1906.] NATURAL SCIENCES OF PHILADELPHIA. 509 



December 4. 

 Mr. Arthur Erwin Brown, Vice-President, in the Chair. 



Fifty-one persons present. 



The death of Robert P. Morton, a member, December 1, 1906, was 

 announced. 



Messrs. George and William S. Vaux, Jr., made a report on 

 their studies of the glaciers of the Canadian Rockies and the Selkirks, 

 supplementary to the communication of April 17. The two papers 

 will be combined and published later. 



December 18. 



The President, Samuel G. Dixon, M.D., in the Chau-. 



Thirty-seven persons present. 



The following were ordered to be printed : 



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