520] ON THE CENTRO-SURFACE OF AN ELLIPSOID. 365 
X 
y 
*i 
7] 
Vi 
X 
y 
X 
Y 
X, 
Ti 
-25 
o- 
-25- 
-25- 
-25- 
-25- 
2-988 
o- 
1-380 
5'326 
0- 
2-070 
5-326 
o- 
2-070 
-25-3 
4-2669 
-21-0664 
- 29-6002 
-38-3193 
-16-6728 
2-543 
0-360 
0-996 
4-394 
2-289 
2-491 
6-233 
1-957 
1-023 
-25-6 
6-3191 
- 19-3475 
- 31-9858 
-42-9911 
-15-4693 
2-148 
0-721 
0-662 
3-504 
3-189 
2-283 
5-956 
2-580 
0-584 
-26- 
8-1240 
- 17-8760 
- 34-1240 
-45-7879 
- 15-1047 
1-786 
1-175 
0-373 
2-780 
3-847 
1-948 
5-626 
3-005 
0-293 
-26-3 
9-8760 
-16-4573 
- 36-2094 
-47-5684 
-15-0106 
1-448 
1-500 
0-139 
2T59 
4-391 
1-426 
5-251 
3-346 
0-098 
-26-6 
11-6667 
-15-0000 
- 38-3333 
-48-7037 
-15-0000 
1-127 
1-947 
o- 
1*610 
4-869 
o- 
4-829 
3-651 
o- 
The calculations were performed before I had obtained the formulas in a, which 
would have given the results more easily.