12 C. V. L. CHARLIER, 
I 
values of the same quantities and moreover of = W". The values 
obtained in this manner are, however, impaired by considerable mean 
errors and it is preferabable to combine both in such a way that the corre- 
sponding normal equations obtained from (12) and (12°), respectively, 
are added together. The coefficients of the normal equations have the 
following values (duly checked with the help of the sum of the coeffi- 
cients in the equations of condition) 
(au) = — 2.988, (Yun) = + 92.67; (yuya)- — 8.116 
Dauer, (aa) = 63.324 
(yat!) = + 8.783 5 (guis) = + 32.1105 (yu) = 10.3525 (usps) = — 29.422 
(yo v") = =, 5.298); (7227/22) = AO (722722) = +- 0.362 ; 
6 
(yat) = — 10.288; (7224/22) = + 97.157. 
Combining these values we get the following form of D 
D=|+ 6.037, + 1.51, + 14.571 , — 10.288 | 
+ 1.4531, + 124788, — — 1.764 , — 29.442 
+ 14571, — 7.764, + 90.057, + O.s62 
— 10:288. — 29:442. 4 Olse2 , + 97.157 | 
The values of the proper motions w' and v' are expressed in 
seconds of are per year. For having results comparable with those 
from the radial velocities we have to express w' and v' in radians per 
stellar year; h. e. we have to multiply uv’ and v' (or the left members 
of the normal equations) by 
10* ey 4 
20626508 55 
Denoting the mean value of a quantity by the index 0, we thus 
get 
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