III. The Distribution of the Stars to the eleventh 

 Magnitude. 



1. The reduced Star Densities. 



The following tables give for each plate the star density reduced to the num- 

 ber of stars per square degree and including all stars to the eleventh magnitude of 

 the Harvard Scale. At the foot of the tables are given: 



= The limiting magnitude of the centre. 

 Z) = The average star density. 



