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Extracted mostly from similar works of Ludlam, Playfair,
Vince, and Bonnycastle.
and of the American Philosophical Society.
District of Pennsylvania, to wit:
BE IT REMEMBERED, That on the twenty-ninth day of SEAL, July, in the thirty-sixth year of the independence of the United
*** States of America, A. D. 1811, Francis Nichols, 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: “ A Treatise of Plane and Spherical Trigonometry, in Theory and Prac.
“ tice. Adapted to the use of Students. Extracted mostly from similar “ works of Ludlam, Playfair, Vince, and Bonnycastle. By F. Nichols, “ Member of the Literary and Philosophical Society of Manchester,
" and of the American Philosophical Society.” 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 supple. mentary to an act, entitled “ An act for the encouragement of learning, by securing the copies of maps, charts, and books, to the authors and proprie. tors 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.”