cxxxii PROCEEDINGS OF THE CENTENARY MEETING. 



The Wistar Institute of Anatomy and Biology, Philadelphia. 



To the Academy of Natural Sciences of Philadelphia: 



The Wistar Institute of Anatomy and Biology extends its felicitations and 

 congratulations to The Academy of Natural Sciences of Philadelphia and, owing 

 to the close affiliation which exists between the two institutions, joins with 

 special satisfaction in the celebration of the Centenary Anniversary. 



On this occasion, The Wistar Institute delegates its Director as the Repre- 

 sentative to take part in these festivities. 



Edgar F. Smith, 



President 

 Milton J. Greenman, 

 Secretary. 

 March 19, 1912. 



K. K. Zoologisch-Botanische Gesellschaft, Wien. 



111/3, Mechelgasse Nr. 2. 

 To The Academy of Natural Sciences of Philadelphia: 



The K. K. Zoologisch-Botanische Gesellschaft sends by the present her cordial 

 congratulations for the honourable commemoration to the Academy of Natural 

 Sciences of Philadelphia. 



On this occasion she thinks thankfully on the great merits which the Academy 

 has acquired for the advancement of the science in general and the organization 

 of scientifical works in North America and joins in the sincere wishes for the 

 future and begs of continuation of the cordial relations. 

 Vienna, the 8th March, 1912. 

 Das Prasidium der K. K. Zoologisch-Botanischen Gesellschaft. 



Prof. Dr. R. v. Wettstein, 



Praesident. 

 Dr. Franz Ostermeyer 



Vice Praesident. 



