(231) 
one and the same point of the sky, does not generally fulfill the 
eondition 
Sr SOs on Gea EN 
while STEIN asserts that this condition will be satisfied. !). 
To refute my contention he shows that a determination from the 
components y, i.e. from the condition 
] 2 
= (ze SEEN sin Tx) TODD ee ee 
Vv 
for stars at one and the same part of the heavens, does indeed lead 
to the condition (7). 
I never denied this. 
1) The determination from both components ¢ogether does satisfy the condition (7). 
h 
For if the derivatives of the expression (4) with respect to —, 4 and Dare equalled 
to zero, and if the values 
ar ax br _ OW ae  _e 
(ied 0D A dd WW Op 
are introduced, we have for the determination of the three unknowns the three normal 
equations 
h 
[es sin À —v) sin | =i 
5 
re Er (A sind —0)(= con 55 4 22) | 0 
dA 0 dra 
[ret (Sind —v)(— cos À ged |=. 
For a group of stars, situated at one and the same point of the heavens, these 
are reduced to the following: 
h - = 
— sind =v  (v=mean value of v) 
e 
b= 0; 
