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BY D. P. ADAMS,
TEACHER OF THE MATHEMATICS

NEW-YORK:

PUBLISHED BY EVERT DUYCKINCK,

xo. 110 PEARL-STREET.

George Long, printer.

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District of New York, ss.

BE IT REMEMBERED, that on the twenty-eighth day of March, in the thirty-fifth year of the Independence of the United States of America, Evert Duyckinck, 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 :

“ The Theory and Practice of Surveying ; containing all the lastructions requisite for the skilful practice of this Art. By Robert Gibson. Illustrated by Copper-Plates. The whole corrected, newly arranged, and greatly enlarged, with useful Selections, and a new set of accurate Mathematical Tables. By D. P. Adams, Teacher of the Mathematics."

In conformity to the act of the Congress of the United States, en. titled “ An act for the encouragement of learning, by securing the copies of maps, charts, and books to the authors and propietors of such copies, during the times therein mentioned.” And also to an 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 CLINTON, Clerk of the District of New-York

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Sect. 1. Decimal Fractions 2 Sect. 9. Levelling

284 2. Involution and Evolu.

Promiscuous Ques-
tion
15
tions

296
3. Of Logarithms 23
4. Elements of Geome.

PART III.

37
Mathematical Instru- Sect. 1. Introductory Princi-
ments
74
ples

298 5. Trigonometry

99

2. Description of Instru-
tments

305 PART II.

3. To find the Latitude

by the Meridian AlSect. 1. The Chain

134

titude of the Sun 316 The Circumferentor 152 4. Variation of the Com. The Theodolite 159

pass

318
The Semicircle 164
Mensuration of An-

LIST OF TABLES.
gles by these In-
struments

169 Logarithms of Numbers 1

171 Sines, Tangents and Secante 20 2. Mensuration of Natural Sines

71 heighits 179 Points of the Compass

82 Of Distances 194 Traverse Table

83 3. Mensuration of Areas 200 General Method 232 Mean Refraction

174 Pennsylvania Method 246 Sun's Parallax 4. Of off-sets

250 Dip of the Horizon

Dip for Dif. Dist of land by Intersections 257 Semi-diameter of the Sun

ibid 6. Changing the scale Transit of Pole Star

176 263 Difference of Altitude of 7. Method of Dividing

Pole Star and Pole 177 Land 271 Sun's Declination

178 8. Maritime Surveying 281 Reduction Table

182

The Protractor,

175

3. Method of surveying

of Maps

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