Ixxx PROCEEDINGS OF THE CENTENARY MEETING 





K. k. Geologische Reichsanstalt, Wien. 



Die kaiserliche konigliche Geologische Reichsanstalt begrusst auf das herz- 

 lichste die Academy of Natural Sciences of Philadelphia zur Feier ihres hundert- 

 jahrigen Bestandes und begluckwunscht dieselbe zu der Summe von Arbeit, 

 welche wahrend dieses Zeitraumes geleistet worden ist, in der Hoffnung, dass 

 die Bestrebungen der Akademie in weiterer Zukunft von gleichem Erfolge be- 

 gleitet sein werden. 



Wien, im Marz 1912. 



Beautifully engrossed on artistically decorated folio sheet 



Der Direktor, 

 Dr. Emil Tietze 



Geologists' Association of London. 



University College, London. 

 The Geologists' Association of London which has recently celebrated its 50th 

 Anniversary sends its cordial Greetings to The Academy of Natural Sciences of 

 Philadelphia on the completion of a hundred years of its successful existence 

 during the course of which its publications have made known to the world 

 numerous and important contributions to every branch of Natural History 

 including Palaeontology in which, as is natural, this Association feels most 

 keenly its indebtedness to the good work which the Academy has done. 



9th March, 1912. 

 Engrossed on parchment 



John W. Evans, 



President. 



