^
J). VAN NOSTRAND. 35 j
Jeffers’ Nautical Surveying.
Illus trated with 9 Copperplatcs and 31 Wood-cut Illustrations. 8vo.
Cloth. $5.00.
NAUTICAL SUEVEYING. By William N. Jeffers, Captam
U. S. Navy.
Many books have been written on each of the subjects treated of in the
sixteen chapters'of this work; and, to obtain a eomplete knowledge of j
geodetic surveying requires a profonnd study of the whole ränge of mathe-
matical and physical Sciences; but a year of preparation should render any
intelligent officer competent to conduct a nautical survey.
Contents.—Chapter I. Formuhe and Constants Useful in Surveying
II. Distinctive Character of Snrvcys. III. Hydrographie Surveying under
Sail; or, Running Survey. IV. Hydrographie Surveying of Boats; or, Har-
bor Survey. V. Tides—Definition of Tidal Phenomena—Tidal Observations.
VI. Measurement of Bases—Appropriate and Direct. V II. Measurement of
the Angles of Triangles—Azimuths—Astronomical Bearings. VIII. Correo-
tions to be Applied to the Observed Angles. IX. Levelling-Difference of
Level. X. Computation of the Sides of the Triangulation—The Three-pomt
Problem. XI. Determination of the Geodetic Latitudes, Longitudes, and
Azimuths, of Points of a Triangulation. XII. Summary of Subjects treated j
of in preceding Chapters—Examples of Computation by various Forinuke. !
XIII. Projection of Charts and Plans. XIV. Astronomical Determination of
Latitude and Longitude. XV. Magnetic Observations. XVI. Deep Sea
Soundings. XVII. Tables for Ascertaining Distances at Sea, and a full
Index.
List of Plates.
Plate I. Diagram Illustrative of the Triangulation. II. Speoimen Page
of Field Book. III. Running Survey of r Coast. IV. Example of a Running
Survey from Beicher. V. Flying Survey of an Island. VI. Survey of a
Shoal. VII. Boat Survey of a River. VIII. Three-Point Problem. IX.
Triangulation.
Coffin’s Navigation. .
Flfth Edition.
12mo. Cloth. $3.50.
NAVIGATION AND NAUTICAL ASTEONOMY. Prepared
for tlio uso of tho U. S. Naval Academy. By J. II. C. Cofkin,
Prof, of Astrouomy, Navigation and Surveying, with 52 wood-
cut illustrations. (i
