^

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  mathematical
  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,  Harbor
  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.  Correotions
  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  woodcut
  illustrations.  (i