Variation of L 6887 (h. Are) 81 
The normal equations resulting from the equations of condition 
are : 
d 
4°75 AH - 15°75 AP—0.026=0 ; 
—15°75 AE +75:25 AP+0.17 =0; 
which being solved give : 
d 
AE= — 0-008. 
AP= —0:004. 
The corrected elements therefore are : 
Periodic time of 14 variations = 61:9610 days. 
Periodic time of 1 variation= 4°42579 days. 
Epoch of mean minimum = 1893, March 15:°522. 
With these elements an ephemeris can be formed for 1893. The time 
given is Cape mean time, counting from noon. Thus April 6, 6 o’clock 
evening, is April 6°250. 
Date of Minimum. Date of Minimum. Date of Minimum. 
1893. April 2°226 July 4:169 Oct. 5110 
6°652 8595 9°536 
AOWG 13:020 13961 
15:503 17°446 18°387 
19:929 ALESHA 22°8138 
24°355 26:297 27°239 
28°781 30°723 31°665 
May 3:207 Aug. 4:149 Noy. 5:090 
7633 8:575 9°516 
12:059 13-001 13°942 
16°485 17:°427 18:368 
20°911 91°852 22794 
25'337 296:278 27:°220 
29°762 30°704 Dec. 1°645 
June 3°187 Sept. 4:130 6-071 
7614 8:596 10°497 
12°039 12°982 14:923 
16:465 17:408 19°351 
20°891 91°834 23-777 
25°317 26°259 98:202 
29°7438 30°685 1894. Jan. 1:°629 
The form of the curve may best be illustrated by grouping in one 
mean curve all the observations made during May, June, July and 
August, 1892. 
