sentences:  C. Donald Shane
  
  Charles Donald Shane (September 6, 1895 – March 19, 1983) was an American astronomer and director of the Lick Observatory of the University of California from 1945 to 1958, during which time he carried out his monumental program of counting external galaxies and investigating their distribution.In 1920, Shane received his doctorate in astronomy from the University of California at Berkeley and was appointed as an instructor in mathematics there.