EASTERN DISTRICT OF PENNSYLVANIA, TO WIT: 
BE IT REMEMBERED, That on the third day of December, in the forty-third. year of the 
Independence of the United States of America, A. D, 1818, WILLIAM P. C. BARTON, of the 
and proprietors of such copies, during the times therein mentioned.”—And also to the act, enti- 
tled, “ 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, 
D. CALDWELL, Clerk of the Eastern District of Pennsylvanian 
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