( 416 ) 



diesmal sclion recht schwach, wahrnehmbar schwacher als im Sep- 

 tember. Die Messung ist deshalb auch wohl etwas unsicherer." 



(Note of the 13^^ of October 1906). 



Concerning the observation on the 28^^ of August I preferred the 

 position obtained from 3 reference stars. 



For the reduction to the apparent place, I used as before in the 

 ephemeris the constants of the Nautical Almanac, where the short 

 period terms are omitted. Assuming for the parallax of the sun 

 8"80, I find for the Heidelberg Observatory the following constants : 



X= — 0ii84"i54^^8 

 tg(p' = 0.06404 

 ^ = 9.58267 

 D — 0.82425 

 which are used for the computation of the parallax of the comet. 

 The following table gives an account of the reduced observations. 



TABLE I. 



I used for comparison with the ephemeris my original computations, 

 which contained in « as well as in ö one decimal place more than 

 the published values. The computed places and their comparison with 

 the observed positions, are given in the following table. 



TABLE IL 



