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DISTRICT OF PENNSYLVANIA SS. 

 BE it remembered, that on the twenty-seventh day of September, in the thirty- 

 first year of the Independence of the United-States of America, John Conrad, 

 of the said district, hath deposited in this office the title of a book, the right 

 whereof he claims as proprietor, in the words following, to wit: " The Philadel- 

 phia Medical and Physical Journal. Collected and arranged by Benjamin Smith 

 Barton, M. D., Professor of Materia Medica, Natural History, and Botany, in 

 the University of Pennsylvania. Vol. 11. Part II., 1806," in conformity to an act 

 of congress of the United-States, entitled, " An act for the encouragement of 

 learning, by securing the copies of maps, charts, and books to the au'hors and 

 proprietors of such copies, during the times therein mentioned,' and also to an 

 act, entitled, " An act supplementary to an act, entitled, ' An act for the encou- 

 ragement of learning, by securing the copies of maps, charts, and books to the 

 authors and proprietors of such copies, during the 'imes therein mentioned,' and 

 extending the benefits thereof to the arts of designing, engraving, and etching 

 historical and other prints." 



(L. S.) D. CALDWELL, 



Clvi of the District of Pemisylvania- 



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