MINUTES. xi 



Afternoon Session, 2 o'clock. 

 William B. Scott, D.Sc, LL.D., President, in the Chair. 



The presentation of a portrait of the late Edward C. Pickering, 

 LL.D., Vice-President of the Society, 1909-17, was made, on behalf 

 of the donors, by Dr. George E. Hale, and the gift was received 

 with thanks by the President. 



Prof. J. C. Merriam, a recently elected member, subscribed the 

 Laws and was admitted into the Society. 



The following papers were read : 



"Animal Luminescence and Stimulation," by E. Newton Har- 

 vey, Ph.D., Professor of Physiology, Princeton University. 

 (Introduced by Dr. H. H. Donaldson.) 



" The Phosphorescence of Renilla," by George H. Parker, S.D., 

 Professor of Zoology, Harvard University, which was dis- 

 cussed by Prof. Eric Dahlgren, 



" Feeding Habits of Pseudomyrmine Ants," by W. M. Wheeler, 

 Ph.D., Sc.D., Professor of Economic Entomology, Bussey 

 Institution, Harvard University, and Irving W. Bailey, As- 

 sistant Professor of Forestry, Harvard University, which 

 was discussed by Prof. Kennelly. 



" On Correlation of Shape and Station in Fresh Water Mus- 

 sels," by A. E. Ortmann, Ph.D., Sc.D., Curator of Inverte- 

 brate Zoology, Carnegie Museum, Pittsburgh. 



" Evolution Principles deduced from a Study of the Even-toed 

 Ungulates, known as Titanotheres," by Henry Fairfield Os- 

 born, Sc.D., LL.D., Research Professor of Zoology, Co- 

 lumbia University. 



"The Astrapotheria," by William B. Scott, Sc.D., LL.D.. Pro- 

 fessor of Geology, Princeton University. 



"The Middle Cambrian Beds at Manuels, Newfoundland, and 

 their Relations," by B. F. Howell, Jr., B.S., Instructor in 

 Geology, Princeton Univ. (Introduced by Prof. W. B. 

 Scott.) 



" The Glacial Anticyclone and the Blizzard in Relation to the 

 Domed Surface of Continental Glaciers," bv William H. 



