( 182 ) 
(1) Ks Ra cos (60° # — 90° — Cox) 
(2) Ko Rs cos (60° « — 30° — Cz) 
(3) Ky Rs cos (60° # +- 30° — Cay) (4) 
(4) Ky Rs cos (60° « + 20° — Cy) a 
(5) Ko Rs cos (60° x4-150° — Cy) 
(6) Ky Rs cos (60° x4-210° — Cay) 
From the formulae (3) we deduce : 
a—b=p{ K, cos C, — P cos (C, + 30°) } sin 30° t 
— pt Ky sin Cy. + P sin (CG, + 30°)} cos 30° t 
a — ¢ == 9} Kij cos (30° — Cy) — Pos C, } sin 30° t 
+ gt Aj sin (30° — Cy) — Pein C,} cos 30° t 
in which 
=e EM 0960'S 078 SC 
q=4X 0.966 0.866 X Ry 
and , denotes the coëfficient of decrease, due to the fact that 
average values are used for a period of one month. 
By equating the corresponding coëfficients of these equations and 
formulae (2) and putting: 
Y = Ky win Cr X = Ki cos Ch, 
Y'= Psin Cp XK == P cos Cp 
We find: 
A/p = — Y — X'sin 30° — Y' cos 30° 
Blp=  X— X'eos 30° + Y' sin 30° 
A,/q= K zin 30°. Y 808302 — Y' 
Bilq= Xcos 30° + Y sin 30° — X' 
which are satisfied by the values: 
Y= 12.23 eM. X= — 11.14 eM. 
Y'=: —0 48 Ga X'= 421 » 
K, = 16.54 eM. P= “AME 
Cy =102° i9' » C, = 353° 30' » 
In order to obtain a serviceable combination for the calculation 
of the constants of the tide Ko, the values 
atb—2ec 
are formed. 
