Proceeding*. ix 



April 1, 1911 -483d Meeting 



President White in the chair and 93 persons present. 



F. Y. Coville exhibited a pot of flowering trailing arbutus 

 grown from the seed. 



The following- communications were presented : 



"A Day in the Galapagos Islands ": W. E. Safford. 



"Tin- Keys, Corals and Coral Reefs of Florida ": T. Way- 

 land Vaughan. 



'e' 



April 15, 1911— 484th Meeting. 



The president in the chair and 57 persons present. 



0. P. Hay exhibited a fossil skull of a large fresh water snap- 

 ping turtle from Texas. 



('has. Warded Stiles reported progress of the International 

 Committee on Zoological Nomenclature. 



David White exhibited specimens of bituminous coal, show- 

 ing fragments of carboniferous plants. 



The following communication was presented: 

 ' The House Fly and Typhoid Fever" : L. 0. Howard. 



The paper was discussed by Dr. C.Gordon Hewitt, Dominion 

 Entomologist, of Ottawa, Canada, and several visiting physicians 

 of the city. 



May 13, 1911 — 485th Meeting. 



The president in the chair and 46 persons present. 

 A. S. Hitchcock gave a brief review of a recent number of the 

 North American Flora and of a paper by Nieuwland on the 



type of Ptliiiriini . 



The regular programme consisted of Biological Notes from 

 the recent Albatross Expedition to Lower California. Chas. H. 

 Townsend gave a general account of the trip. J. N. Rose dis- 

 cussed the desert vegetation, and Paul Bartsch the fauna of the 

 trip. 



October 21, 1911— 486th Meeting. 



President White in the chair and 54 persons present. 

 The following communication was presented : 

 'The Ice Age and its Extinct Animals " : 0. P. Hay. 



