Pritchett — Double Star Observations. 313 



2 2272 (70 Ophinchi). This is one of the most interesting 

 of the binary systems, and one to which special interest has 

 been drawn by the paper of Dr. See, A. J., 363. The fol- 

 lowing measures give a very safe position for 1896 : — 



1896.39 292°. 3 2". 19 6n Hussey 



.51 291 .3 2 .40 3n Aitken 



.58 289 .2 2 .19 5n Pritchett 



M 287 .1 2 .12 9n Schur 



.74 288 .6 2 .19 6n Leavenworth 



1896.59 289 .7 3 .22 Mean 



1 2286. Has changed but 6° in 65 years. 



2 2311. Probably a case of rectilinear motion. 



1830.30 170°.7 8". 65 I 



65.50 165 .1 6 .72 De 



80.57 161 .6 6 .49 P 



96.61 159 .5 5 .43 'P 



O 2 358. Probably a binary. 



1845.41 227°.0 1".23 0. 2 

 71.90 204 .7 1 .72 De 



96.62 194 .8 1 .98 P 



2 2541. The observations of different observers show con- 

 siderable discrepancies, but the change is due probably to 

 rectilinear motion. 



1828.76 343°.3 



51.86 338 .4 



67.90 331 .5 



80.61 332 .0 



96.63 333 .2 



Issued April 22, 1897. 



