18G 



PROCEEDINGS OF THE AMERICAN ACADEMY 



(4) 1874. Jan. 8. 



(16) 



Nov. 7 



(17) „ Nov. 12 



(18) „ Nov. 25, 



13 h. 30 m. Procyon: examined carefully for about 20 min- 

 utes, — distant companion plain. Seeing good, and rays 

 round star quiet : no small companion. Holden. 



10 h. Very good seeing at times : ... no near companion to 

 Procyon. Holden. 



Seeing very excellent : ... no near companion to Procyon. 



HOLDEX. 



Procyon. Good seeing. Struve's companion not seen. 

 Newcomb and Holden. 



Suspected a companion following more distant tban com- 

 panion to Sirius. Position angle 76° or 77°, by rough 



■ sketch. (See observations of Nov. 12, 25, and 26.) 

 Holden. 



Procyon : poor image. Holden. 



6h. 15 m. to7h. P)-oc//on: distant companion plain. Procyon 

 unsteady, and poor seeing : no suspicion of near com- 

 panion. Holden. 



Procyon: no near companion. Holden. 



7h. 30 m. Procyon: image good. Struve's companion not 

 seen. G. W. Hough, Newcomb, and Holdes^. 



7 h. 30 m. Procyon : no near companion. Holden. 



About 8 h. P;-oc2/o?i; no near companion. C. H. F. Peters. 



Procyon: aperture reduced to 15 inches. Image poor: no 

 near companion. Newcojib. 



17 h. Sirius: companion better seen with aperture reduced 

 to 22 inches. — Procyon : aperture 22 inches. Struve's 

 companion not found. Definition fine. 



17 h. 44 m. Distant companion can still be bisected with 

 ease in the increasing daylight. 



17 h. 47 m. Bisection difficult, but companion plainly seen 

 away from wire. 



17 h. 51 m. Companion cannot be certainly seen at all. I 

 am surprised at its sudden disappearance in the daylight. 

 Newcomb. 



[The sun was about G° below the horizon at 17 h. 50 m.] 

 Cambridgeport, Massachusetts. Using the McCormick 

 telescope; aperture, 26J inches. Seeing i-er// good. Pro- 

 cyon: no trace of Stkuve's companion. Alvan Clark, 

 G. Clark, and A. G. Clark. 



Procyon: seeing about the same as at Cambridgeport 

 [Nov. 7]. No sign of Struve's companion. Observation 

 doubtful of a small companion 10" off, marked in drawing 

 position angle = 68° from sketcli. Alvan G. Clark, 

 with 26-inch refractor at Washington. 

 , 14 h. 30m. to 15 li. 10m. Procyon: seeing not r-ery good. 

 Struve's companion not seen. Small companion sus- 

 pected, [p = 47° from sketcli.] 



