70 PIONEERS OF SCIENCE IN AMERICA. 



graphic Society of Gottingen, 1802; the Physical Society of 

 Gottingen, 1802; the Linnsean Society of Philadelphia, 1809; 

 the Academy of Natural Sciences of Philadelphia, 1814; the 

 Society for the Promotion of the Useful Arts, Albany, N. Y., 

 1815 ; the Physiographical Society of Lund, Sweden, 1815 ; 

 and the New York Historical Society, April 12, 1815. 



Introducing the description of a Muhlenbergia in the second 

 volume of his work on the Grasses, Prof. Schreber referred to 

 Dr. Muhlenberg as having, " through the discovery of numer- 

 ous new species and in other ways, rendered immortal service 

 to the natural history of North America, and especially to the 

 knowledge of the plants of Pennsylvania and the other United 

 States." 



