District of Pennsylvania, to wit: 



****** BE IT REMEMBERED, That on the third ^ay of 

 ^SEAL.^ A])ri!, in the forty-second year of the Independence 

 ****** of the United States of America, A. D. 1818, Tho- 

 mas Nuttall, of the said district, hath deposited Jn this office 

 the title of a book, the rii^ht whereof he chiinns as author, in 

 the words following-, to wit: 



"The Genera of North American Plants, and a Catalogue 

 of the Species to the year 1817. By Thomas Nut- 

 tall, F. L. S. fellow of the American pliilosophical So- 

 ciety, and of the Academy of Natural Sciences of Phi- 

 ladelphia, &c." 

 In conformity to the act of the congress of the United States, 

 jntitled, "an act for the encouragement of learning, by secur- 

 ing the copies of maps, charts and books, to the authors and 

 proprietors of such copies during the times therein mention- 

 ed." — And also to the act, entitled, " an act supplementary to 

 an act, entitled *' an act for the encouragement of learning, by 

 securing the copies of maps, charts, and books, to the authors 

 nnd proprietors of such copies during the times therein men- 

 tioned," and extending the benefits thereof to the arts of de- 

 signing, engravi!igj and etching historical and other prints." 



I). CALDWELL, 

 Cisrk of the jyiiiHct of Peimsyhanto.- 



