BULLETIN OF THE 



Southern California 



Academy of 



Sciences 



LOS ANGELES, CALIFORNIA 



Volume XX Part 2 

 August, 1921 



CONTENTS 



Page 



Butterflies of California. Dr. J. A. Comstock 45 



Studies in Pacific Cosst Lepidoptera. Dr. J. A. Comstock 46 



New Bontanical Species from S. Cal. Dr. A. Davidson 49 



Further Notes on Zausclmeria I. Geo. L. Moxley 54 



The Immaterial Basis of Heredity. James R. Allen 55 



The Diameter of a Orionis. F. G. Pease 60 



Interesting Facts About Our Own Planet. C. N. Holmes 60 



On the Ages of the Stars. F. R. Moulton 63 



When An Eclipse Prevented War. W. F. Rigge 63 



Tlie President's Message 64 



Annual Reports , 66 



COMMITTEE ON PUBLICATION 



William A. SPAULDING, Chairman 



Anstruther Davidson, CM , M.D. DR. John A. Comstock 



Office of the Academy 530 Auditorium Bldg. 

 LOS ANGELES, CAL. 



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