NEW YOf^i^ 

 BOTANICAL GARDEN 



1892.] WILLIAMS HINGED BRACHIOPODA. II3. 



The President now introduced Professor W. R. Dudley of 

 Cornell University, who gave the second lecture of the Popular Lec- 

 ture Course on 



THE GEOGRAPHICAL DISTRIBUTION OF THE 

 APPALACHIAN FLORA. 



The lecture was illustrated by lantern views. 



March 14, 1892. 

 business meeting. 



The President, Professor H. L. Fairchild in the chair. 



Thirty persons present. 



The Council report recommended : 



(i.) The election of Mr. Howard L. Osgood as an active 

 member. 



(2.) The payment of certain bills. 



The candidate was elected by formal ballot and the bills were- 

 ordered paid. 



Professor Arthur L. Baker read a paper entitled : 

 NON-EUCLIDEAN GEOMETRY. 



The paper was illustrated by black-board diagrams and demon- 

 strations. 



The discussion was participated in by Professor Arey, M r.. 

 J. E. Putnam, the President and others. 



In the absence of the author. Professor A. L. Arey read the- 

 following paper : 



ON THE BRACHIAL APPARATUS OF HINGED BRACH- 

 IOPODA AND ON THEIR PHYLOGENY. 



By H. S. Williams. 



A serious difficulty met with in attempting to make a natura.. 

 classification of Brachiopoda, has arisen from the uncertainty or 



8, Proc. Roch. Acad, of Sc, Vol. 2, Jan. 1893. 



