RECORDS. 341 



Prof. E. B. Wilson, of Columbia College, discussed the changes 

 in our views brought about by experimental embryological study ; 



Prof. W. K. Brooks took up the discussion from the point of 

 genealogies ; and 



Dr. C. H. Merriam contributed illustrations from the protec- 

 tive coloration and dynamic variations of birds and mammals. 



Remarks were made upon this subject by C. S. Minot, E. D. 

 Cope, A. S. Hyatt, and C. V. Riley. 



The Society then adjourned to listen to Prof. E. B. Wilson, 

 who explained a satisfactory process of photographing micro- 

 scopic preparations, showing the cytological changes taking place 

 during maturation, fecundation, and segmentation. Photographs 

 thus taken were thrown upon the screen by the stereopticon. 



SECOND SESSION. 



Friday mornings December 28, iSgs- 

 W^ith the President in the chair, and a quorum present, the 

 Society proceeded to business at 9.30 A.M. The following per- 

 sons were elected members of the Society : 



William Ashmead, U.S. Department of Agriculture. 



Severance Burrage, Mass. Institute of Technology. 



W. E. Castle, Harvard University. 



H. E. Chapin, University of Ohio. 



J. E. Humphrey, Johns Hopkins University. 



M. M. Metcalf, The Woman's College of Baltimore. 



H. C. Porter, University of Pennsylvania. 



W\ H. C. Pynchon, Trinity College, Hartford. 



Charles Schuebert, U.S. National Museum. 



Norman W^vld, Brooklyn, N.Y. 



Professor Kingsley detailed to the Society the scheme of Dr. 

 H. H. Field by which certain needed reforms were proposed 

 in the bibliography of zoological literature. Professor Osborn 

 moved that a committee of seven (amended to five by Professor 

 Cope) be appointed by the President to consider the ways and 

 means, and supporting Dr. Field in his work, and that this com- 

 mittee report in print both in the American Naturalist and in 

 Science, 



