VI MINUTES. 



Carl H. Eigenmann, Ph.D., Bloomington, Ind. 



Charles Holmes Herty, Ph.D., New York. 



Herbert E. Ives, Ph.D., Philadelphia. 



Waldemar Lindgren, M.E., Ph.D., Sc.D., Cambridge, Mass. 



Walton Brooks McDaniel, A.B., Ph.D., Philadelphia. 



Winthrop J. V. Osterhout, A.M., Ph.D., Cambridge, Mass. 



Harold Pender, Ph.D., Philadelphia. 



Frederick Hanley Seares, B.S., Pasadena, Cal. 



George Owen Squier, Ph.D., Washington, D. C. 



Charles P. Steinmetz, Ph.D., Schenectady, N. Y. 



Oscar S. Straus, A.M., Litt.D., LL.D., New York City 



Alonzo Englebert Taylor, M.D., Philadelphia. 



Edwin Bidwell Wilson, Ph.D., Cambridge, Mass. 



Foreign Residents. 



Archibald Byron Macallum, M.B., Ph.D., D.Sc, LL.D., F.R.S., 

 Toronto. 



Sir David Prain, M.A., LL.D., F.R.S., Kew. 



Morning Session — 9.^5 o'clock. 



George Ellery Hale, Ph.D., Sc.D., LL.D., F.R.S., Vice-President, 



in the Chair. 



The following papers were read : 



" Lighting in its Relation to the Eye," by Clarence E. Ferree. 

 Ph.D., Professor of Psychology, Bryn Mawr College. (In- 

 troduced by Dr. W. W. Keen.) 



" Factors Influencing the Sex Ratio in the Domestic Fowl," by 

 Raymond Pearl, Ph.D., Biologist, Maine Agricultural Ex- 

 periment Station, Orono, Maine. 



*' Significant Results of Scientific Investigations Applied to 

 Fishery Problems," by Hugh M. Smith, M.D., LL.D., Com- 

 missioner of Fisheries, Washington, D. C. (Introduced by 

 Dr. Clarence E. McClung.) 



"A Description of a New Photographic Transit Instrument," 

 by Frank Schlesinger, Ph.D., Director of the Allegheny 

 Observatory, University of Pittsburgh. 



