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Edue T 168,35,395

DISTRICT OF CONNECTICUT, ss.

BE IT REMEMBERED, That on the second day of August, in L. S. the fifty-fifth year of the Independence of the United States of

America, Oliver D. Cooke, 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 system of Geometry and Trigonometry, with a treatise on Surveying; comprising various methods of taking the survey of a field, with directions for protracting and finding areas; in which, also, the principles of Rectangular Surveying, by which

Areas may be accurately calculated without plotting, are fully explained: with a complete series of Mathematical Tables, and the necessary explanations. By Abel Flint, A. M. With improvements by George Gillet, Surveyor General of Connecticut. Sixth edition, revised and enlarged, by the addition of copious notes and illustrations, and a concise Treatise on Logarithms, by Frederic A. P. Barnard A. B. Instructor in Mathematics, in the Hartford Grammar School, and Author of a Treatise on Arithmetic." In conformity to the 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 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."

CHARLES A, INGERSOLL,

Clerk of the istrict of Connecticut. A true copy of record, examined and sealed by me,

CHARLES A. INGÉRSÓLL,

Clerk of the District of Connecticut.

Entered according to act of Congress, in the year 1835, by EDWARD P

ADVERTISEMENT

1

TO THE EIGHTH EDITION,

The original compiler of the following work designed, in preparing it, to furnish a plain and concise system of PracTICAL SURVEYING.

That he did not fail of success, has been proved, by the high estimation in which this treatise has been, and is, at the present time, held by Surveyors, and by the continued and increasing demand for it.

In the present edition, practical matter has been added by GEORGE GILLET, Esq., Surveyor General of the state of Connecticut, and in addition to all the tables of the best treatises extant, it contains the only table of Natural Tangents ever published in this country.

In the table of logarithms, and of logarithmic sines, &c., the decimals are carried to six figures, and a column of differences is added for the purpose of finding intermediate numbers. The use of these tables is so familiarly explained and illustrated by examples, that no other instruction upon this subject is necessary.

The articles on distributing estates, locating and surveying roads, and on levelling, cannot fail of being highly useful to the practical surveyor.

The work being now used extensively in schools and academies, it has been the chief object of the publishers to render it acceptable as a text book.

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