J). VAN NOSTRANV. 35 



Jeffers' Nautical Surveying. 



Illustrated with 9 Copperplates and 31 Wood-cut Illustrations. 8vo. 

 Cloth. $5.00. 



NAUTICAL SURVEYING. By WILLIAM' N. JEFFEES, Captain 



U. S. Navy. 



Many books hare been written on each of the subjects treated of in the 

 sixteen chapters of this work; and, to obtain a complete knowledge of 

 geodetic surveying requires a profound study of the whole range of mathe- 

 inatical and physical sciences ; but a year of preparation should render any 

 intelligent officer competent to conduct a nautical survey. 



CONTENTS. Chapter I. Formulae and Constants Useful in Surveying 

 II. Distinctive Character of Surveys. III. Hydrographic Surveying under 

 Sail ; or, Running Survey. IV. Hydrographic Surveying of Boats ; or, Har- 

 bor Survey. V. Tides Definition of Tidal Phenomena Tidal Observations. 

 VI. Measurement of Bases Appropriate and Direct. VII. Measurement of 

 the Angles of Triangles Azimuths Astronomical Bearings. VIII. Correc- 

 tions to be Applied to the Observed Angles. IX. Levelling Difference of 

 Level. X. Computation of the Sides of the Triangulation The Three-point 

 Problem. XI. Determination of the Geodetic Latitudes, Longitudes, and 

 Azimuths, of Points of a Triangulation. XII. Summary of Subjects treated 

 of in preceding Chapters Examples of Computation by various Formulae. 

 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. Specimen Page 

 of Field Book. III. Running Survey of c Coast. IV. Example of a Running 

 Survey from Belcher. 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. 



Fifth Edition. 



12mo. Cloth. $3.50. 



NAVIGATION AND NAUTICAL ASTRONOMY. Prepared 

 for the use of the U. S. Naval Academy. By J. H. C. COFFIN, 

 Prof, of Astronomy, Navigation and Surveying, with 52 wood- 

 cut illustrations. 



