IN PHYSICAL ASTRONOMY. 
12 ye, cos (2t + z + y) — ye 2 cos (2t — 2x — y) + y 2 e 2 cos (2 t — 2x + y) 
[160] [.63] [,64] 
20 20 
— ye 2 cos (2f + 2x — y) + — e 2 cos (2 t + 2 a? + y) 
[105] 
[166] 
1 ftf) 1 ftf) 
+' yee t cos{2t — x— z — y) — — yee,cos (2 t — x— z + y) 
[169] 
+ 7^ r ee i cos ( 21 + x + 2 — y) — y ee i cos ( 21 + x + 2 + y) 
— ~ y e e t C0S (2 i — x + z — iy) + 22yee,cos (2 t — x + z + y) 
[171] 
- X + 2 
[175] 
b ®— J 
[177] 
2 z - 
[131] 
[170] 
P + : 
[172] 
■ X + 2 
[176] 
QQ CO 
— 22 7 ee /cos (2< + x — z — y)+ ^yee^cos (2 t + x — z + y) 
[178] 
~ e, 2 cos (2 < — 2 ? — jf) + ^ e, 2 cos (2 * — 2z + y) 
[182] 
(J£) -1 - - 3 ■-• {^} + 3. v {'•'+ *•} 
- f l {r B - A 8 } - J2 {r 8 + * 8 } + ^ [r,/- X,,} + |r u ' + A 
- fjj «*«<*{ V-^m} “ || e®ei a {*■,«'+Am} } sin2 * 
[ 1 ] 
+{ - i {-'+-■}- fl S - - -3} - i'{^' + -4 
+ |^{r 4 ' + A 4 } +liy 2 s 147 + 12 y 2 s H7 j- ecos# 
[ 2 ] 
+ { + 17 ^7 27^ + ^ e, 2 {r 5 '-A 5 } - 22 e, 2 jr 5 ' + A 5 j j e sin (2 t - x) 
[3] 
+ { ~ Yl r °' ~ § r *~ II e ' 2 { r > ~ } + Yj e ? { :r *' + } } e 1sin < 2 1 + x > 
