PROCEEDINGS 



OF THE 



ACADEMY OF NATURAL SCIENCES 



OF 



PHILADELPHIA. 



1920 



January 20. 



The President, John Cadwalader, A.M., LL.D., in the Chair. 



Seventy-two persons present. 



The deaths of the following members were announced: Rebecca 

 Gibson, Annabelle E. Richards, D. Murray Cheston, William Osier, 

 Horatio C. Wood, and Edwin S. Dixon. 



Mr. James A. G. Rehn made a communication entitled: "The 

 Work of the Hebard-Academy Expedition of 1919 in Nevada and 

 California." (No abstract.) 



The Council reported the appointment by the President of the 

 following committees: On Policy— Messrs. E. G. Conklin, R. A. F. 

 Penrose, Milton J. Greenman, J. Percy Moore, George Vaux, Jr., 

 George E. de Schweinitz, Effingham B. Morris, and George L. 

 Harrison, Jr. . On the Hayden Memorial Aw^\rd — Messrs. R. A. 

 F. Penrose, Chairman, Edgar T. Wherry, Charles D. Walcott, and 

 John Mason Clark. 



William W. Matos, J. E. B. Buckenham, David E. Harrower, 

 Harry W. Trudell, Sabin W. Colton, Jr., Hamilton Bradshaw, 

 Childs Frick, and Arthur R. Spencer were elected Members. 



The following was ordered to be printed: 



