410 PROFESSOR C. PIAZZI SMYTH ON THE 



does not display its effect on the other, as though it were distant and in optical 

 connection only. Hence, 



In CharacMr^ this pair is probably a slow binary, and with its orbit viewed 

 at a small angle. 



(24.) 452 CYGNI, R. A. 20*" 57" 4^, and Decl. + 38' 58' 0", January 1, 1862. 



Com- Mag- Colour. Position. Distance. Date. Authority, 



ponents. nitude. 



A 7 Deep yellow ^ ^ 



B 11 Emerald hue AB 297 (w 3) 17''o (w 1) 1832-87 Cycle. 



A 6 (2) Reddish orange (2) 



B 10(2) Greenish (2) AB 300 33 (m; 2) 1939 {w 1) 



C 13(2) Bluish (2) AC 86 53(m/1) 98-87 (w 0-4) 1862-73 Elchies. 



D 15-5(2) Bluish (2) AD138 54(wl) 54-76 (w 0-2) 



Further observations should be accumulated before any conclusions are ven- 

 tured on, as to the character of this group. At present it merely offers an 

 example, by the two additional stars introduced, of the happiness of reobserv- 

 ing an ancient stellar object with a larger telescope than before employed upon it. 



(25.) 1 PEGASI, R.A. 21^ IS"* 43^, and D. + 19° 12' 56", January 1, 1862. 



'. i A ' Colour. Position. Distance. Date. Authority. 



A ... ^ , 



B ... AB 308 19 37-10 178069 H^ 



A 4 



B 9-5 AB 310 (a3 24-70) 1823-87 e. 



A 4 Pale orange 



B 9 Purplish AB 310 48 (ic/ 8) 36-4 (w 5) 183395 Cycle. 



A 4-5 Strongly yellow 



B 8-6 AB31115 36-20 1835-86 2. 



A ... Orange 



B ... Azure 1844-5 Sestini. 



A ... Deep yellow 



B ... Lilac blue 1851-4 Spec. Hart. 



A ... Rich yellow (2) ... 



B ... Purplish blue (2) ... 1856-68 AltaVista. 



A 4-5 (2) Yellowish (3) 



B 9-0(2)Grey (3) AB 311 16 (w 2) 3709(w0'5) 



C 14-5 (2) Blue (3) AC 22 59 (ii; 1) 80-73(m^0-3) 1862-72 Elchies. 



In Magnitude, nearly steady. 

 In Colour, the same. 



