xii MINUTES. [April 19. 



(Introduced by Dr. Alexander C. Abbott.) Discussed by 

 Doctors Keen and Bogert. 



" Protein Poison : Its Preparation and Its Nature," by Victor 

 C. Vaughan, M.D., LL.D., Professor of Hygiene and Physio- 

 logical Chemistry, University of Michigan. 



" Bacterial Vaccines, with Special Reference to Typhoid 

 Prophylaxis," by Frederick F. Russell, M.D., Major, U. S. 

 A., Curator of Army Medical Museum, Washington, D. C. 

 (Introduced by Dr. Alexander C. Abbott.) Discussed by 

 Doctors Abbott, Bogert and Vaughan. 



" Prolonged Active Life," by Alexis Carrell, M.D., of The 

 Rockefeller Institute, New York. Discussed by Dr. Keen. 



" Dynamical Theory of the Globular Clusters and of the Cluster- 

 ing Power Inferred by Herschel from the Observed Figures 

 of Sidereal Systems of High Order," by T. J. J. See, Ph.D., 

 of the U. S. Naval Observatory, Mare Island, California. 



" Some Notes on Persian Mystic Poetry," by A. V. Williams 

 Jackson, Ph.D., LL.D., Professor of Indo-Iranian Languages, 

 Columbia University, New York. 



Afternoon Session — 2 o'clock. 

 William B. Scott, Ph.D., LL.D., Vice-President, in the Chair. 



Exhibition of Volumes of Illustrations of North American 

 Vegetation, by John W. Harshberger, Ph.D., Professor of 

 Botany, University of Pennsylvania. Discussed by Pro- 

 fessor Haupt. 



" History of the Fungus of the Chestnut Tree Disease," by 

 William G. Farlow, Ph.D., LL.D., Professor of Cryptogamic 

 Botany, Harvard University. 



"The Classification of the Black Oaks" (illustrated), by Wil- 

 liam Trelease, Sc.D., LL.D., Director of Missouri Botanical 

 Garden, St. Louis. 



"The Mammals of the Patagonian Miocene" (illustrated), by 

 William B. Scott, Ph.D., LL.D., Professor of Geology and 

 Paleontology, Princeton University. 



