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PROCEEDINGS 



OF THE 



American Philosophical Society 



HELD AT PHILADELPHIA 



FOR PROMOTING USEFUL KNOWLEDGE 



Vol. LIX. 



1920. 



No. 2. 



CONTENTS 



The Parallaxes of Fifty Stars (Second List) Determined at Sproul Ob- 

 servatory. By Joiix A. Miller, Ph.D., with the cooperation 

 of John H. Pitman and Hannah B. Steelp: 



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PHILADELPHIA 



THE AMERICAN PHILOSOPHICAL SOCIETY 



104 South Fifth Street 



1920 



