188 PROCEEDINGS OF THE AMERICAN ACADEMY 



No signs of 2's companion : image fine. At about 11 h. Procyon examined 

 by Professor J. C. Watson, and Holden. Where Alvan G. Clark found a 

 companion (see Observing Book, Nov. 12, 1874), which was verified by Holden 

 (1874, Nov. 25 and Nov. 26), Professors Watson and Holden found three. 

 One of these is somewhat brighter than the other two (see sketches I. and II.), 

 and this was first seen by Professor Watson (i.e., on Jan. 12), while Holden 

 saw the preceding one ; and, finally, all three were well seen, and the first seen 

 was measured in both positions of the instrument east and west of the pier, by 

 both observers. The seeing was extremely fine, and these images were well 

 and steadily seen for about two hours (till 13 h.). In the sketches, a is the old 

 companion, p = 312° [s ^ 42"]. 



SUMMARY. 



( p = 10° s = 6.// : J. C. W. 



Telescope W. J p = 38 s = 7. 9 : E. S. H. 



^ p = 34 ... : J. C. W. 



_, , -- ( p = 82° s = 9."7 : J. C. W. 



Telescope E. j J _ 3^ s = 8. 8 : E. S. H. 



Holden suspects a 4th companion somewhere about p = 320° — 380°. It 

 should be noted further that 400 and 400 A are different eye-pieces, and that 

 these satellites were seen in all parts of the field of view, and in all positions of 

 the eye-piece. 



(21) New companions to Procyon : 1876, Jan. 20. The seeing is not good. 



Reading for position angle : 



214° Holden p = 28° 

 224 Peters p = 18 

 212 Watson p = 30 



189° Peters p = 53° 

 188 Watson p = 54 



.242° Peters p = 0° 



Saw the brightest of the three companions without difficulty and quite 

 steadily, and caught occasional glimpses of one of the others. D. P. Todd. " 



Neither Peters, Watson, nor Holden see O.S's companion. 



(22) Companions of Procyon : 1876, Jan. 21. 10 h. 11 m. Examined 

 Procyon with power 400. Images generally blurred and flaring. 

 Irregular whiffs of wind. During occasional moments caught quite 

 distant glimpses of one or two companions about p 45° greater than 

 old companion, but too unsteady to measure, [p = 367°] New* 

 comb. 



