290 



REPORT — 1865. 



Table for facilitating the Arrangement of a Catalogue of Lunar Objects. 



The preceding Table is based upon the following considerations : — 

 It is proposed to divide the visible hemisphere of the moon into four qua- 

 drants, as in Beer andMadler's map, which are numbered as follows : — N.W.I., 

 N.E. II., S.E. III., S.W. IT. 



Each of these quadrants to be subdivided into sixteen grand divisions, as 

 under, distinguishing the space between 



of long. 



of lat. 



of long. 



of lat. 



to 25 and 50 to 75 by the letter I. 



K. 



L. 



M. 

 N. 

 O. 

 P. 



Q. 



These grand subdivisions to be still further subdivided into spaces of 5° of 

 longitude and 5° of latitude. Each of the nine grand subdivisions included 

 between 0° and 75° of longitude and 0° and 75° of latitude will thus be divided 

 into twenty-five smaller spaces, and distinguished successively by the twenty- 

 four small letters of the Greek alphabet in their order, leaving one division 

 blank, which will always be the last, in each of the nine divisions. 



In each of the spaces included between 0° and 75° of longitude and 75° and 

 90° of latitude, designated by the letters N, 0, P, there are only fifteen 

 smaller spaces, which are distinguished by the first fifteen small letters of 

 the Greek alphabet. 



In each of the spaces included between 75° and 90° of longitude there are 

 only fifteen portions or areas of 5° of longitude and 5° of latitude, and these 

 are distinguished by the three of the first five Greek letters in each corre- 

 sponding group of five in the same parallels of latitude. 



