Progress of Meridian Transit Observations , etc. 65 
O''. 23, with a probable error of ±0". 10. Second, for all stars 
observed in 1891-92 there resulted from a comparison of the dif¬ 
ferences between the observed declinations and the tabular dec¬ 
linations of the Berliner Jahrbuch, as between brighter and fainter 
stars, the value 0".29 with probable error ±0".10. So far as 
can be judged, the present series of observations for parallax 
does not promise such small probable errors for the final results 
as pertain to the methods with the filar micrometer and the he¬ 
liometer; but it promises, nevertheless, to make a somewhat val¬ 
uable contribution to the data for our knowledge of stellar dis¬ 
tances. 
Madison , Wis. 
5 
