Smithsonian Report, 1935.- Wright 



Plate 4 







•,> 



^'S'im}^">^ ' '*^»^ 





tS , ■ 





F. G. Pease. Mount Wilson Observatory, Sept. 15, 191V. 



Southeast Section of Moons surface. 



The large sharply defined crater near the center of the view is Tyeho. It is 17,000 feet deep 

 across; from it white streaks radiate for long distances. Clavius, a still larger crater, 

 diameter and located above Tycho, is one of tlie most interesting features on the moon. 



and 54 miles 

 142 miles in 



