Marine \Ma*rine"\, a. [L. marinus, fr. mare the sea: cf. F.
   marin. See Mere a pool.]
   1. Of or pertaining to the sea; having to do with the ocean,
      or with navigation or naval affairs; nautical; as, marine
      productions or bodies; marine shells; a marine engine.
      [1913 Webster]

   2. (Geol.) Formed by the action of the currents or waves of
      the sea; as, marine deposits.
      [1913 Webster]

   Marine acid (Chem.), hydrochloric acid. [Obs.]

   Marine barometer. See under Barometer.

   Marine corps, a corps formed of the officers,
      noncommissioned officers, privates, and musicants of
      marines.

   Marine engine (Mech.), a steam engine for propelling a
      vessel.

   Marine glue. See under Glue.

   Marine insurance, insurance against the perils of the sea,
      including also risks of fire, piracy, and barratry.

   Marine interest, interest at any rate agreed on for money
      lent upon respondentia and bottomry bonds.

   Marine law. See under Law.

   Marine league, three geographical miles.

   Marine metal, an alloy of lead, antimony, and mercury, made
      for sheathing ships. --Mc Elrath.

   Marine soap, cocoanut oil soap; -- so called because, being
      quite soluble in salt water, it is much used on shipboard.
      

   Marine store, a store where old canvas, ropes, etc., are
      bought and sold; a junk shop. [Eng.]
      [1913 Webster]

Barometer \Ba*rom"e*ter\, n. [Gr. ba`ros weight + -meter: cf. F.
   barom[`e]tre.]
   An instrument for determining the weight or pressure of the
   atmosphere, and hence for judging of the probable changes of
   weather, or for ascertaining the height of any ascent.
   [1913 Webster]

   Note: The barometer was invented by Torricelli at Florence
         about 1643. It is made in its simplest form by filling
         a graduated glass tube about 34 inches long with
         mercury and inverting it in a cup containing mercury.
         The column of mercury in the tube descends until
         balanced by the weight of the atmosphere, and its rise
         or fall under varying conditions is a measure of the
         change in the atmospheric pressure. At the sea level
         its ordinary height is about 30 inches (760
         millimeters). See Sympiesometer. --Nichol.
         [1913 Webster]

   Aneroid barometer. See Aneroid barometer, under
      Aneroid.

   Marine barometer, a barometer with tube contracted at
      bottom to prevent rapid oscillations of the mercury, and
      suspended in gimbals from an arm or support on shipboard.
      

   Mountain barometer, a portable mercurial barometer with
      tripod support, and long scale, for measuring heights.

   Siphon barometer, a barometer having a tube bent like a
      hook with the longer leg closed at the top. The height of
      the mercury in the longer leg shows the pressure of the
      atmosphere.

   Wheel barometer, a barometer with recurved tube, and a
      float, from which a cord passes over a pulley and moves an
      index.
      [1913 Webster] Barometric