46 CONTRIBUTIONS TO CHEMISTRY AND MINERALOGY. [bull. 167. 
Table I. — Test determinations of vanadium in presence of chromium. 
No. 
Chromic 
oxide. 
Vanadium 
pentoxide. 
Vanadium 
pentoxide 
found. 
Error. 
Milligrams. 
Milligrams. 
Milligrams. 
Milligrams. 
1 
1 
9.37 
9.22 
—0.15 
2 
1 
0.94 
1.04 
.98 
+ .10 
+ .04 
3 
1.5 
5.25 
5.49 
5.43 
+ .24 
+ .19 
4 
2 
5.62 
5.5 
5.5 
— .12 
-.12 
5 
3 
4.68 
4.78 
4.78 
4.83 
+ .10 
+ .10 
+ .15 
6 
3 
5.62 
5.58 
5.58 
— .04 
- .04 
7 
3.5 
18.74 
18.89 
18.97 
+ .15 
+ .23 
8 
6 
5.6 
6.1 
+ .50 
9 
6 
4.68 
4.78 
+ .10 
10 
6 
5.62 
5.58 
— .04 
11 
10 
5.62 
5.58 
— .04 
12 
10 
23.52 
23.81 
23.71 
-f- .29 
+ -19 
13 
10 
46.85 
46.98 
47.20 
+ .13 
+ .35 
14 
25 
23.52 
23.65 
23.75 
+ .13 
+ -23 
15 
87.5 
23.52 
23.71 
+ .19 
