and positions of 36 double and triple stars, &c 359 



No. XXIV. R. A. 17^ 4"^ ? Decl. 26° 18' S. 



S6 Ophiuchi ; H. and S. 243. 



continued. 



In the former Paper the attention of astronomers was par- 

 ticularly directed to this star, on account of a considerable 

 proper motion which it was supposed to have, in common 

 with a very distant star 30 Scorpii ; and as the point is a very 

 interesting one, the preceding observations were made, with 

 a view of placing the matter beyond doubt : a few comments 

 upon them will perhaps be not without their use. 



^A 38 Ophiuchi 

 •B 



B 



•A s6 Ophiuchi 



• so Scorpii 



In the above diagram, the close stars of A B of 36 Ophiuchi 

 are represented relatively to the star C, to 30 Scorpii, and 

 to A B of 38 Ophiuchi, as seen in the telescope ; C preceding 

 A of 36 to the north, and A of 38 following it to the south. 



First, as it regards Declination. 



If any proper motion of 36 exist in this direction, (supposing 

 the star C at rest) the effect of it will be to increase, or diminish 



