Smithsonian Report, 1935. — Wright 



PLATE 3 







F. G. Pease, Mount Wilson Observatory, Sept. 15. I'.i I .i 



East Central Portion of Moons Surface. 



Copernicus is a magnificent crater 56 miles across and dominates this "metropolitan" area of the moon. 

 Observe the streaks of light materials which radiate from Copernicus. 



