THE COLOURED STARS ABOUT KAPPA CRUCIS. 



87 



As soon as the map was thus completed, the positions of all the 

 stars with their magnitudes (which, to avoid mistake, were entered 

 on the working map) were read off and entered in a catalogue, 

 substituting of course, in the case of measured stars, the micro- 

 meter results. The catalogue places of the stars put in by eye- 

 draft are therefore not more correct than the map, but the 

 catalogue is a convenient way of recording the magnitudes and 

 comparing them withHerschel's catalogue, formed in a similar way. 



The map now exhibited was then lithographed, and the proofs 

 of it were pulled with the white lines carried across, and the 

 positions of all the stars carefully compared with the original. 

 As soon as all the corrections had been made, the lines were 

 blotted out, except such parts of them as remain at the margin 

 to indicate their places, which if required may be easily extended 

 across for the purpose of measuring ; but it was thought the 

 object was much better represented as it is printed than with the 

 lines on it. The telescope used was the Sydney refractor, 7i in. 

 aperture, 10 feet 4 in. focal length, poAvers from 80 to 400. The 

 colours I have also examined with a silvered glass reflector, in 

 which they appeared to me as seen in the refractor and here 

 recorded. 



Catalogtte of Stars in tlie Coloured Cluster about K. Crucis. 



E.'s 

 Ko. 



H.'s.Ifo. 



& 

 Letter. 



Mag. 



Sees. 



before 



a 



Sees of 



Dec. 



+ S— N 



of a 



STotes and Remarks. 



1 



Itt 



10 



s. 

 27-8 



+ 178-3 



Mic. measm-es, 27-9^ 27-7^ 178-1", 178-5" 



2 





12 



24-8 



— 60- 



I-Tot in H. 



3 





11 



24-5 



+ 112- 



>> 



4 





12 



24-3 



+ 10- 



)j 



5 



"i 



11 



21-3 



+ 204-1 



Mic. meas., 21-3' 204-1" 



G 





11 



190 



+ 48- 



Not in H. 



7 





15 



18-0 



+ 240- 



i> 



8 



"e 



15 



14-5 



-i-224- 





9 



4 



12 



12-8 



+ 94- 



H. records a star, No. 5, near this, -which 

 I did not see. 



10 



3 



13 



12-2 



+ 138- 





11 



11/c 



lOi 



12-3 



+ 376- 



Mean of 14 measures in E.A. and 5 in 

 decbi., sho-wing since H. a change of 

 6- 1'' and 9" in decln. — both increased. 



12 



8 



12 



12-0 



+ 272- 





13 



7 



lOJ 



120 



+ 163-1 



Mic. meas., 120^ 1631" 



14 



9 



14 



9-4 



+ 214- 





15 



12 



12 



8-0 



+270- 





16 





13 



7-5 



— 4- 



Not in H. 



17 



14 



12 



40 



+ 224- 





18 



10 



13 



4-0 



+ 18i- 





19 





13 



30 



— 30- 



Not in H. 



20 





13 



2-9 



+ 52- 





