Lunar Details. 441 



LUNAR DETAILS.— OCCULTATIONS. 



BY THE REV. T. W. "WEBB, A.M., F.R.A.S. 



Increasing evidence is constantly adding to the conviction, 

 already sufficiently strong, that in proportion as more powerful 

 telescopes and more careful attention are brought to bear 

 upon our satellite, the inadequacy of existing representations 

 will become more apparent ; and that, without a more minutely 



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accurate delineation of the surface, the majority at least of our 

 conclusions as to continuance of physical change are insecure. 

 Our readers may be interested in becoming acquainted with 

 an instance of this, which came before the writer not long ago. 

 In our number for February last, a diagram was given of the 

 great crater Aristoteles and its immediate neighbourhood, pretty 

 accurately copied from the map of Beer and Madler; and from 

 its character, as well as that of their accompanying description, 

 it would appear that they paid much attention to this curious 



