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THE THEORY AND PRACTICE:
TO WHICH IS PREFIXED
A PERSPICUOUS SYSTEM
CLEARLY DEMONSTRATED AND ILLUSTRATED
A LARGE NUMBER OF APPROPRIATE EXAMPLES.
PARTICULARLY ADAPTED TO THE USE OF SCHOOLS,
BY JOHN GUMMERE.
SECOND EDITION, IMPROVED.
Griggs & Co. Printers.
DISTRICT OF PENNSYLVANIA, TO WIT:
BE IT REMEMBERED, that on the twenty-first day of November, in the forty first year of the independence of the United States of America, A. D. 1817, John Richardson of the said district, bave deposited in this office the Title of a book, the right whereof he claims as Proprietor, in the words following, to wit: “A Treatise on Surveying, containing the Theory and Practice; to which is
“prefixed, a perspicuous System of Plane Trigonometry. The whole clearly “ demonstrated, and illustrated by a large number of appropriate Examples. “ Particularly adapt d to the use of Schools. By John Gummere. Second
“ edition, improved.” 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 supplementary to an act, entitled “An act for the encouragement of learning by securing the copies 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."
Clerk of the District of Pennsylvania.
I am much pleased with the Treatise on Surveying, compiled by John Gummere, and hope to see it speedily introduced into general use. With those who appreciate its merits, I apprehend it will supercede every other tract on the subject with which I am acquainted.
We have no hesitation in giving it as our judgment, that Gummere's Treatise on Surveying, is the best publication on the subject with which we are ac. quainted ; and we, accordingly, take great pleasure in recommending it to the public patronage.
R. M. PATTERSON, M. D.
The new 'Treatise on Surveying by John Gummere, recently published by Kimber & Richardson, of Philadelphia, is in our estimation a very judicious performance.
Several things are omitted which only serve to encumber other works on this subject, and a variety of new rules and illustrations are introduced, particularly under the heads of laying out, measuring, and dividing land, which, in connection with its general arrangement, render this Treatise on Surveying, in our opinion, decidedly preferable to any other which has met the public eye.
ROBERT ADRAIN, Prof. of Math. & Nat. Phil. Columbia College, New'York.
JOHN GRISCOM, Teacher of Math. Prof. of Chem. Colum. Col. New York.
Having carefully examined a Treatise on Suyveying, by John Gummere, I feel myself perfecily justifiable in pronouncing it to be the best practical work on the subject extant.
DAVID M'CLURE, Principal of the Nani. and Matl. Acad. Philadelphia.