84 
MEAN ERRORS OF THE CATALOGUES AND OF THE DIFFERENCES. 
|m.e. position m.e. position m. e. m.e. diff. Weights 
zonecat. Küstner | difference per annum of 
| | Qacos¢e Oe | Leacosò La 
Catalogue 
a) according to AUWERS: 
Be A 03034 0/47 08021 0/29 «_0s040 0/55 + 0022 «0021! 1.99 2.18 
Be B 025 .30 | .020 .27| .032 .40 | .028 .025| 1.22 1.54 
Lei 1 043.55 | .022°.31 | .048 .63 | .031 .028| 1.00 1.22 
Leiden 050.52 | :020 .25 | .054 .58 | .020 .025| 1.01: 1.54 
b) according to data in the catalogues: 
Be A 03034 0’45  0s021 0”29 05040 0/54 07022 O”021 1.62 1.78 
Be B ‚021 .38 OLDS ed .034 .47 | .029 .029/ 0.93 0.93 
Lei I ‚037 .47 O22 .al ‚043 .56 ‚028 _.025/.'1.00 1728 
Leiden ‚044 .49 | „0201 25e)" «0487551026 023: \1 16 A 
As weights the means of those according to a and / are taken, 
namely : 
Weight of 4 
Catalogue ———— =e bouts 
&acose | Ad 
Be A 1.8 2.0 
Be B Sod 172 
Lei I 1.0 1.2 
Leiden ea 1.5 
7. Determination of the actual unknown quantities. 
The correction-terms having been applied, the equation 
a = Am 
now holds. ' 
In the further calculations I have kept the B groups and the F 
groups apart, but for the rest 1 have simply taken the means of the 
results of the different methods. After this, means were formed from 
the four catalogues with the weights given in $ 6. I thus obtained, 
always placing the 4 catalogues under one another in the same 
order, the following results for An. 
