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36  SCIENTIFIC  HOOKS  PUBLISIIED  BY

Clark’s  Theoretical  Navigation.
8vo.  Cloth.  $3.00.
THEOEETICAL  NAVIGATION.  AND  NAUTICAL  ASTEON-OMY.
  By  Lewis  Clark,  Lieut.-Commander,  TJ.  8.  Navy.  IIlustrated
  with  41  Wood-outs,  including  tlie  Vernier.
Prepared  for  Use  at  the  XT.  S.  Naval  Academy.

The  Plane  Table.
Hlustrated.  8vo.  Cloth.  $2.00.
ITS  USES  IN  TOPOGEAPHICAL  SUEVEYING.  From  the
Papers  of  the  IT.  S.  Coast  Survey.
This  work  gives  a  description  of  the  Plane  Table  employed  at  the  IT.  S.
Coast  Survey  Office,  and  the  raanner  of  using  it.

Pook  on  Shipbuilding.
8vo.  Cloth.  $5.00.
METHOD  OE  COMPAEING  THE  LINES  AND  DEAUGHT-ING
  VESSELS  PEOPELLED  BY  SAIL  OE  STEAM,  including ­
  a  Chapter  on  Laying  off  on  the  Mould-Loft  Eloor.  By
Samuel  M.  Pook,  Naval  Constructor.  1  vol.,  8vo.  With  illustrations.
  Cloth.  $5.00.

Brunnow’s  Spherical  Astronomy.
8vo.  Cloth.  $6.50.
SPHEEICAL  ASTEONOMY.  By  F.  Brunnow,  Ph.-  Dr.  Translated
  hy  the  Author  from  the  Seeond  German  edition.