Lawn mower having flow control baffles and removable mulching baffles

1. A multiblade lawn mower, comprising:

• a mower deck comprising a top wall, a front wall, a back wall, and first and second side walls defining a downwardly directed opening;
  
  each of said front wall, said back wall, and said opposite side walls having interior and exterior surfaces;
  
  said first side wall having a discharge opening formed therein;
  
  said discharge opening having rearward and forward ends;
  
  means operatively connected to said mower deck for moving said mower deck along the ground;
  
  first and second cutting blades having blade tips rotatably disposed within said mower deck;
  
  power means operatively connected to said cutting blades for causing the rotation of each of said cutting blades whereby the blade tip path of each of said cutting blades defines a circle;
  
  a first flow control baffle positioned in said mower deck which extends downwardly from the interior surface of said top wall between said cutting blades and said front wall;
  
  said first flow control baffle extending substantially continuously from a first location adjacent the interior surface of said second side wall to a second location adjacent the interior surface of said first side wall and adjacent the forward end of said discharge opening;
  
  said first flow control baffle comprising a first arcuate baffle portion, having first and second ends, which extends from the interior surface of said second side wall partially around said first cutting blade, a first elongated and substantially straight baffle portion, having first and second ends, extending from said second end of said first arcuate baffle portion, a second arcuate baffle portion, having first and second ends, which extends from said second end of said first elongated and substantially straight baffle portion partially around said second cutting blade;
  
  said first elongated and substantially straight baffle portion being angularly disposed with respect to the said circle defined by the blade tip path of said second cutting blade in a chord-like fashion so that the cuttings from said first cutting blade will be deflected inwardly within the said circle defined by the blade tip path of said second cutting blade;
  
  a second flow control baffle positioned in said mower deck which extends downwardly from the interior surface of said top wall rearwardly of said cutting blades; and
  
  said second flow control baffle including a plurality of semi-circular baffle portions, each of said baffle portions being positioned adjacent the blade tip path of one of said cutting blades;
  
  said first and second flow control baffles defining a plurality of open throat portions which are positioned between adjacent cutting blades.