COMPARISON-STABS . 



CXI 



The Greenwich Twelve-Tear Catalogue gives us eight stars, and its welcome supplement, the 

 Greenwich Catalogue for 1850.0, thirty-five more. The last mentioned addition was received 

 after the preparation of a catalogue for final adoption, but the new material was too important 

 to be lost, and the computations were, therefore, recommenced from the point at which these 

 places could be incorporated. The comparison-star used at Greenwich on the 8th December, 

 1849, is, however, unfortunately not in this catalogue, and a trustworthy place can nowhere be 

 found. Five of the stars in the two lists are identical, but the materials afforded by each 

 catalogue are separately given for the sake of greater convenience. 



Comparison- Star a from the Twelve-Tear Catalogue. 



