+ 1-07 
2780-35 
0 
-1-07 
+ 1-48 
2778T1 
0 
-1-48 
+ 1-31 
2768-65 
0 
- 1-31 
2766-61 
2765-96 
4- 1-80 
0 
-1-80 
+ 1-47 
2762-70 
0 
-1-47 
+ 1-65 
2759-46 
0 
- 1-65 
The middle constituent was removed by calcite. 
do. 
Too weak to measure. 
do. 
The middle constituent was removed by calcite. 
Too weak to measure, and the constituents blurred into one 
another. 
The middle constituent was removed by calcite. 
do. 
do. 
do. 
Too weak to measure. 
The middle constituent was removed by calcite ; it was broad 
and strong and the outside edges of the two outside con- 
stituents were a little more diffuse than the inside edges. 
The middle constituent was removed by calcite. 
