NEBULA, CLUSTERS, ETC. 



89 



List of Figured Nebulae — Continued. 



Following are given lists of photographs of clusters and double 

 stars which are as yet unpublished. These lists are intended to 

 facilitate comparisons between work done by different observers. 

 The data were furnished by the observers themselves. 



List of Photographs of Star Groups and Clusters. 

 By Dr. L. M. Rutherford. 



The " number of stars " is the number of measurable stars on the photo- 

 graphic plates, which include a field of about 1° 50'. 



Central Star of Group. 



(i Cygni 



a — 20 h 38 m \ 



S = +35° 8' J 



21 Cvgni 



B. A. C. 698G t 



27 Cygni 



34 Cygni 



37 Cygni 



58 Cygni 



59 Cygni 



61 Cygni 



a = i9 h 38 m \ 



5 — _|_ 40° 0' / 



a = 19 h 38 m 6 = + 27° 7' 



a = 20" m (5=:+ 31° 53' 



Orionis 



Prsesepe 



12 Comae Berenices 



y Cassiopiae 



/u Cassiopise 



B. A. C. 80:3 : 



Perseus 



B. A. C. 723 



Pleiades ., 



40 Eridani 



6 Urs. Majoris 



B. A. C. 4010 



Arcturus 



41 Serpentis 



44 B«6tis 



72 Herculis 



70 Ophiuchi 



20 Yulpeculse 



Number of 

 measurable stars. 



36 

 40 



70 

 130 

 150 



40 

 80 



48 



50 



65 

 100 

 60 

 30 

 10 

 38 

 48 

 24 

 90 

 12 

 5G 



10 

 11 



8 

 3(> 



54 



