District of Pennsylvania, to wit: 



****** BE IT REMENtBERED, That on the third day oi" 

 ^SEAL.^ April, in the forty-second year of the Independence 

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

 mas Nuttall, of the said district, iiath deposited j.in this office 

 the title of a book, the right whereof he claims 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 Philosophical So- 

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

 ladelpiiia, &c." 

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

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

 ing tlie copies of maps, cliaris and books, to the authors and 

 pr()prielors oi such copies during the times therein mention- 

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

 an fict, entitled " an act for the encouragement of iearning, by 

 securing the copie-s of maps, charts, and hooks, tc; the authors 

 and proprietors of such copies during the times therein men- 

 tioned,'* and extending the bcnchts thereof to the arts of de- 

 signing, engraving, and etching historical and other prints." 



D. CALDWELL, 

 Clerk of the District of Pennsylvania, 



