EASTERN DISTRICT OF PENNSYLVANIA, TO WIT: 

 BE IT REMEMBERED, That on the first day of July, in the forty-sixth year of the Inde- 

 pendence of the United States of America, A. D. 1821, WILLIAM P. C. BARTON, of the said Dis- 

 trict, hath deposited in this office the title of a Book, the right whereof he claims as Author in the 

 words following, to wit : ,,A Flora of North America. Illustrated by coloured figures, drawn from 

 Nature. By William P. C. Barton, M. D. U. S. N. Professor of Botany in- the University of Pennsyl- 

 vania. Volume 1." In conformity to the Act of the Congress of the United States, intituled, " An Act 

 for the Encouragement of Learning, by securing the copies of Maps, Charts, and Books, to the Authors 

 and Proprietors of such copies during the times therein mentioned," — 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 and Proprietors of such copies during the times 

 therein mentioned,' and extending the benefits thereof to the Arts of designing, engraving, and etching 

 historical and other Prints." 



D. CALDWELL, Clerk of the Eastern District of Pennsylvania 



