Y. — The Butherfurd Photographic Measures of Thirty-four 

 Stars near "Bradley 3077." 



BY HERMAN S. DAVIS. 

 Read May, 1897. 



1. The methods of reduction employed in the formation of this 

 catalogue are the same as have been described in my paper on 

 Sixty-five Stars near 61 Cygni, except that no corrections for 

 parallax were applied. The computations have been almost en- 

 tirely performed by Mrs. Davis, who has also rendered consider- 

 able assistance in the computations connected with all my other 

 papers on the Butherfurd Measures. 



In this presentation of results the Tables have been given num- 

 bers to correspond with the similar tables in the paper on 61 

 Cygni, reference to which will make clear any matter not suffi- 

 ciently intelligible from the captions to the various columns. 



2. Nearly the mean date of observation, 18*74.0, was selected as 

 the epoch to which the observations were reduced. Thus'we have : 



A^ = — 8" + [0.919] A + [0.246J B + [o.i6 7n ] C+ [9.537] D 

 A Pu = o + [0.919] A + [0.246,,] B + [o.i67„] C + [9-537] D 

 as the correction for precession, nutation and aberration in posi- 

 tion-angle ; and, for all years, to correct for aberration in dis- 

 tance : 



As= { [4.058] C+ [4.4i6n]2>}s 



3. The logarithms of the Besselian day-numbers, taken from the 

 American JEphemeris, are : 



Plates. 



log A. 



log B. 



log a 



logZX 



1. 2, 3, 



9.786 



o.8o8 n 



I -053 



1.213 



4, 5, 6, 



9.805 



o.8oi n 



0.958 



1-253 



7, 8, 



9-336 



o.857n 



0.776,, 



I.287n 



9. 10, 



9.411 



0.854,, 



o.4i8 n 



1.306,1 



11, 12. 



9.417 



o.854n 



o.364n 



I.3°7n 



(161) 



