LIST OF OFFICERS FOR 1891. 



President, Wm. North Rice. 



r Samuel F. Clarke, 

 Vice-Presidents, J T. Wesley Mills, 



( C. O. Whitman. 

 Secretary, Henry H. Donaldson. 

 Treasurer, William T. Sedgwick. 



Metnbers of the Executive Committee elected from the 

 Society at Large. 

 H. F. Osborn, Richard Rathbun. 



LIST OF HONORARY MEMBERS. 



*Dana, James D., Ph.D., LL.D., Alineralogy, Zoology, Geology. 

 Professor of Geology, Yale University. 

 Yale University^ New Haven ^ Conn. 

 Leidy, Joseph, M.D., LL.D. 



Professor of Anatomy in the University of Pennsylvania, and 

 Director of the Biological Department, President of the 

 Faculty of the Wagner Free Institute, and President of 

 the Academy of Natural Sciences, Philadelphia. 

 Lesley, J. P., A.M., LL.D. Geology. 



State Geologist of Pennsylvania. 

 907 W-almit street^ Philadelphia, Penn. 

 Marsh, O. C, Ph.D., LL.D. Palaeontology. 



Professor of Palaeontology, Yale University. 

 8 Peabody Museutn., New Haven., Conn. 



