a Problem in physical Astronomy . 
5 % 
3-9621 - 
7-i 3 6 
1-38630=? 
0-00916 = lcc 
Sum of these two logs. "4-098 
J' 5 t 975 
2-172 
0*00013 = me* 
5*00562 = 2 a 
°* 0 33°9 = \ raCC 
Sum of these two logs. 4/692 
- * 
0-00049 = ^ a c 4 
0-8085,343 
7 r(tf~j- 6 )^ 07334,427 
Diff. of- these two logs. 0-0750,916 
6-43479 = / Su . m of these 
TfOT-/ 4 six terms. 
1*18875 = A 
A - 0.6880,240 
a - 0.1828,913 
Sum of these two logs. 0 8709,153 - 
7*42874 = A a 
07951,840 - 
6 ' 2 3999 = Aa~ A 
T 01411,141 
J 
— A) 0-9362,981 8-63571 = B. 
We have now the values sought, viz. A = 4- 8756, and 
B = 8-6357 ; and from these may the values of C, D, E, &c. be 
easily found, by the equations given in Art. 20. of the preceding 
paper. I have set them down here only to five places of 
figures, it being evident, from the value of a — b, that the result 
cannot be depended on to more places than five, which, how- 
