TRIANGL E. PART I. IN FIVE SERIES OF NUMBERS. BY THE INVESTIGATOR. NEW-YORK: PRINTED AND PUBLISHED FOR THE AUTHOR. Van Winkle, Wiley, & Co., Printers. ......: 1817. 988 State of Nero-York, ss : TE IT REMEMBERED, that on the seventeenth day of May, in the forty-first year D of tbe Independence of the United States of America, VAN WINKLE & WILEY. of the said district, have deposited in this office the title of a book, the right whereof they claim as proprietory, in the words following, to wit: “ The Triangle. Part I. In Five Series of Numbers. By The Investigator." IN CONFORMITY to the act of Congress of the United States, entitled, “ An act for the " encouragement of learoing, by securing the copies of maps, charts, aod books, to the "authors apd proprietors of such copies, during the times therein mentioned:” and also to an act, entitled, “ Ap act, supplementary to an act, entitled, an act for the encourage* ment of learning, by securing the copies of maps, cbarts, 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 otber "prints." THERON RUDD, Clerk of the Southern District of New-York. |